3KG5 Protein Binding date Oct 28, 2009
title Crystal Structure Of Human Ig-Beta Homodimer
authors S.Radaev, P.D.Sun
compound source
Molecule: B-Cell Antigen Receptor Complex-Associated Protei Chain;
Chain: A, B
Fragment: Extracellular Domain
Synonym: Ig-Beta, B-Cell-Specific Glycoprotein B29, Immunog Associated B29 Protein;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: B29, Cd79b, Igb
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: P 41 3 2
R_factor 0.181 R_Free 0.263
length a length b length c angle alpha angle beta angle gamma
129.800 129.800 129.800 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.20 Å
note 3KG5 is a representative structure
A, B

Primary referenceStructural and functional studies of Igalphabeta and its assembly with the B cell antigen receptor., Radaev S, Zou Z, Tolar P, Nguyen K, Nguyen A, Krueger PD, Stutzman N, Pierce S, Sun PD, Structure. 2010 Aug 11;18(8):934-43. PMID:20696394
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (40 Kb) [Save to disk]
  • Biological Unit Coordinates (3kg5.pdb1.gz) 35 Kb
  • Biological Unit Coordinates (3kg5.pdb2.gz) 19 Kb
  • Biological Unit Coordinates (3kg5.pdb3.gz) 18 Kb
  • CSU: Contacts of Structural Units for 3KG5
  • Structure Factors (71 Kb)
  • Retrieve 3KG5 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3KG5 from S2C, [Save to disk]
  • Re-refined 3kg5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3KG5 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 3KG5
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 3KG5, from MSDmotif at EBI
  • Fold representative 3kg5 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3kg5_A] [3kg5] [3kg5_B]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 3KG5: [IG ] by SMART
  • Other resources with information on 3KG5
  • Community annotation for 3KG5 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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