INHIBITION OF TRANSCRIPTION ELONGATION BY THE VHL TUMOR-SUPPRESSOR PROTEIN

INHIBITION OF TRANSCRIPTION ELONGATION BY THE VHL TUMOR-SUPPRESSOR PROTEIN
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DOI:
10.1126/science.7660122
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发表时间:
1995-09-08
期刊:
影响因子:
56.9
通讯作者:
KLAUSNER, RD
KLAUSNER, RD
中科院分区:
综合性期刊1区
文献类型:
--
作者:
DUAN, DR;PAUSE, A;KLAUSNER, RD

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被引文献

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von Hippel-Lindau 肿瘤抑制基因 (VHL) 的种系突变使个体易患多种肿瘤,包括肾癌、中枢神经系统血管母细胞瘤和嗜铬细胞瘤。在此,细胞转录因子 Elongin (SIII) 被确定为 VHL 蛋白的功能靶标。 Elongin (SIII) 是一种异源三聚体,由一个转录活性亚基 (A) 和两个调节亚基(B 和 C)组成,可通过 RNA 聚合酶 II 激活转录延伸。 VHL 蛋白被证明能够与 Elongin B 和 C 亚基紧密且特异性地结合,并在体外抑制 Elongin (SIII) 转录活性。这些发现揭示了一个潜在重要的转录调控网络,VHL 蛋白可能在其中发挥关键作用。
Germline mutations in the von Hippel-Lindau tumor suppressor gene (VHL) predispose individuals to a variety of tumors, including renal carcinoma, hemangioblastoma of the central nervous system, and pheochromocytoma. Here, a cellular transcription factor, Elongin (SIII), is identified as a functional target of the VHL protein. Elongin (SIII) is a heterotrimer consisting of a transcriptionally active subunit (A) and two regulatory subunits (B and C) that activate transcription elongation by RNA polymerase II. The VHL protein was shown to bind tightly and specifically to the Elongin B and C subunits and to inhibit Elongin (SIII) transcriptional activity in vitro. These findings reveal a potentially important transcriptional regulatory network in which the VHL protein may play a key role.