Biological Assembly 1  

 3D View: Structure | Electron Density

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

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

Macromolecule Content

• Total Structure Weight: 18.33 kDa 
• Atom Count: 1109 
• Residue Count: 132 
• Unique protein chains: 2

2HMH

Crystal structure of SOCS3 in complex with gp130(pTyr757) phosphopeptide.

• DOI: 10.2210/pdb2HMH/pdb

• Classification: Cytokine Regulator
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2006-07-11 Released: 2006-08-15 
• Deposition Author(s): Bergamin, E., Wu, J., Hubbard, S.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.291 
• R-Value Work: 0.242 
• R-Value Observed: 0.244 

Literature

Structural basis for phosphotyrosine recognition by suppressor of cytokine signaling-3.

Bergamin, E., Wu, J., Hubbard, S.R.

(2006) Structure 14: 1285-1292

• PubMed: 16905102 
• DOI: 10.1016/j.str.2006.06.011
• Primary Citation of Related Structures:  
  2HMH


• PubMed Abstract: 
  

Suppressor of cytokine signaling (SOCS) proteins are indispensable negative regulators of cytokine-stimulated Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathways. SOCS proteins (SOCS1-7 and CIS) consist of a variable N-terminal region, a central Src homology-2 (SH2) domain, and a C-terminal SOCS box. The N-terminal region in SOCS1 and SOCS3 includes the so-called kinase inhibitory region that has been shown to inhibit the catalytic activity of JAK2. Here, we present a crystal structure at 2.0 A resolution of the N-terminally extended SH2 domain of SOCS3 in complex with its phosphopeptide target on the cytokine receptor gp130. The structure reveals that major insertions in the EF and BG loops of the SOCS3 SH2 domain are responsible for binding to gp130 with high affinity and specificity. In addition, the structure provides insights into the possible mechanisms by which SOCS3 and SOCS1 inhibit JAK2 kinase activity.

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Organizational Affiliation: 

Structural Biology Program, Skirball Institute of Biomolecular Medicine and Department of Pharmacology, New York University School of Medicine, New York, New York 10016, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Suppressor of cytokine signaling 3	A	152	Mus musculus	Mutation(s): 2  Gene Names: Socs3
Find proteins for O35718 (Mus musculus) Explore O35718  Go to UniProtKB:  O35718

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-6 receptor beta chain	B	11	N/A	Mutation(s): 1
Find proteins for Q00560 (Mus musculus) Explore Q00560  Go to UniProtKB:  Q00560
NIH Common Fund Data Resources
IMPC:  MGI:96560

Small Molecules

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CAS	A	L-PEPTIDE LINKING	C5 H12 As N O2 S		CYS
PTR	B	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.291 
• R-Value Work: 0.242 
• R-Value Observed: 0.244 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.918	α = 90
b = 94.708	β = 90
c = 69.922	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-07-11 
• Released Date: 2006-08-15 
Deposition Author(s): Bergamin, E., Wu, J., Hubbard, S.R.

Revision History 

• Version 1.0: 2006-08-15
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-08-16
  Changes: Source and taxonomy