O-6-alkylguanine-DNA alkyltransferase, isoform B [Drosophila melanogaster]
methylated-DNA--[protein]-cysteine S-methyltransferase; MGMT family protein( domain architecture ID 12776258)
methylated-DNA--[protein]-cysteine S-methyltransferase is involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) and O4-methylthymine (O4-MeT) in DNA; it repairs the methylated nucleobase in DNA by stoichiometrically transferring the methyl group to a cysteine residue in the enzyme| MGMT (O-6-methylguanine DNA methyltransferase) family protein similar to Vibrio parahaemolyticus DNA base-flipping protein, which binds to the damaged base O(6)-methylguanine and flips the base out of the DNA duplex into an extrahelical conformation to allow processing by repair proteins
List of domain hits
Name | Accession | Description | Interval | E-value | ||||
ATase super family | cl29527 | The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT ... |
111-189 | 1.91e-33 | ||||
The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT and MGMT) reverses O6-alkylation DNA damage by transferring O6-alkyl adducts to an active site cysteine irreversibly, without inducing DNA strand breaks. ATases are specific for repair of guanines with O6-alkyl adducts, however human ATase is not limited to O6-methylguanine, repairing many other adducts at the O6-position of guanine as well. ATase is widely distributed among species. Most ATases have N- and C-terminal domains. The C-terminal domain contains the conserved active-site cysteine motif (PCHR), the O6-alkylguanine binding channel, and the helix-turn-helix (HTH) DNA-binding motif. The active site is located near the recognition helix of the HTH motif. While the C-terminal domain of ATase contains residues that are necessary for DNA binding and alkyl transfer, the function of the N-terminal domain is still unknown. Removal of the N-terminal domain abolishes the activity of the C-terminal domain, suggesting an important structural role for the N-terminal domain in orienting the C-terminal domain for proper catalysis. Some ATase C-terminal domain homologs are either single-domain proteins that lack an N-terminal domain, or have a tryptophan substituted in place of the acceptor cysteine (i.e. the motif PCHR is replaced by PWHR). ATase null mutant mice are viable, fertile, and have a normal lifespan. The actual alignment was detected with superfamily member TIGR00589: Pssm-ID: 475221 Cd Length: 80 Bit Score: 114.33 E-value: 1.91e-33
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AdaB | COG0350 | DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, ... |
22-190 | 9.73e-31 | ||||
DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, recombination and repair]; : Pssm-ID: 440119 [Multi-domain] Cd Length: 163 Bit Score: 109.96 E-value: 9.73e-31
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Name | Accession | Description | Interval | E-value | ||||
ogt | TIGR00589 | O-6-methylguanine DNA methyltransferase; All proteins in this family for which functions are ... |
111-189 | 1.91e-33 | ||||
O-6-methylguanine DNA methyltransferase; All proteins in this family for which functions are known are involved alkyl-DNA transferases which remove alkyl groups from DNA as part of alkylation DNA repair. Some of the proteins in this family are also transcription regulators and have a distinct transcription regulatory domain. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair] Pssm-ID: 273157 Cd Length: 80 Bit Score: 114.33 E-value: 1.91e-33
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AdaB | COG0350 | DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, ... |
22-190 | 9.73e-31 | ||||
DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, recombination and repair]; Pssm-ID: 440119 [Multi-domain] Cd Length: 163 Bit Score: 109.96 E-value: 9.73e-31
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PRK15435 | PRK15435 | bifunctional DNA-binding transcriptional regulator/O6-methylguanine-DNA methyltransferase Ada; |
62-192 | 1.21e-24 | ||||
bifunctional DNA-binding transcriptional regulator/O6-methylguanine-DNA methyltransferase Ada; Pssm-ID: 185333 [Multi-domain] Cd Length: 353 Bit Score: 98.33 E-value: 1.21e-24
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DNA_binding_1 | pfam01035 | 6-O-methylguanine DNA methyltransferase, DNA binding domain; This is the C-terminal ... |
112-190 | 1.54e-22 | ||||
6-O-methylguanine DNA methyltransferase, DNA binding domain; This is the C-terminal DNA-binding domain of 6-O-methylguanine-DNA methyltransferases. Pssm-ID: 460036 Cd Length: 81 Bit Score: 86.26 E-value: 1.54e-22
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ATase | cd06445 | The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT ... |
113-190 | 4.25e-22 | ||||
The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT and MGMT) reverses O6-alkylation DNA damage by transferring O6-alkyl adducts to an active site cysteine irreversibly, without inducing DNA strand breaks. ATases are specific for repair of guanines with O6-alkyl adducts, however human ATase is not limited to O6-methylguanine, repairing many other adducts at the O6-position of guanine as well. ATase is widely distributed among species. Most ATases have N- and C-terminal domains. The C-terminal domain contains the conserved active-site cysteine motif (PCHR), the O6-alkylguanine binding channel, and the helix-turn-helix (HTH) DNA-binding motif. The active site is located near the recognition helix of the HTH motif. While the C-terminal domain of ATase contains residues that are necessary for DNA binding and alkyl transfer, the function of the N-terminal domain is still unknown. Removal of the N-terminal domain abolishes the activity of the C-terminal domain, suggesting an important structural role for the N-terminal domain in orienting the C-terminal domain for proper catalysis. Some ATase C-terminal domain homologs are either single-domain proteins that lack an N-terminal domain, or have a tryptophan substituted in place of the acceptor cysteine (i.e. the motif PCHR is replaced by PWHR). ATase null mutant mice are viable, fertile, and have a normal lifespan. Pssm-ID: 119438 [Multi-domain] Cd Length: 79 Bit Score: 85.23 E-value: 4.25e-22
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Atl1 | COG3695 | Alkylated DNA nucleotide flippase Atl1, participates in nucleotide excision repair, Ada-like ... |
111-189 | 7.74e-03 | ||||
Alkylated DNA nucleotide flippase Atl1, participates in nucleotide excision repair, Ada-like DNA-binding domain [Transcription]; Pssm-ID: 442910 Cd Length: 104 Bit Score: 34.78 E-value: 7.74e-03
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Name | Accession | Description | Interval | E-value | ||||
ogt | TIGR00589 | O-6-methylguanine DNA methyltransferase; All proteins in this family for which functions are ... |
111-189 | 1.91e-33 | ||||
O-6-methylguanine DNA methyltransferase; All proteins in this family for which functions are known are involved alkyl-DNA transferases which remove alkyl groups from DNA as part of alkylation DNA repair. Some of the proteins in this family are also transcription regulators and have a distinct transcription regulatory domain. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair] Pssm-ID: 273157 Cd Length: 80 Bit Score: 114.33 E-value: 1.91e-33
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AdaB | COG0350 | DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, ... |
22-190 | 9.73e-31 | ||||
DNA repair enzyme Ada (O6-methylguanine-DNA--protein-cysteine methyltransferase) [Replication, recombination and repair]; Pssm-ID: 440119 [Multi-domain] Cd Length: 163 Bit Score: 109.96 E-value: 9.73e-31
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PRK15435 | PRK15435 | bifunctional DNA-binding transcriptional regulator/O6-methylguanine-DNA methyltransferase Ada; |
62-192 | 1.21e-24 | ||||
bifunctional DNA-binding transcriptional regulator/O6-methylguanine-DNA methyltransferase Ada; Pssm-ID: 185333 [Multi-domain] Cd Length: 353 Bit Score: 98.33 E-value: 1.21e-24
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DNA_binding_1 | pfam01035 | 6-O-methylguanine DNA methyltransferase, DNA binding domain; This is the C-terminal ... |
112-190 | 1.54e-22 | ||||
6-O-methylguanine DNA methyltransferase, DNA binding domain; This is the C-terminal DNA-binding domain of 6-O-methylguanine-DNA methyltransferases. Pssm-ID: 460036 Cd Length: 81 Bit Score: 86.26 E-value: 1.54e-22
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ATase | cd06445 | The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT ... |
113-190 | 4.25e-22 | ||||
The DNA repair protein O6-alkylguanine-DNA alkyltransferase (ATase; also known as AGT, AGAT and MGMT) reverses O6-alkylation DNA damage by transferring O6-alkyl adducts to an active site cysteine irreversibly, without inducing DNA strand breaks. ATases are specific for repair of guanines with O6-alkyl adducts, however human ATase is not limited to O6-methylguanine, repairing many other adducts at the O6-position of guanine as well. ATase is widely distributed among species. Most ATases have N- and C-terminal domains. The C-terminal domain contains the conserved active-site cysteine motif (PCHR), the O6-alkylguanine binding channel, and the helix-turn-helix (HTH) DNA-binding motif. The active site is located near the recognition helix of the HTH motif. While the C-terminal domain of ATase contains residues that are necessary for DNA binding and alkyl transfer, the function of the N-terminal domain is still unknown. Removal of the N-terminal domain abolishes the activity of the C-terminal domain, suggesting an important structural role for the N-terminal domain in orienting the C-terminal domain for proper catalysis. Some ATase C-terminal domain homologs are either single-domain proteins that lack an N-terminal domain, or have a tryptophan substituted in place of the acceptor cysteine (i.e. the motif PCHR is replaced by PWHR). ATase null mutant mice are viable, fertile, and have a normal lifespan. Pssm-ID: 119438 [Multi-domain] Cd Length: 79 Bit Score: 85.23 E-value: 4.25e-22
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PRK00901 | PRK00901 | methylated-DNA--protein-cysteine methyltransferase; Provisional |
98-193 | 4.25e-21 | ||||
methylated-DNA--protein-cysteine methyltransferase; Provisional Pssm-ID: 234860 [Multi-domain] Cd Length: 155 Bit Score: 84.72 E-value: 4.25e-21
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PRK10286 | PRK10286 | methylated-DNA--[protein]-cysteine S-methyltransferase; |
89-189 | 9.56e-16 | ||||
methylated-DNA--[protein]-cysteine S-methyltransferase; Pssm-ID: 182355 [Multi-domain] Cd Length: 171 Bit Score: 71.44 E-value: 9.56e-16
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AdaA | COG2169 | Methylphosphotriester-DNA--protein-cysteine methyltransferase (N-terminal fragment of Ada), ... |
24-189 | 4.42e-15 | ||||
Methylphosphotriester-DNA--protein-cysteine methyltransferase (N-terminal fragment of Ada), contains Zn-binding and two AraC-type DNA-binding domains [Replication, recombination and repair]; Pssm-ID: 441772 [Multi-domain] Cd Length: 358 Bit Score: 72.01 E-value: 4.42e-15
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PRK03887 | PRK03887 | methylated-DNA--protein-cysteine methyltransferase; Provisional |
111-194 | 3.05e-07 | ||||
methylated-DNA--protein-cysteine methyltransferase; Provisional Pssm-ID: 167628 [Multi-domain] Cd Length: 175 Bit Score: 48.19 E-value: 3.05e-07
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Atl1 | COG3695 | Alkylated DNA nucleotide flippase Atl1, participates in nucleotide excision repair, Ada-like ... |
111-189 | 7.74e-03 | ||||
Alkylated DNA nucleotide flippase Atl1, participates in nucleotide excision repair, Ada-like DNA-binding domain [Transcription]; Pssm-ID: 442910 Cd Length: 104 Bit Score: 34.78 E-value: 7.74e-03
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Blast search parameters | ||||
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