Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.98 kDa 
• Atom Count: 615 
• Modelled Residue Count: 76 
• Deposited Residue Count: 79 
• Unique protein chains: 1

1PKS

STRUCTURE OF THE PI3K SH3 DOMAIN AND ANALYSIS OF THE SH3 FAMILY

• PDB DOI: 10.2210/pdb1PKS/pdb

• Classification: PHOSPHOTRANSFERASE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1994-03-07 Released: 1994-05-31 
• Deposition Author(s): Koyama, S., Yu, H., Dalgarno, D.C., Shin, T.B., Zydowsky, L.D., Schreiber, S.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Structure of the PI3K SH3 domain and analysis of the SH3 family.

Koyama, S., Yu, H., Dalgarno, D.C., Shin, T.B., Zydowsky, L.D., Schreiber, S.L.

(1993) Cell 72: 945-952

• PubMed: 7681364 
• DOI: 10.1016/0092-8674(93)90582-b
• Primary Citation of Related Structures:  
  1PKS, 1PKT


• PubMed Abstract: 
  

Src homology 3 (SH3) domains, which are found in many proteins involved in intracellular signal transduction, mediate specific protein-protein interactions. The three-dimensional structure of the SH3 domain in the p85 subunit of the phosphatidylinositol 3-kinase (PI3K) has been determined by multidimensional NMR methods. The molecule consists of four short helices, two beta turns, and two antiparallel beta sheets. The beta sheets are highly similar to corresponding regions in the SH3 domain of the tyrosine kinase Src, even though the sequence identity of the two domains is low. There is a unique 15 amino acid insert in PI3K that contains three short helices. There are substantial differences in the identity of the amino acids that make up the receptor site of SH3 domains. The results suggest that while the overall structures of the binding sites in the PI3K and Src SH3 domains are similar, their ligand binding properties may differ.

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Related Citations: 

• 1H and 15N Assignments and Secondary Structure of the Pi3K SH3 Domain
  Koyama, S., Yu, H., Dalgarno, D.C., Shin, T.B., Zydowsky, L.D., Schreiber, S.L.
  (1993) FEBS Lett 324: 93

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Organizational Affiliation: 

Department of Chemistry, Harvard University, Cambridge, Massachusetts 02138.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PHOSPHATIDYLINOSITOL 3-KINASE P85-ALPHA SUBUNIT SH3 DOMAIN	A	79	Homo sapiens	Mutation(s): 0  Gene Names: PIK3R1, GRB1 EC: 2.7.1.137
UniProt & NIH Common Fund Data Resources
Find proteins for P27986 (Homo sapiens) Explore P27986  Go to UniProtKB:  P27986
PHAROS:  P27986 GTEx:  ENSG00000145675

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 
• OLDERADO: 1PKS Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1994-03-07 
• Released Date: 1994-05-31 
Deposition Author(s): Koyama, S., Yu, H., Dalgarno, D.C., Shin, T.B., Zydowsky, L.D., Schreiber, S.L.

Revision History  

• Version 1.0: 1994-05-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other