2M3U

Solution-state NMR structure of cataract-related human gamma(S)-crystallin point variant G18V


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Preferential and Specific Binding of Human alpha B-Crystallin to a Cataract-Related Variant of gamma S-Crystallin.

Kingsley, C.N.Brubaker, W.D.Markovic, S.Diehl, A.Brindley, A.J.Oschkinat, H.Martin, R.W.

(2013) Structure 21: 2221-2227

  • DOI: 10.1016/j.str.2013.09.017
  • Primary Citation of Related Structures:  2M3T

  • PubMed Abstract: 
  • Transparency in the eye lens is maintained via specific, functional interactions among the structural βγ- and chaperone α-crystallins. Here, we report the structure and α-crystallin binding interface of the G18V variant of human γS-crystallin (γS-G18 ...

    Transparency in the eye lens is maintained via specific, functional interactions among the structural βγ- and chaperone α-crystallins. Here, we report the structure and α-crystallin binding interface of the G18V variant of human γS-crystallin (γS-G18V), which is linked to hereditary childhood-onset cortical cataract. Comparison of the solution nuclear magnetic resonance structures of wild-type and G18V γS-crystallin, both presented here, reveal that the increased aggregation propensity of γS-G18V results from neither global misfolding nor the solvent exposure of a hydrophobic residue but instead involves backbone rearrangement within the N-terminal domain. αB-crystallin binds more strongly to the variant, via a well-defined interaction surface observed via chemical shift differences. In the context of the αB-crystallin structure and the finding that it forms heterogeneous multimers, our structural studies suggest a potential mechanism for cataract formation via the depletion of the finite αB-crystallin population of the lens.


    Organizational Affiliation

    Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-crystallin S
A
178Homo sapiensGene Names: CRYGS (CRYG8)
Find proteins for P22914 (Homo sapiens)
Go to Gene View: CRYGS
Go to UniProtKB:  P22914
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-13
    Type: Initial release
  • Version 1.1: 2013-12-25
    Type: Database references