Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 18.02 kDa 
• Atom Count: 1,260 
• Modelled Residue Count: 148 
• Deposited Residue Count: 160 
• Unique protein chains: 2

 4O1V

SPOP Promotes Tumorigenesis by Acting as a Key Regulatory Hub in Kidney Cancer

• PDB DOI: 10.2210/pdb4O1V/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-12-16 Released: 2014-04-30 
• Deposition Author(s): Calabrese, M.F., Watson, E.R., Schulman, B.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.221 
• R-Value Work: 0.192 
• R-Value Observed: 0.193 

Literature

SPOP Promotes Tumorigenesis by Acting as a Key Regulatory Hub in Kidney Cancer.

Li, G., Ci, W., Karmakar, S., Chen, K., Dhar, R., Fan, Z., Guo, Z., Zhang, J., Ke, Y., Wang, L., Zhuang, M., Hu, S., Li, X., Zhou, L., Li, X., Calabrese, M.F., Watson, E.R., Prasad, S.M., Rinker-Schaeffer, C., Eggener, S.E., Stricker, T., Tian, Y., Schulman, B.A., Liu, J., White, K.P.

(2014) Cancer Cell 25: 455-468

• PubMed: 24656772 
• DOI: 10.1016/j.ccr.2014.02.007
• Primary Citation of Related Structures:  
  4O1V


• PubMed Abstract: 
  

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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Organizational Affiliation: 

Institute for Genomics and Systems Biology, University of Chicago and Argonne National Laboratory, Chicago, IL 60637, USA; Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA; Section on Genetic Medicine, Department of Medicine, University of Chicago, Chicago, IL 60637, USA. Electronic address: [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Speckle-type POZ protein	A	145	Homo sapiens	Mutation(s): 0  Gene Names: SPOP
UniProt & NIH Common Fund Data Resources
Find proteins for O43791 (Homo sapiens) Explore O43791  Go to UniProtKB:  O43791
PHAROS:  O43791

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN	B	15	Homo sapiens	Mutation(s): 0  Gene Names: PTEN, MMAC1, TEP1 EC: 3.1.3.16 (UniProt), 3.1.3.48 (UniProt), 3.1.3.67 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P60484 (Homo sapiens) Explore P60484  Go to UniProtKB:  P60484
PHAROS:  P60484

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.221 
• R-Value Work: 0.192 
• R-Value Observed: 0.193 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.5	α = 90
b = 56.158	β = 97.7
c = 42.611	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-04-30 
Deposition Author(s): Calabrese, M.F., Watson, E.R., Schulman, B.A.

Revision History  

• Version 1.0: 2014-04-30
  Type: Initial release