バックグラウンド: | Apoptotic regulator capable of exerting proapoptotic and anti-apoptotic activities and plays crucial roles in apoptosis, cell proliferation, and cell cycle control. Its anti-apoptotic activity is mediated through the inhibition of CASP3, CASP7 and CASP9, as well as by its E3 ubiquitin-protein ligase activity. As it is a weak caspase inhibitor, its anti-apoptotic activity is thought to be due to its ability to ubiquitinate DIABLO/SMAC targeting it for degradation thereby promoting cell survival. May contribute to caspase inhibition, by blocking the ability of DIABLO/SMAC to disrupt XIAP/BIRC4-caspase interactions. Protects against apoptosis induced by TNF or by chemical agents such as adriamycin, etoposide or staurosporine. Suppression of apoptosis is mediated by activation of MAPK8/JNK1, and possibly also of MAPK9/JNK2. This activation depends on TAB1 and NR2C2/TAK1. In vitro, inhibits CASP3 and proteolytic activation of pro-CASP9. Isoform 1 blocks staurosporine-induced apoptosis. Isoform 2 blocks etoposide-induced apoptosis. Isoform 2 protects against natural killer (NK) cell killing whereas isoform 1 augments killing. |
シノニム: | Baculoviral IAP repeat-containing protein 7 (EC 2.3.2.27) (Kidney inhibitor of apoptosis protein) (KIAP) (Livin) (Melanoma inhibitor of apoptosis protein) (ML-IAP) (RING finger protein 50) (RING-type E3 ubiquitin transferase BIRC7) [Cleaved into: Baculoviral IAP repeat-containing protein 7 30kDa subunit (Truncated livin) (p30-Livin) (tLivin)], BIRC7, KIAP LIVIN MLIAP RNF50 |
UniProt Protein Function: | BIRC7: Apoptotic regulator capable of exerting proapoptotic and anti-apoptotic activities and plays crucial roles in apoptosis, cell proliferation, and cell cycle control. Its anti-apoptotic activity is mediated through the inhibition of CASP3, CASP7 and CASP9, as well as by its E3 ubiquitin-protein ligase activity. As it is a weak caspase inhibitor, its anti-apoptotic activity is thought to be due to its ability to ubiquitinate DIABLO/SMAC targeting it for degradation thereby promoting cell survival. May contribute to caspase inhibition, by blocking the ability of DIABLO/SMAC to disrupt XIAP/BIRC4-caspase interactions. Protects against apoptosis induced by TNF or by chemical agents such as adriamycin, etoposide or staurosporine. Suppression of apoptosis is mediated by activation of MAPK8/JNK1, and possibly also of MAPK9/JNK2. This activation depends on TAB1 and NR2C2/TAK1. In vitro, inhibits CASP3 and proteolytic activation of pro-CASP9. Isoform 1 blocks staurosporine-induced apoptosis. Isoform 2 blocks etoposide-induced apoptosis. Isoform 2 protects against natural killer (NK) cell killing whereas isoform 1 augments killing. Binds to CASP9. Interaction with DIABLO/SMAC via the BIR domain disrupts binding to CASP9 and apoptotic suppressor activity. Interacts with TAB1. In vitro, interacts with CASP3 and CASP7 via its BIR domain. Isoform 1 and isoform 2 are expressed at very low levels or not detectable in most adult tissues. Detected in adult heart, placenta, lung, lymph node, spleen and ovary, and in several carcinoma cell lines. Isoform 2 is detected in fetal kidney, heart and spleen, and at lower levels in adult brain, skeletal muscle and peripheral blood leukocytes. Belongs to the IAP family. 2 isoforms of the human protein are produced by alternative splicing. |
UniProt Protein Details: | Protein type:Apoptosis; EC 6.3.2.-; Ligase; Ubiquitin conjugating system; Ubiquitin ligase Chromosomal Location of Human Ortholog: 20q13.33 Cellular Component: cytoplasm; Golgi apparatus; nucleus; spindle microtubule Molecular Function:cysteine protease inhibitor activity; protein binding; ubiquitin-protein ligase activity Biological Process: negative regulation of apoptosis; protein ubiquitination; regulation of cell proliferation; regulation of signal transduction |
NCBI Summary: | This gene encodes a member of the inhibitor of apoptosis protein (IAP) family, and contains a single copy of a baculovirus IAP repeat (BIR) as well as a RING-type zinc finger domain. The BIR domain is essential for inhibitory activity and interacts with caspases, while the RING finger domain sometimes enhances antiapoptotic activity but does not inhibit apoptosis alone. Elevated levels of the encoded protein may be associated with cancer progression and play a role in chemotherapy sensitivity. Alternative splicing results in multiple transcript variants [provided by RefSeq, Jul 2013] |
UniProt Code: | Q96CA5 |
NCBI GenInfo Identifier: | 21759008 |
NCBI Gene ID: | 79444 |
NCBI Accession: | Q96CA5.2 |
UniProt Secondary Accession: | Q96CA5,Q9BQV0, Q9H2A8, Q9HAP7, |
UniProt Related Accession: | Q96CA5 |
Molecular Weight: | 30,866 Da |
NCBI Full Name: | Baculoviral IAP repeat-containing protein 7 |
NCBI Synonym Full Names: | baculoviral IAP repeat containing 7 |
NCBI Official Symbol: | BIRC7 |
NCBI Official Synonym Symbols: | KIAP; LIVIN; MLIAP; RNF50; ML-IAP |
NCBI Protein Information: | baculoviral IAP repeat-containing protein 7 |
UniProt Protein Name: | Baculoviral IAP repeat-containing protein 7 |
UniProt Synonym Protein Names: | Kidney inhibitor of apoptosis protein; KIAP |
Protein Family: | Baculoviral IAP repeat-containing protein |
UniProt Gene Name: | BIRC7 |