Solution structure of the Albumin binding domain of Streptococcal Protein G

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Structure, Specificity, and Mode of Interaction for Bacterial Albumin-Binding Modules

Johansson, M.Frick, I.Nilsson, H.Kraulis, P.Hober, S.Jonasson, P.Linhult, M.Nygren, P.Uhlen, M.Bjorck, L.Drakenberg, T.Forsen, S.Wikstrom, M.

(2002) J Biol Chem 277: 8114

  • DOI: https://doi.org/10.1074/jbc.M109943200
  • Primary Citation of Related Structures:  
    1GJS, 1GJT

  • PubMed Abstract: 

    We have determined the solution structure of an albumin binding domain of protein G, a surface protein of group C and G streptococci. We find that it folds into a left handed three-helix bundle similar to the albumin binding domain of protein PAB from Peptostreptococcus magnus. The two domains share 59% sequence identity, are thermally very stable, and bind to the same site on human serum albumin. The albumin binding site, the first determined for this structural motif known as the GA module, comprises residues spanning the first loop to the beginning of the third helix and includes the most conserved region of GA modules. The two GA modules have different affinities for albumin from different species, and their albumin binding patterns correspond directly to the host specificity of C/G streptococci and P. magnus, respectively. These studies of the evolution, structure, and binding properties of the GA module emphasize the power of bacterial adaptation and underline ecological and medical problems connected with the use of antibiotics.

  • Organizational Affiliation

    Department of Biophysical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden. maria.johansson@bpc.lu.se

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
IMMUNOGLOBULIN G BINDING PROTEIN G65Streptococcus sp.Mutation(s): 0 
Find proteins for P19909 (Streptococcus sp. group G)
Explore P19909 
Go to UniProtKB:  P19909
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19909
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

View Full Validation Report

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2001-08-09
    Type: Initial release
  • Version 1.1: 2015-04-08
    Changes: Derived calculations, Structure summary, Version format compliance
  • Version 1.2: 2024-05-15
    Changes: Data collection, Database references, Other