malignant brain tumor (MBT) repeat; The MBT repeat is a protein module that recognizes methylated lysine residues on histones and are thought to affect a variety of chromatin processes, including transcription. It exists as tandem repeats and is found in a number of nuclear proteins such as Drosophila sex comb on midleg protein. In the human genome, there are at least 9 MBT repeat proteins, each containing two, three or four MBT repeats. MBT repeat proteins use a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine (monomethyllysine and/or dimethyllysine).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  46 HFFTVGMRLETLHINDPFHIYPATVTKVFNSQFFQVAIDDLRAETNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYSG 125
Cdd:cd20116     1 HSFTVGMKLEVVDPREPFHICPASVTKVFNNHYFQVTVDDLRPEASENSMLCHADSLGILPVQWCLKNGVNLTPPKGYSG 80

                          90
                  ....*....|...
gi 1958707892 126 QDFNWVDYHKQRE 138
Cdd:cd20116    81 QDFDWADYQKQCG 93

malignant brain tumor (MBT) repeat; The MBT repeat is a protein module that recognizes methylated lysine residues on histones and are thought to affect a variety of chromatin processes, including transcription. It exists as tandem repeats and is found in a number of nuclear proteins such as Drosophila sex comb on midleg protein. In the human genome, there are at least 9 MBT repeat proteins, each containing two, three or four MBT repeats. MBT repeat proteins use a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine (monomethyllysine and/or dimethyllysine).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTPYKSSSKSKK 233
Cdd:cd20118     1 GFTKNMKLEAVNPRNPAEICVASITSVKGRLLWLHLEGLQNPVPEYIVDVESMDIFPVGWCEANGYPLTPPHKAVCKKKR 80

                  ....*....
gi 1958707892 234 KPITVPPEK 242
Cdd:cd20118    81 KIAVVQPEK 89

three malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 2 (SFMBT2); SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. SFMBT2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  46 HFFTVGMRLETLHINDPFHIYPATVTKVFNSQFFQVAIDDLRAETNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYSG 125
Cdd:cd20116     1 HSFTVGMKLEVVDPREPFHICPASVTKVFNNHYFQVTVDDLRPEASENSMLCHADSLGILPVQWCLKNGVNLTPPKGYSG 80

                          90
                  ....*....|...
gi 1958707892 126 QDFNWVDYHKQRE 138
Cdd:cd20116    81 QDFDWADYQKQCG 93

fourth malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 2 (SFMBT2); SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. SFMBT2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTPYKSSSKSKK 233
Cdd:cd20118     1 GFTKNMKLEAVNPRNPAEICVASITSVKGRLLWLHLEGLQNPVPEYIVDVESMDIFPVGWCEANGYPLTPPHKAVCKKKR 80

                  ....*....
gi 1958707892 234 KPITVPPEK 242
Cdd:cd20118    81 KIAVVQPEK 89

Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2; Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2. These proteins are involved in transcriptional regulation.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  132 DYHKQREAEGAPPYCFKNT---FARGFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPmPEIIVDIDSMDI 208
Cdd:smart00561   2 DYLEETGARAAPVELFKQPvdsPPNGFKVGMKLEAVDPRNPSLICVATVVEVKGYRLLLHFDGWDDK-YDFWCHADSPDI 80

                           90
                   ....*....|....*.
gi 1958707892  209 FPVGWCEANSYPLTTP 224
Cdd:smart00561  81 FPVGWCEKNGHPLQPP 96

Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2; Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2. These proteins are involved in transcriptional regulation.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892   30 CPLPMEVFKDHADLGSHFFTVGMRLETLHINDPFHIYPATVTKVFNsQFFQVAIDDLRAEtngLTMLCHADSLGILPVQW 109
Cdd:smart00561  10 RAAPVELFKQPVDSPPNGFKVGMKLEAVDPRNPSLICVATVVEVKG-YRLLLHFDGWDDK---YDFWCHADSPDIFPVGW 85

                           90
                   ....*....|.
gi 1958707892  110 CLKNGVNLAPP 120
Cdd:smart00561  86 CEKNGHPLQPP 96

SAM / Pointed domain; A subfamily of the SAM domain

                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  554 QSEEEKLILESNPLEWSVTDVVRFI----KLTDCAPLarIFQEQDIDGQALLLLTlptvQECMELKLGPA 619
Cdd:smart00251   5 EKEQKRLGIPADPQLWTEDHVLEWLewavKEFSLSPI--DFSKFDMSGKELCSMS----KEEFLERAPFG 68

three malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 2 (SFMBT2); SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. SFMBT2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  46 HFFTVGMRLETLHINDPFHIYPATVTKVFNSQFFQVAIDDLRAETNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYSG 125
Cdd:cd20116     1 HSFTVGMKLEVVDPREPFHICPASVTKVFNNHYFQVTVDDLRPEASENSMLCHADSLGILPVQWCLKNGVNLTPPKGYSG 80

                          90
                  ....*....|...
gi 1958707892 126 QDFNWVDYHKQRE 138
Cdd:cd20116    81 QDFDWADYQKQCG 93

fourth malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 2 (SFMBT2); SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. SFMBT2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTPYKSSSKSKK 233
Cdd:cd20118     1 GFTKNMKLEAVNPRNPAEICVASITSVKGRLLWLHLEGLQNPVPEYIVDVESMDIFPVGWCEANGYPLTPPHKAVCKKKR 80

                  ....*....
gi 1958707892 234 KPITVPPEK 242
Cdd:cd20118    81 KIAVVQPEK 89

third malignant brain tumor (MBT) repeat found in the Scm-like with four MBT domains protein (SFMBT) family; The SFMBT family includes SFMBT1 and SFMBT2. SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  48 FTVGMRLETLHINDPFHIYPATVTKVFNSQFFQVAIDDLRAETNG-LTMLCHADSLGILPVQWCLKNGVNLAPPKGYSGQ 126
Cdd:cd20095     1 FKVGMKLEALHPKNPSTICPATVTKVFNEYYFLVEIDDLRPEESEkITFVCHANSPGIFPVGWCAKNGLRLTPPPGYPKS 80

                          90
                  ....*....|
gi 1958707892 127 DFNWVDYHKQ 136
Cdd:cd20095    81 EFDWDSYLKL 90

fourth malignant brain tumor (MBT) repeat found in the Scm-like with four MBT domains protein (SFMBT) family; The SFMBT family includes SFMBT1 and SFMBT2. SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 155 FAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20096     1 FERGMKLEAVNPENPNQICVATITKVVGPLLWLHLDSEKKLSPNIIVDVESTDIFPVGWCESNGYPLVTP 70

fourth malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 1 (SFMBT1); SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT1 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTPYKSSSKSKK 233
Cdd:cd20117     2 CFKENMKLEAVNPICPEEICVATVTKVKGSYLWLQLEGSKKPIPECIVHVESMDIFPVGWCETNGYPLLHPRKARVNKQR 81

                  ....*....
gi 1958707892 234 KPITVPPEK 242
Cdd:cd20117    82 KIAVVQPEK 90

mbt repeat; The function of this repeat is unknown, but is found in a number of nuclear proteins such as drosophila sex comb on midleg protein. The repeat is found in up to four copies as in Swiss:Q9UHJ3. The repeat contains a completely conserved glutamate at its amino terminus that may be important for function.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1958707892 159 MKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVEtPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:pfam02820   1 MKLEAVDPLNPSLICVATVVKVLGGRLRLRFDGWD-DSYDFWCHADSPDIHPVGWCEKNGHPLQPP 65

Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2; Present in Drosophila Scm, l(3)mbt, and vertebrate SCML2. These proteins are involved in transcriptional regulation.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892   30 CPLPMEVFKDHADLGSHFFTVGMRLETLHINDPFHIYPATVTKVFNsQFFQVAIDDLRAEtngLTMLCHADSLGILPVQW 109
Cdd:smart00561  10 RAAPVELFKQPVDSPPNGFKVGMKLEAVDPRNPSLICVATVVEVKG-YRLLLHFDGWDDK---YDFWCHADSPDIFPVGW 85

                           90
                   ....*....|.
gi 1958707892  110 CLKNGVNLAPP 120
Cdd:smart00561  86 CEKNGHPLQPP 96

third malignant brain tumor (MBT) repeat found in the Drosophila melanogaster Polycomb protein Sfmbt (dSfmbt)-like family; The dSfmbt-like family includes Drosophila melanogaster Scm-like with four MBT domain-containing protein 1 (dSfmbt), as well as its two vertebrate homologs, MBT domain-containing protein 1 (MBTD1) and Lethal(3)malignant brain tumor-like protein 2 (L3MBTL2). dSfmbt is a Polycomb group (PcG) repressor involved in epigenetic regulation of gene expression. MBTD1 and L3MBTL2, also called L(3)mbt-like protein 2, are putative PcG proteins that specifically bind to monomethylated and dimethylated 'Lys-20' on histone H4. L3MBTL2 also binds histone H3 peptides which are monomethylated or dimethylated on 'Lys-4', 'Lys-9' or 'Lys-27'. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not seem to contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  48 FTVGMRLETLHINDPFHIYPATVTKVFNSQFFQVAIDDLRAETNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYSGQD 127
Cdd:cd20099     1 FKVGMKLEAVDPLNLSSICVATVRKVLRFGYLVIGIDGPSADDGSDWFCCHASSPFIFPVGFAEKNGIELTPPRGYESKP 80

                  ....*.
gi 1958707892 128 FNWVDY 133
Cdd:cd20099    81 FDWEEY 86

second malignant brain tumor (MBT) repeat found in the Lethal(3)malignant brain tumor-like protein 1 (L3MBTL1)-like family; The L3MBTL1-like family includes L3MBTL1, L3MBTL3, and L3MBTL4. L3MBTL1, also called L(3)mbt-like, or L(3)mbt protein homolog, is a Polycomb group (PcG) protein that functions as a 'reader' of a network of post-translational modifications by specifically recognizing and binding mono- and dimethyllysine residues on target proteins. It acts as a chromatin compaction factor by binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condensed chromatin and repressed transcription. L3MBTL3, also called L(3)mbt-like protein 3, or MBT-1, is a PcG protein that recognizes mono- and dimethylated lysine residues on histone tails. It also acts as a methyl-binding protein that binds the K142-methylated DNMT1 and recruits a novel CRL4(DCAF5) ubiquitin ligase to degrade DNMT1. L3MBTL4, also called L(3)mbt-like protein 4, or L3mbt-like 4, is a PcG protein that may act as a tumor suppressor. Members of this family contain three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the second MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1958707892 153 RGFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETpMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20102     2 HGFRVGMKLEAVDRKNPSLICVATVTDVIGNRFLVHFDGWDD-SYDYWCDPDSPYIHPVGWCEENGKTLQPP 72

fourth malignant brain tumor (MBT) repeat found in the Drosophila melanogaster Polycomb protein Sfmbt (dSfmbt)-like family; The dSfmbt-like family includes Drosophila melanogaster Scm-like with four MBT domain-containing protein 1 (dSfmbt), as well as its two vertebrate homologs, MBT domain-containing protein 1 (MBTD1) and Lethal(3)malignant brain tumor-like protein 2 (L3MBTL2). dSfmbt is a Polycomb group (PcG) repressor involved in epigenetic regulation of gene expression. MBTD1 and L3MBTL2, also called L(3)mbt-like protein 2, are putative PcG proteins that specifically bind to monomethylated and dimethylated 'Lys-20' on histone H4. L3MBTL2 also binds histone H3 peptides which are monomethylated or dimethylated on 'Lys-4', 'Lys-9' or 'Lys-27'. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1958707892 153 RGFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIiVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20100     1 HGFKVGMKLEAVDLMEPRLICVATVTRVVGRLLRVHFDGWDDEFDQW-VDCDSPDIYPVGWCELVGYPLQPP 71

third malignant brain tumor (MBT) repeat found in Drosophila melanogaster Polycomb protein Sfmbt (dSfmbt) and similar proteins; dSfmbt, also called Scm-like with four MBT domain-containing protein 1, is a Polycomb group repressor involved in epigenetic regulation of gene expression. dSfmbt contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not seem to contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  48 FTVGMRLETLhinDPF---HIYPATVTKVFNSQFFQVAIDDLRAETNGLTMLC-HADSLGILPVQWCLKNGVNLAPPKGY 123
Cdd:cd20125     1 FKEGMKLEAV---DPLnlsAICVATVMKVLRFGYLMIRIDSYEPDASGSDWFCyHESSPCIFPAGFCEVNNITLTPPNGY 77

                          90       100
                  ....*....|....*....|....
gi 1958707892 124 SGQDFNWVDYHKQREAEGAPPYCF 147
Cdd:cd20125    78 DGRTFTWEGYLRQTGATAAPQHLF 101

third malignant brain tumor (MBT) repeat found in the Lethal(3)malignant brain tumor-like protein 1 (L3MBTL1)-like family; The L3MBTL1-like family includes L3MBTL1, L3MBTL3, and L3MBTL4. L3MBTL1, also called L(3)mbt-like, or L(3)mbt protein homolog, is a Polycomb group (PcG) protein that functions as a 'reader' of a network of post-translational modifications by specifically recognizing and binding mono- and dimethyllysine residues on target proteins. It acts as a chromatin compaction factor by binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condensed chromatin and repressed transcription. L3MBTL3, also called L(3)mbt-like protein 3, or MBT-1, is a PcG protein that recognizes mono- and dimethylated lysine residues on histone tails. It also acts as a methyl-binding protein that binds the K142-methylated DNMT1 and recruits a novel CRL4(DCAF5) ubiquitin ligase to degrade DNMT1. L3MBTL4, also called L(3)mbt-like protein 4, or L3mbt-like 4, is a PcG protein that may act as a tumor suppressor. Members of this family contain three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that contains the semi-aromatic cage that may bind methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1958707892 153 RGFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGvetpMPEII---VDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20103     3 HGFEVGMKLEAVDKRNPRLIRVATVADVEDYRVKLHFDG----WPDIYdfwVDDDSPDIHPPGWCSKTGHPLEPP 73

third malignant brain tumor (MBT) repeat found in the Scm-like with four MBT domains protein (SFMBT) family; The SFMBT family includes SFMBT1 and SFMBT2. SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1958707892 155 FAKNMKLEAVNPKNPGEVCVATVISVRGSLLWL----RLEGVETPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20095     1 FKVGMKLEALHPKNPSTICPATVTKVFNEYYFLveidDLRPEESEKITFVCHANSPGIFPVGWCAKNGLRLTPP 74

first malignant brain tumor (MBT) repeat found in the Scm-like with four MBT domains protein (SFMBT) family; The SFMBT family includes SFMBT1 and SFMBT2. SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. Members of this family contain four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains a partially conserved semi-aromatic cage.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGV-ETPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20093     3 GFKPGMKLEVPNKNNPDTYWVATVVMTCGPLLRLRYVGYeDDRSADFWCDLSSGDVHPIGWCAQNGKPLQPP 74

second malignant brain tumor (MBT) repeat found in the Lethal(3)malignant brain tumor-like protein 1 (L3MBTL1)-like family; The L3MBTL1-like family includes L3MBTL1, L3MBTL3, and L3MBTL4. L3MBTL1, also called L(3)mbt-like, or L(3)mbt protein homolog, is a Polycomb group (PcG) protein that functions as a 'reader' of a network of post-translational modifications by specifically recognizing and binding mono- and dimethyllysine residues on target proteins. It acts as a chromatin compaction factor by binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condensed chromatin and repressed transcription. L3MBTL3, also called L(3)mbt-like protein 3, or MBT-1, is a PcG protein that recognizes mono- and dimethylated lysine residues on histone tails. It also acts as a methyl-binding protein that binds the K142-methylated DNMT1 and recruits a novel CRL4(DCAF5) ubiquitin ligase to degrade DNMT1. L3MBTL4, also called L(3)mbt-like protein 4, or L3mbt-like 4, is a PcG protein that may act as a tumor suppressor. Members of this family contain three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the second MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  45 SHFFTVGMRLETLHINDPFHIYPATVTKVfNSQFFQVAIDdlrAETNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYS 124
Cdd:cd20102     1 PHGFRVGMKLEAVDRKNPSLICVATVTDV-IGNRFLVHFD---GWDDSYDYWCDPDSPYIHPVGWCEENGKTLQPPKGYS 76

                  ....*....
gi 1958707892 125 GQDFNWVDY 133
Cdd:cd20102    77 PGNFSWDKY 85

SAM domain of Atherin/Atherin-like subfamily; SAM (sterile alpha motif) domain of SAM_Atherin and Atherin-like subfamily proteins is a putative protein-protein and/or protein-lipid interaction domain. In addition to the C-terminal SAM domain, the majority of proteins belonging to this group also have PHD (or Zn finger) domain. As potential members of the polycomb group, these proteins may be involved in regulation of some key regulatory genes during development. Atherin can be recruited by Ruk/CIN85 kinase-binding proteins via its SH3 domains thus participating in the signal transferring kinase cascades. Also, atherin was found associated with low density lipids (LDL) in atherosclerotic lesions in human. It was suggested that atherin plays an essential role in atherogenesis via immobilization of LDL in the arterial wall. SAM domains of atherins are predicted to form polymers. Inhibition of polymer formation could be a potential antiatherosclerotic therapy.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1958707892 566 PLEWSVTDVVRFIKLTDCAPLARIFQEQDIDGQALLLLTLPTVQECMELKLGPAIKLCHQIERVKV 631
Cdd:cd09583     1 PSNWSVEDVVQYFKTAGFPEEANAFKEQEIDGKSLLLLTRSDVLTGLSLKLGPALKIYEHVVKLQQ 66

first malignant brain tumor (MBT) repeat found in Lethal(3)malignant brain tumor-like protein 4 (L3MBTL4); L3MBTL4, also called L(3)mbt-like protein 4, or L3mbt-like 4, is a Polycomb group (PcG) protein that may act as a tumor suppressor. L3MBTL4 contains three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  48 FTVGMRLETLhinDPFHIYPATVTKVFNSQFFQvaiddLRAETNGLT----MLCHADSLGILPVQWCLKNGVNLAPPKGY 123
Cdd:cd20133     6 FKVGMRLEGI---DPEHPSLFCVLSVAEVQGYR-----LRLHFDGYSecydFWVNADSPDIHPVGWCEKTGHKLLPPKGY 77

                          90       100
                  ....*....|....*....|....
gi 1958707892 124 SGQDFNWVDYHKQREAEGAPPYCF 147
Cdd:cd20133    78 KDGEFNWSSYLKTCKAQAAPKNLF 101

SAM domain of Samd7,11 subfamily of Polycomb group; SAM (sterile alpha motif) domain is a protein-protein interaction domain. Phylogenetic analysis suggests that proteins of this subfamily are most closely related to SAM-Ph1,2,3 subfamily of Polycomb group. They are predicted transcriptional repressors in photoreceptor cells and pinealocytes of vertebrates. SAM domain containing protein 11 is also known as Mr-s (major retinal SAM) protein. In mouse, it is predominantly expressed in developing retinal photoreceptors and in adult pineal gland. The SAM domain is involved in homooligomerization of whole proteins (it was shown based on immunoprecipitation assay and mutagenesis), however its repression activity is not due to SAM/SAM interactions but to the C-terminal region.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1958707892 567 LEWSVTDVVRFI-KLTDCAPLARIFQEQDIDGQALLLLTLPTVQECMELKLGPAIKLCHQIER 628
Cdd:cd09579     2 RKWTVDDVCSFIgSLPGCAEYAQVFREHSIDGETLPLLTEEHLLNTMGLKLGPALKIRSQVAK 64

SAM domain of Scm-like-4MBT proteins of Polycomb group; SAM (sterile alpha motif) domain of Scm-like-4MBT (Sex comb on midleg like, Malignant Brain Tumor) subfamily proteins of the polycomb group is a putative protein-protein interaction domain. Additionally to the SAM domain, most of the proteins of this subfamily have 4 MBT repeats. In Drosophila SAM-Scm-like-4MBT protein (known as dSfmbt) is a member of Pho repressive complex (PhoRC). Additionally to dSfmbt, the PhoRC complex includes Pho or Pho-like proteins. This complex is responsible for HOX (Homeobox) gene silencing: Pho or Pho-like proteins bind DNA and dSmbt binds methylated histones. dSmbt can interact with mono- and di-methylated histones H3 and H4 (however this activity has been shown for the MBT repeats, while exact function of the SAM domain is unclear). Besides interaction with histones, dSmbt can interact with Scm (a member of PRC complex), but this interaction also seems to be SAM domain independent.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1958707892 566 PLEWSVTDVVRFIKLTDCAPLARIFQEQDIDGQALLLLTLPTVQECMELKLGPAIKLCHQIERVK 630
Cdd:cd09580     1 PSTWGVKDVSQFLRENDCGAYCECFCRQNIDGKRLLSLTKEQIMTLTGMKVGPSLKIYDLIQQLK 65

malignant brain tumor (MBT) repeat; The MBT repeat is a protein module that recognizes methylated lysine residues on histones and are thought to affect a variety of chromatin processes, including transcription. It exists as tandem repeats and is found in a number of nuclear proteins such as Drosophila sex comb on midleg protein. In the human genome, there are at least 9 MBT repeat proteins, each containing two, three or four MBT repeats. MBT repeat proteins use a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine (monomethyllysine and/or dimethyllysine).

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1958707892  48 FTVGMRLETLHINDPFHIYPATVTKVFNsQFFQVAIDDLraETNGLTMLCHADSLGILPVQWC 110
Cdd:cd20088     1 FKVGMKLEAVDPLNPSEICVATVVKVVG-GRLLLHFDGW--DPSRYDFWCDVDSPDIHPVGWC 60

fourth malignant brain tumor (MBT) repeat found in MBT domain-containing protein 1 (MBTD1); MBTD1 is a putative Polycomb group (PcG) protein that specifically binds to monomethylated and dimethylated 'Lys-20' on histone H4. MBTD1 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIiVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20129     2 GFRVGMKLEAVDLMEPRLVCVATVTRIIHRLLRIHFDGWEDEYDQW-VDCESPDLYPVGWCQLTGYQLQPP 71

second malignant brain tumor (MBT) repeat found in Drosophila melanogaster Polycomb protein sex comb on midleg (Scm) and similar proteins; Scm is a putative zinc finger protein that functions as a transcriptional regulator which represses multiple homeotic genes during embryonic stages. It coordinates Polycomb group (PcG) complexes, PRC1 (PcG-repressive complex 1) or PRC2 (PcG-repressive complex 2), and polymerizes to produce broad domains of PcG silencing. Scm contains two MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the second MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMpEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20110     5 LFKVGMKLEAVDRKNPHLICPATVGAVKDDQIFVTFDGWRGAF-DYWCRYDSRDIFPVGWCARSGHPLQPP 74

first malignant brain tumor (MBT) repeat found in Lethal(3)malignant brain tumor-like protein 3 (L3MBTL3); L3MBTL3, also called L(3)mbt-like protein 3, or MBT-1, is a Polycomb group (PcG) protein that recognizes mono- and dimethylated lysine residues on histone tails. It also acts as a methyl-binding protein that binds the K142-methylated DNMT1 and recruits a novel CRL4(DCAF5) ubiquitin ligase to degrade DNMT1. L3MBTL3 contains three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892  48 FTVGMRLETLhinDPFH--IYPA-TVTKVFNSQFfQVAIDDLraeTNGLTMLCHADSLGILPVQWCLKNGVNLAPPKGYS 124
Cdd:cd20132     6 FKVGMKLEGV---DPEHqsMYCVlTVAEVCGYRI-RLHFDGY---SDCYDFWVNADSPDIHPVGWCEKTGHKLHPPKGYK 78

                          90       100
                  ....*....|....*....|...
gi 1958707892 125 GQDFNWVDYHKQREAEGAPPYCF 147
Cdd:cd20132    79 EEEFNWQSYLKTCKAQAAPKSLF 101

first malignant brain tumor (MBT) repeat found in Lethal(3)malignant brain tumor-like protein 4 (L3MBTL4); L3MBTL4, also called L(3)mbt-like protein 4, or L3mbt-like 4, is a Polycomb group (PcG) protein that may act as a tumor suppressor. L3MBTL4 contains three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGvetpMPEII---VDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20133     5 GFKVGMRLEGIDPEHPSLFCVLSVAEVQGYRLRLHFDG----YSECYdfwVNADSPDIHPVGWCEKTGHKLLPP 74

fourth malignant brain tumor (MBT) repeat found in Lethal(3)malignant brain tumor-like protein 2 (L3MBTL2); L3MBTL2, also called L(3)mbt-like protein 2, is a putative Polycomb group (PcG) protein that binds to monomethylated and dimethylated 'Lys-20' on histone H4 and also binds histone H3 peptides which are monomethylated or dimethylated on 'Lys-4', 'Lys-9' or 'Lys-27'. L3MBTL2 orchestrates ubiquitin signalling by dictating the sequential recruitment of RNF8 and RNF168 after DNA damage. It is an integral component of the polycomb repressive complex 1.6 (PRC1.6) and has been implicated in transcriptional repression and chromatin compaction. L3MBTL2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the fourth MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVETPMPEIiVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20130     5 GFKVGMKLEAVDLMEPRLICVATVKRVVHRLLSIHFDGWDSEYDQW-VDCESPDIYPVGWCELTGYQLQPP 74

first malignant brain tumor (MBT) repeat found in Lethal(3)malignant brain tumor-like protein 3 (L3MBTL3); L3MBTL3, also called L(3)mbt-like protein 3, or MBT-1, is a Polycomb group (PcG) protein that recognizes mono- and dimethylated lysine residues on histone tails. It also acts as a methyl-binding protein that binds the K142-methylated DNMT1 and recruits a novel CRL4(DCAF5) ubiquitin ligase to degrade DNMT1. L3MBTL3 contains three MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains the semi-aromatic cage that binds methylated lysine residues.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGVeTPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20132     5 GFKVGMKLEGVDPEHQSMYCVLTVAEVCGYRIRLHFDGY-SDCYDFWVNADSPDIHPVGWCEKTGHKLHPP 74

first malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 1 (SFMBT1); SFMBT1, also called renal ubiquitous protein 1, is a transcriptional repressor protein that selectively binds the N-terminal tail of histone H3 and functions as a chromatin reader in regulating epigenetic silencing and the myogenic gene program. It mediates the recruitment of corepressor complexes to target genes, followed by chromatin compaction and repression of transcription. SFMBT1 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains a partially conserved semi-aromatic cage.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1958707892 154 GFAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGV-ETPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20111     3 GFSPGMKLEVAVRTDPNTYWVATIITTCGQLLLLRYDGYgEDRRADFWCDIMTADLHPIGWCEQNGKTLRPP 74

third malignant brain tumor (MBT) repeat found in MBT domain-containing protein 1 (MBTD1); MBTD1 is a putative Polycomb group (PcG) protein that specifically binds to monomethylated and dimethylated 'Lys-20' on histone H4. MBTD1 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the third MBT repeat that does not seem to contain a semi-aromatic cage and may not bind methylated lysine residues.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958707892 155 FAKNMKLEAVNPKNPGEVCVATVISV-RGSLLWLRLEGVETPmpeiivdiDSMD----------IFPVGWCEANSYPLTT 223
Cdd:cd20126     1 FKEGMKLEAIDPLNLSTICVATVRKVlANGYLMIGIDGSEAA--------DGSDwfcyhatspsIFPVGFCEINMIELTP 72

                  .
gi 1958707892 224 P 224
Cdd:cd20126    73 P 73

first malignant brain tumor (MBT) repeat found in Scm-like with four MBT domains protein 2 (SFMBT2); SFMBT2, also called Scm-like with 4 MBT domains protein 2, is a transcriptional repressor of the HOXB13 gene. It is required for trophoblast maintenance and placenta development. It also negatively regulates cell migration and invasion in prostate cancer cells. SFMBT2 contains four MBT (malignant brain tumor) repeats. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the first MBT repeat that contains a partially conserved semi-aromatic cage.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958707892 155 FAKNMKLEAVNPKNPGEVCVATVISVRGSLLWLRLEGV-ETPMPEIIVDIDSMDIFPVGWCEANSYPLTTP 224
Cdd:cd20112     4 FQPGMKLEVANKSNPDTYWVATIITTCGQLLLLRYCGYgDDRRADFWCDVMTADLHPVGWCTQNNKVLMPP 74