Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.54 kDa 
• Atom Count: 1235 
• Modelled Residue Count: 161 
• Deposited Residue Count: 161 
• Unique protein chains: 2

2LOZ

The novel binding mode of DLC1 and Tensin2 PTB domain

• DOI: 10.2210/pdb2LOZ/pdb
• BMRB: 17364

• Classification: HYDROLASE/HYDROLASE ACTIVATOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-01-29 Released: 2012-06-06 
• Deposition Author(s): Liu, C., Chen, L., Zhu, G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the least restraint violations 

Literature

Solution structure of the phosphotyrosine binding (PTB) domain of human tensin2 protein in complex with deleted in liver cancer 1 (DLC1) peptide reveals a novel peptide binding mode.

Chen, L., Liu, C., Ko, F.C., Xu, N., Ng, I.O., Yam, J.W., Zhu, G.

(2012) J Biol Chem 287: 26104-26114

• PubMed: 22645138 
• DOI: 10.1074/jbc.M112.360206
• Primary Citation of Related Structures:  
  2LOZ


• PubMed Abstract: 
  

The protein deleted in liver cancer 1 (DLC1) interacts with the tensin family of focal adhesion proteins to play a role as a tumor suppressor in a wide spectrum of human cancers. This interaction has been proven to be crucial to the oncogenic inhibitory capacity and focal adhesion localization of DLC1. The phosphotyrosine binding (PTB) domain of tensin2 predominantly interacts with a novel site on DLC1, not the canonical NPXY motif. In this study, we characterized this interaction biochemically and determined the complex structure of tensin2 PTB domain with DLC1 peptide by NMR spectroscopy. Our HADDOCK-derived complex structure model elucidates the molecular mechanism by which tensin2 PTB domain recognizes DLC1 peptide and reveals a PTB-peptide binding mode that is unique in that peptide occupies the binding site opposite to the canonical NPXY motif interaction site with the peptide utilizing a non-canonical binding motif to bind in an extended conformation and that the N-terminal helix, which is unique to some Shc- and Dab-like PTB domains, is required for binding. Mutations of crucial residues defined for the PTB-DLC1 interaction affected the co-localization of DLC1 and tensin2 in cells and abolished DLC1-mediated growth suppression of hepatocellular carcinoma cells. This tensin2 PTB-DLC1 peptide complex with a novel binding mode extends the versatile binding repertoire of the PTB domains in mediating diverse cellular signaling pathways as well as provides a molecular and structural basis for better understanding the tumor-suppressive activity of DLC1 and tensin2.

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Organizational Affiliation: 

Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, 999077 Hong Kong, China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tensin-like C1 domain-containing phosphatase	A	147	Homo sapiens	Mutation(s): 0  Gene Names: TENC1, TNS2, KIAA1075 EC: 3.1.3 (PDB Primary Data), 3.1.3.48 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q63HR2 (Homo sapiens) Explore Q63HR2  Go to UniProtKB:  Q63HR2
PHAROS:  Q63HR2 GTEx:  ENSG00000111077

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Rho GTPase-activating protein 7	B	14	Homo sapiens	Mutation(s): 0  Gene Names: DLC1, ARHGAP7, KIAA1723, STARD12
UniProt & NIH Common Fund Data Resources
Find proteins for Q96QB1 (Homo sapiens) Explore Q96QB1  Go to UniProtKB:  Q96QB1
PHAROS:  Q96QB1 GTEx:  ENSG00000164741

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the least restraint violations 
• OLDERADO: 2LOZ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-01-29 
• Released Date: 2012-06-06 
Deposition Author(s): Liu, C., Chen, L., Zhu, G.

Revision History  

• Version 1.0: 2012-06-06
  Type: Initial release
  
• Version 1.1: 2020-01-01
  Changes: Data collection, Database references