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BIRC5 O15392

含杆状病毒IAP重复序列蛋白5 (凋亡抑制蛋白4) (凋亡抑制蛋白存活素)

蛋白质信息 (UniProt)

含杆状病毒IAP重复序列蛋白5 (凋亡抑制蛋白4) (凋亡抑制蛋白存活素)

O15392

功能描述

多功能蛋白,在促进细胞增殖和抑制细胞凋亡方面具有双重作用 (PubMed:20627126, PubMed:21364656, PubMed:25778398, PubMed:28218735, PubMed:9859993)。染色体过客蛋白复合物 (CPC) 的组分,该复合物对于有丝分裂和胞质分裂过程中的染色体排列和分离至关重要 (PubMed:16322459)。作为该复合物定位的重要调节因子;指导 CPC 从前中期的内着丝粒移动到胞质分裂期间的中间体,并通过与聚合微管结合参与中心纺锤体的组织 (PubMed:20826784)。通过与有丝分裂期间在 'Thr-3' 位点磷酸化的组蛋白 H3 (H3pT3) 结合,参与早期有丝分裂过程中 CPC 向着丝粒的募集 (PubMed:20929775)。与 RAN 形成的复合物通过作为物理支架帮助将 RAN 效应分子 TPX2 递送至微管,从而在有丝分裂纺锤体形成中发挥作用 (PubMed:18591255)。可能对抗 G2/M 期细胞凋亡的默认诱导 (PubMed:9859993)。乙酰化形式抑制 STAT3 对靶基因启动子的反式激活 (PubMed:20826784)。可能在肿瘤发生中发挥作用 (PubMed:10626797)。CASP3 和 CASP7 的抑制剂 (PubMed:21536684)。对于维持线粒体完整性和功能至关重要 (PubMed:25778398)。Isoform 2 和 isoform 3 似乎在有丝分裂中不起重要作用 (PubMed:12773388, PubMed:16291752)。与显示的野生型 isoform 相比,Isoform 3 的抗凋亡作用显著降低 (PubMed:10626797)。 {ECO:0000269|PubMed:10626797, ECO:0000269|PubMed:12773388, ECO:0000269|PubMed:16291752, ECO:0000269|PubMed:16322459, ECO:0000269|PubMed:18591255, ECO:0000269|PubMed:20627126, ECO:0000269|PubMed:20826784, ECO:0000269|PubMed:20929775, ECO:0000269|PubMed:21364656, ECO:0000269|PubMed:21536684, ECO:0000269|PubMed:25778398, ECO:0000269|PubMed:28218735, ECO:0000269|PubMed:9859993}。

组织特异性

Expressed only in fetal kidney and liver, and to lesser extent, lung and brain (PubMed:10626797). Abundantly expressed in adenocarcinoma (lung, pancreas, colon, breast, and prostate) and in high-grade lymphomas (PubMed:14741722, PubMed:16329164). Also expressed in various renal cell carcinoma cell lines (PubMed:10626797). Expressed in cochlea including the organ of Corti, the lateral wall, the interdental cells of the Limbus as well as in Schwann cells and cells of the cochlear nerve and the spiral ganglions (at protein level). Not expressed in cells of the inner and outer sulcus or the Reissner's membrane (at protein level) (PubMed:20627126, PubMed:21364656).

亚细胞定位

Cytoplasm

关键词

3D-structure Acetylation Alternative splicing Apoptosis Cell cycle Cell division Centromere Chromosome Chromosome partition Cytoplasm