Ubiquitin regulatory domain X (UBX) found in FAS associated factor 1 (FAF1, also known as UBXN3A) and similar proteins; UBX domain-containing protein 3A (UBXN3A),also termed UBX domain-containing protein 12 (UBXD12), or FAF1, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. In addition, FAF1 contains two tandem ubiquitin-like (Ubl) domains, which shows high structural similarity with UBX domain. FAF1 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The FAF1-p97 complex inhibits the proteasomal protein degradation in which p97 acts as a co-chaperone. Moreover, FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. FAF1 is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kappaB (NF-kappaB) by interfering with the nuclear translocation of the p65 subunit. Although the precise role of FAF1 in the ubiquitination pathway remains unclear, FAF1 interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway. This family corresponds to UBX domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 533 AEIINVKFRLPEGGQDMRRFRRLESIQTLINYLSSKGYSPDKFKYFNSdFPKKEITRhFDLSHNFADTKWPAREQIFVEE 612
Cdd:cd01771     2 EPISKLRFRLPGGEFLTRRFLASEPLQVLLNFVASKGYPPDEYKLLTT-FPRRDLTQ-LDPSKTLEELKLFPQETLFLEE 79

                  .
gi 1845971446 613 I 613
Cdd:cd01771    80 R 80

UBA-like domain;

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1845971446  12 REKLRQYTEFTHQqDYEVAIGTLASLNWNLEQAIEAHLMQED 53
Cdd:pfam14555   1 DELIAQFQAITGA-DEEVARQYLEAHNWDLEAAVNAFFDDGE 41

Ubiquitin regulatory domain X (UBX) found in FAS associated factor 1 (FAF1, also known as UBXN3A) and similar proteins; UBX domain-containing protein 3A (UBXN3A),also termed UBX domain-containing protein 12 (UBXD12), or FAF1, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. In addition, FAF1 contains two tandem ubiquitin-like (Ubl) domains, which shows high structural similarity with UBX domain. FAF1 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The FAF1-p97 complex inhibits the proteasomal protein degradation in which p97 acts as a co-chaperone. Moreover, FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. FAF1 is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kappaB (NF-kappaB) by interfering with the nuclear translocation of the p65 subunit. Although the precise role of FAF1 in the ubiquitination pathway remains unclear, FAF1 interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway. This family corresponds to UBX domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 533 AEIINVKFRLPEGGQDMRRFRRLESIQTLINYLSSKGYSPDKFKYFNSdFPKKEITRhFDLSHNFADTKWPAREQIFVEE 612
Cdd:cd01771     2 EPISKLRFRLPGGEFLTRRFLASEPLQVLLNFVASKGYPPDEYKLLTT-FPRRDLTQ-LDPSKTLEELKLFPQETLFLEE 79

                  .
gi 1845971446 613 I 613
Cdd:cd01771    80 R 80

UAS family, FAS-associated factor 1 (FAF1) subfamily; FAF1 contains a UAS domain of unknown function N-terminal to a ubiquitin-associated UBX domain. FAF1 also contains ubiquitin-associated UBA and nuclear targeting domains, N-terminal to the UAS domain. FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. It is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kB (NF-kB) by interfering with the nuclear translocation of the p65 subunit. FAF1 also interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 309 FYTEPLPAAVKEAFDHPNSEhRRPLLFYINHDRSIAANIFASQVLCSETVSTLIRHQYVLFPWDITSDSNLMLFLEYLQa 388
Cdd:cd02990     1 FFIGSLEAAFQEACYRKARD-RKLLAIYLHHDESVLSNVFCSQLLCAESIVQYLSQNFITWGWDMTKESNKARFLSSCT- 78

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 389 ANMGDVRTIIQRlaMSKIESFPLMAIVVKERNSYRLVDYCRGTDTSDQVMEKLLSGVSEY 448
Cdd:cd02990    79 RHFGSVAAQTIR--NIKTDQLPAILIIMGKRSSNEVLNVIQGNTGVDELLMRLIEAMEMF 136

UBA-like domain found in DCN1-like protein DCNL1, DCNL2 and similar proteins; DCNL1 (defective in cullin neddylation protein 1-like protein 1), also called DCUN1 domain-containing protein 1, is encoded by squamous cell carcinoma-related oncogene SCCRO (DCUN1D1). It interacts with known cullin isoforms as well as ROC1, Ubc12 and CAND1, the components of the neddylation pathway. It plays an essential role in the neddylation E3 complex and participates in the release of inhibitory effects of CAND1 on cullin-RING ligase E3 complex assembly and activity. DCNL1 contains an N-terminal ubiquitin-associated (UBA)-like domain and a C-terminal cullin binding domain that binds to cullins and Rbx-1, components of an E3 ubiquitin ligase complex for neddylation. DCNL2 (defective in cullin neddylation protein 1-like protein 2), also called DCUN1 domain-containing protein 2, is encoded by gene DCUN1D2. Although its biological function remains unclear, DCNL2 shows high sequence similarity with DCNL1 and may also contribute to neddylation of cullin components of SCF-type E3 ubiquitin ligase complexes. Like DCNL1, DCNL2 contains an N-terminal UBA-like domain and a C-terminal cullin binding domain.

                          10        20        30
                  ....*....|....*....|....*....|....*...
gi 1845971446  10 DQREKLRQYTEFThQQDYEVAIGTLASLNWNLEQAIEA 47
Cdd:cd14350     1 SQKDKVRQFMSIT-QANEKTAIQCLKDADWNLELAVDA 37

Ubiquitin regulatory domain X (UBX) found in FAS associated factor 1 (FAF1, also known as UBXN3A) and similar proteins; UBX domain-containing protein 3A (UBXN3A),also termed UBX domain-containing protein 12 (UBXD12), or FAF1, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. In addition, FAF1 contains two tandem ubiquitin-like (Ubl) domains, which shows high structural similarity with UBX domain. FAF1 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. The FAF1-p97 complex inhibits the proteasomal protein degradation in which p97 acts as a co-chaperone. Moreover, FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. FAF1 is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kappaB (NF-kappaB) by interfering with the nuclear translocation of the p65 subunit. Although the precise role of FAF1 in the ubiquitination pathway remains unclear, FAF1 interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway. This family corresponds to UBX domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 533 AEIINVKFRLPEGGQDMRRFRRLESIQTLINYLSSKGYSPDKFKYFNSdFPKKEITRhFDLSHNFADTKWPAREQIFVEE 612
Cdd:cd01771     2 EPISKLRFRLPGGEFLTRRFLASEPLQVLLNFVASKGYPPDEYKLLTT-FPRRDLTQ-LDPSKTLEELKLFPQETLFLEE 79

                  .
gi 1845971446 613 I 613
Cdd:cd01771    80 R 80

UAS family, FAS-associated factor 1 (FAF1) subfamily; FAF1 contains a UAS domain of unknown function N-terminal to a ubiquitin-associated UBX domain. FAF1 also contains ubiquitin-associated UBA and nuclear targeting domains, N-terminal to the UAS domain. FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. It is widely expressed in adult and embryonic tissues, and in tumor cell lines, and is localized not only in the cytoplasm where it interacts with Fas, but also in the nucleus. FAF1 contains phosphorylation sites for protein kinase CK2 within the nuclear targeting domain. Phosphorylation influences nuclear localization of FAF1 but does not affect its potentiation of Fas-induced apoptosis. Other functions have also been attributed to FAF1. It inhibits nuclear factor-kB (NF-kB) by interfering with the nuclear translocation of the p65 subunit. FAF1 also interacts with valosin-containing protein (VCP), which is involved in the ubiquitin-proteosome pathway.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 309 FYTEPLPAAVKEAFDHPNSEhRRPLLFYINHDRSIAANIFASQVLCSETVSTLIRHQYVLFPWDITSDSNLMLFLEYLQa 388
Cdd:cd02990     1 FFIGSLEAAFQEACYRKARD-RKLLAIYLHHDESVLSNVFCSQLLCAESIVQYLSQNFITWGWDMTKESNKARFLSSCT- 78

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1845971446 389 ANMGDVRTIIQRlaMSKIESFPLMAIVVKERNSYRLVDYCRGTDTSDQVMEKLLSGVSEY 448
Cdd:cd02990    79 RHFGSVAAQTIR--NIKTDQLPAILIIMGKRSSNEVLNVIQGNTGVDELLMRLIEAMEMF 136

Ubiquitin regulatory domain X (UBX) structurally similar to a beta-grasp ubiquitin-like fold; The UBXD family of proteins contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. Members in this family function as cofactors of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. Based on domain composition, UBXD proteins can be divided into two main groups, with and without ubiquitin-associated (UBA) domain.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1845971446 537 NVKFRLPEGGQDMRRFRRLESIQTLINYLSSKGYSPDKFKYFNSDFPKKEITRHfDLSHNFADTKWPAREQIFVE 611
Cdd:cd01767     1 RIQIRLPDGSRIQRRFSKSDTLQDLYDFVESNLGDSPSSFSLVTSFPRRVLTDE-DSDKTLEELGLTPNAVLFVE 74

UBA-like domain found in DCN1-like protein DCNL1, DCNL2 and similar proteins; DCNL1 (defective in cullin neddylation protein 1-like protein 1), also called DCUN1 domain-containing protein 1, is encoded by squamous cell carcinoma-related oncogene SCCRO (DCUN1D1). It interacts with known cullin isoforms as well as ROC1, Ubc12 and CAND1, the components of the neddylation pathway. It plays an essential role in the neddylation E3 complex and participates in the release of inhibitory effects of CAND1 on cullin-RING ligase E3 complex assembly and activity. DCNL1 contains an N-terminal ubiquitin-associated (UBA)-like domain and a C-terminal cullin binding domain that binds to cullins and Rbx-1, components of an E3 ubiquitin ligase complex for neddylation. DCNL2 (defective in cullin neddylation protein 1-like protein 2), also called DCUN1 domain-containing protein 2, is encoded by gene DCUN1D2. Although its biological function remains unclear, DCNL2 shows high sequence similarity with DCNL1 and may also contribute to neddylation of cullin components of SCF-type E3 ubiquitin ligase complexes. Like DCNL1, DCNL2 contains an N-terminal UBA-like domain and a C-terminal cullin binding domain.

                          10        20        30
                  ....*....|....*....|....*....|....*...
gi 1845971446  10 DQREKLRQYTEFThQQDYEVAIGTLASLNWNLEQAIEA 47
Cdd:cd14350     1 SQKDKVRQFMSIT-QANEKTAIQCLKDADWNLELAVDA 37

Ubiquitin regulatory domain X (UBX) found in UBX domain protein 8 (UBXN8) and similar proteins; UBXN8, also termed reproduction 8 protein (Rep8), or UBX domain-containing protein 6 (UBXD6), or D8S2298E, belongs to the UBXD family of proteins that contains the ubiquitin regulatory domain X (UBX) with a beta-grasp ubiquitin-like fold, but without the C-terminal double glycine motif. UBX domain is typically located at the carboxyl terminus of proteins, and participates broadly in the regulation of protein degradation. UBXN8 functions as a cofactor of p97 (also known as VCP or Cdc48), which is a homohexameric AAA ATPase (ATPase associated with a variety of activities) involved in a variety of functions ranging from cell-cycle regulation to membrane fusion and protein degradation. UBXN8 is a transmembrane protein that localizes to the endoplasmic reticulum (ER) membrane with its UBX domain facing the cytoplasm. It facilitates efficient ER-associated degradation (ERAD) by tethering p97 to the ER membrane.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1845971446 534 EIINVKFRLPEGGQDMRRFRRLESIQTLINYLSSKGYSPDKFKYFNSdFPKKEITRHFDLS 594
Cdd:cd01774     1 GAVTIALRFPGGRVHRRRFLTTENIQVLLDWMTKLGYHQTLYTLSTT-YPRTILSDDADKT 60

UBA-like domain found in the NXF family of mRNA nuclear export factors and similar proteins; This family includes nuclear RNA export factors (NXF1/NXF2), FAS-associated factors (FAF1/2), tyrosyl-DNA phosphodiesterase 2 (TDP2), OTU domain-containing proteins (OTU7A/OTU7B), NSFL1 cofactor p47, defective in cullin neddylation protein 1 (DCN1)-like protein (DCNL1/DCNL2), yeast defective in cullin neddylation protein 1 (DCN1) and similar proteins. NXF proteins can stimulate nuclear export of mRNAs and facilitate the export of unspliced viral mRNA containing the constitutive transport element. FAF1 is an apoptotic signaling molecule that acts downstream in the Fas signal transduction pathway. It interacts with the cytoplasmic domain of Fas, but not to a Fas mutant that is deficient in signal transduction. FAF2 is the translation product of a highly expressed gene in the T-cells and eosinophils of atopic dermatitis patients compared with those of normal individuals. Its biological function remains unclear. TDP2 is a 5'-Tyr-DNA phosphodiesterase required for the efficient repair of topoisomerase II-induced DNA double strand breaks. OTU7A and OTU7B are zinc finger proteins that function as deubiquitinating enzymes. p47 is a major cofactor of the cytosolic AAA ATPase p97. It is required for the p97-regulated membrane reassembly of the endoplasmic reticulum (ER), the nuclear envelope and the Golgi apparatus. DCNL1 plays an essential role in the neddylation E3 complex and participates in the release of inhibitory effects of CAND1 on cullin-RING ligase E3 complex assembly and activity. The biological function of DCNL2 remains unclear. Yeast DCN1 is a scaffold-type E3 ligase for cullin neddylation. It can bind directly to cullins and the ubiquitin-like protein Nedd8-specific E2 (Ubc12), and regulate cullin neddylation and thus display ubiquitin ligase activity.

                          10        20        30
                  ....*....|....*....|....*....|.
gi 1845971446  19 TEFThQQDYEVAIGTLASLNWNLEQAIEAHL 49
Cdd:cd14273     2 MEIT-GADPETARQYLESNNWDLEAAINLYF 31