CDC20(Cell Division Cycle 20)是一种关键的细胞周期调控蛋白,属于后期促进复合物/环体(APC/C,Anaphase-Promoting Complex/Cyclosome)的共激活因子。它的主要生物学功能是调控细胞有丝分裂的进程,特别是促进中期到后期的转变。CDC20通过与APC/C结合,介导特定底物蛋白(如securin和cyclin B)的泛素化降解,从而确保染色体的正确分离和细胞周期的正常进行。CDC20的作用位点主要集中在有丝分裂纺锤体检查点(spindle assembly checkpoint),该检查点负责监控染色体是否正确附着于纺锤体上。如果CDC20发生突变或功能异常,可能导致细胞周期失控,引发染色体不稳定性(chromosomal instability),进而促进肿瘤的发生。研究表明,CDC20的过表达与多种癌症(如乳腺癌、肝癌和结直肠癌)的进展和不良预后相关,因为它可能加速细胞增殖并抑制凋亡。相反,CDC20表达降低可能导致细胞周期停滞或异常退出有丝分裂,甚至引发细胞死亡。CDC20属于CDC20基因家族,该家族成员(如CDC20同源蛋白CDH1)通常具有保守的WD40结构域,能够与APC/C相互作用并调控其底物特异性。CDC20家族的共性是通过APC/C依赖的蛋白降解途径参与细胞周期、DNA损伤修复等关键生物学过程。此外,CDC20的表达水平还可能影响其他基因或通路,如p53信号通路,从而间接调控细胞命运。
CDC20 appears to act as a regulatory protein interacting with several other proteins at multiple points in the cell cycle. It is required for two microtubule-dependent processes, nuclear movement prior to anaphase and chromosome separation. [provided by RefSeq, Jul 2008]
CDC20似乎充当调节蛋白与在细胞周期的多个点的几个其他蛋白质相互作用。它需要两个微管依赖性过程,后期和染色体分离前核运动。 [由RefSeq的,2008年7月提供]
CDC20基因(以及对应的蛋白质)的细胞分布位置:
CDC20基因的本体(GO)信息:
名称 |
---|
4120 Ubiquitin mediated proteolysis [PATH:hsa04120] |
4110 Cell cycle [PATH:hsa04110] |
4114 Oocyte meiosis [PATH:hsa04114] |
5203 Viral carcinogenesis [PATH:hsa05203] |
5166 HTLV-I infection [PATH:hsa05166] |
名称 |
---|
Activation of APC/C and APC/C:Cdc20 mediated degradation of mitotic proteins |
Adaptive Immune System |
Antigen processing: Ubiquitination & Proteasome degradation |
APC-Cdc20 mediated degradation of Nek2A |
APC:Cdc20 mediated degradation of cell cycle proteins prior to satisfation of the cell cycle checkpoint |
APC/C-mediated degradation of cell cycle proteins |
APC/C:Cdc20 mediated degradation of Cyclin B |
APC/C:Cdc20 mediated degradation of mitotic proteins |
APC/C:Cdc20 mediated degradation of Securin |
APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 |
Cdc20:Phospho-APC/C mediated degradation of Cyclin A |
Cell Cycle |
Cell Cycle Checkpoints |
Cell Cycle, Mitotic |
Class I MHC mediated antigen processing & presentation |
Conversion from APC/C:Cdc20 to APC/C:Cdh1 in late anaphase |
Immune System |
Inactivation of APC/C via direct inhibition of the APC/C complex |
Inhibition of the proteolytic activity of APC/C required for the onset of anaphase by mitotic spindle checkpoint components |
M Phase |
Mitotic Anaphase |
Mitotic Metaphase and Anaphase |
Mitotic Prometaphase |
Mitotic Spindle Checkpoint |
Phosphorylation of Emi1 |
Regulation of APC/C activators between G1/S and early anaphase |
Regulation of mitotic cell cycle |
Resolution of Sister Chromatid Cohesion |
RHO GTPase Effectors |
RHO GTPases Activate Formins |
SCF-beta-TrCP mediated degradation of Emi1 |
Separation of Sister Chromatids |
Signal Transduction |
Signaling by Rho GTPases |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
IGA Glomerulonephritis | 0.12 | 1 | 0 | CTD_human |
Glioblastoma | 0.002995792 | 1 | 0 | BeFree_LHGDN |
Leukemia, T-Cell | 0.00272435 | 1 | 0 | LHGDN |
Stomach Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
Mouth Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
Malignant neoplasm of breast | 0.002638474 | 2 | 0 | BeFree_GAD |
Malignant neoplasm of ovary | 0.002367032 | 1 | 0 | GAD |
Carcinogenesis | 0.001628651 | 6 | 0 | BeFree |
Rash and Dermatitis Adverse Event Associated with Chemoradiation | 0.000542884 | 2 | 0 | BeFree |
Liver carcinoma | 0.000542884 | 2 | 0 | BeFree |
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