4PGR

Crystal structure of YetJ from Bacillus Subtilis at pH 8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural basis for a pH-sensitive calcium leak across membranes.

Chang, Y.Bruni, R.Kloss, B.Assur, Z.Kloppmann, E.Rost, B.Hendrickson, W.A.Liu, Q.

(2014) Science 344: 1131-1135

  • DOI: https://doi.org/10.1126/science.1252043
  • Primary Citation of Related Structures:  
    4PGR, 4PGS, 4PGU, 4PGV, 4PGW

  • PubMed Abstract: 

    Calcium homeostasis balances passive calcium leak and active calcium uptake. Human Bax inhibitor-1 (hBI-1) is an antiapoptotic protein that mediates a calcium leak and is representative of a highly conserved and widely distributed family, the transmembrane Bax inhibitor motif (TMBIM) proteins. Here, we present crystal structures of a bacterial homolog and characterize its calcium leak activity. The structure has a seven-transmembrane-helix fold that features two triple-helix sandwiches wrapped around a central C-terminal helix. Structures obtained in closed and open conformations are reversibly interconvertible by change of pH. A hydrogen-bonded, pKa (where Ka is the acid dissociation constant)-perturbed pair of conserved aspartate residues explains the pH dependence of this transition, and biochemical studies show that pH regulates calcium influx in proteoliposomes. Homology models for hBI-1 provide insights into TMBIM-mediated calcium leak and cytoprotective activity.


  • Organizational Affiliation

    New York Consortium on Membrane Protein Structure, New York Structural Biology Center, New York, NY 10027, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Uncharacterized protein YetJ217Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: yetJBSU07200
Membrane Entity: Yes 
UniProt
Find proteins for O31539 (Bacillus subtilis (strain 168))
Explore O31539 
Go to UniProtKB:  O31539
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO31539
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.547α = 90
b = 61.547β = 90
c = 289.563γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM095315

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-04
    Type: Initial release
  • Version 1.1: 2014-06-18
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Advisory, Author supporting evidence, Database references, Derived calculations, Other, Source and taxonomy
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence
  • Version 1.4: 2023-12-27
    Changes: Data collection, Database references, Refinement description