1GAB

STRUCTURE OF AN ALBUMIN-BINDING DOMAIN, NMR, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: CONSTRAINT VIOLATIONS 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of the albumin-binding GA module: a versatile bacterial protein domain.

Johansson, M.U.de Chateau, M.Wikstrom, M.Forsen, S.Drakenberg, T.Bjorck, L.

(1997) J.Mol.Biol. 266: 859-865

  • DOI: 10.1006/jmbi.1996.0856
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The albumin-binding GA module is found in a family of surface proteins of different bacterial species. It comprises 45 amino acid residues and represents the first known example of contemporary module shuffling. Using 1H NMR spectroscopy we have dete ...

    The albumin-binding GA module is found in a family of surface proteins of different bacterial species. It comprises 45 amino acid residues and represents the first known example of contemporary module shuffling. Using 1H NMR spectroscopy we have determined the solution structure of the GA module from protein PAB, a protein of the anaerobic human commensal and pathogen Peptostreptococcus magnus. This structure, the first three-dimensional structure of an albumin-binding protein domain described, was shown to be composed of a left-handed three-helix-bundle. Sequence differences between GA modules with different affinities for albumin indicated that a conserved region in the C-terminal part of the second helix and the flexible sequence between helices 2 and 3 could contribute to the albumin-binding activity. The effect on backbone amide proton exchange rates upon binding to albumin support this assumption. The GA module has a fold that is strikingly similar to the immunoglobulin-binding domains of staphylococcal protein A but it shows no resemblance to the fold shared by the immunoglobulin-binding domains of streptococcal protein G and peptostreptococcal protein L. When the gene sequences, binding properties and thermal stability of these four domains are analysed in relation to their global folds an evolutionary pattern emerges. Thus, in the evolution of novel binding properties mutations are allowed only as long as the energetically favourable global fold is maintained.


    Related Citations: 
    • The Ga Module, a Mobile Albumin-Binding Bacterial Domain, Adopts a Three-Helix-Bundle Structure
      Johansson, M.U.,De Chateau, M.,Bjorck, L.,Forsen, S.,Drakenberg, T.,Wikstrom, M.
      (1995) FEBS Lett. 374: 257


    Organizational Affiliation

    Department of Physical Chemistry, Lund University, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN PAB
A
53Finegoldia magnaMutation(s): 0 
Gene Names: pab
Find proteins for Q51911 (Finegoldia magna)
Go to UniProtKB:  Q51911
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: CONSTRAINT VIOLATIONS 
  • Olderado: 1GAB Olderado
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance