4O1V image
Entry Detail
PDB ID:
4O1V
Keywords:
Title:
SPOP Promotes Tumorigenesis by Acting as a Key Regulatory Hub in Kidney Cancer
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2013-12-16
Release Date:
2014-04-30
Method Details:
Experimental Method:
Resolution:
2.00 Å
R-Value Free:
0.22
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Speckle-type POZ protein
Chain IDs:A
Chain Length:145
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN
Chain IDs:B
Chain Length:15
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
SPOP Promotes Tumorigenesis by Acting as a Key Regulatory Hub in Kidney Cancer.
Cancer Cell 25 455 468 (2014)
PMID: 24656772 DOI: 10.1016/j.ccr.2014.02.007

Abstact

Hypoxic stress and hypoxia-inducible factors (HIFs) play important roles in a wide range of tumors. We demonstrate that SPOP, which encodes an E3 ubiquitin ligase component, is a direct transcriptional target of HIFs in clear cell renal cell carcinoma (ccRCC). Furthermore, hypoxia results in cytoplasmic accumulation of SPOP, which is sufficient to induce tumorigenesis. This tumorigenic activity occurs through the ubiquitination and degradation of multiple regulators of cellular proliferation and apoptosis, including the tumor suppressor PTEN, ERK phosphatases, the proapoptotic molecule Daxx, and the Hedgehog pathway transcription factor Gli2. Knockdown of SPOP specifically kills ccRCC cells, indicating that it may be a promising therapeutic target. Collectively, our results indicate that SPOP serves as a regulatory hub to promote ccRCC tumorigenesis.

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