2MVH

Structure determination of Stage V sporulation protein M (SpoVM)

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural basis for the geometry-driven localization of a small protein.

Gill, R.L., Castaing, J.P., Hsin, J., Tan, I.S., Wang, X., Huang, K.C., Tian, F., Ramamurthi, K.S.

(2015) Proc Natl Acad Sci U S A 112: E1908-E1915

  • DOI: 10.1073/pnas.1423868112
  • Primary Citation of Related Structures:  
    2MVH, 2MVJ

  • PubMed Abstract: 

    • In bacteria, certain shape-sensing proteins localize to differently curved membranes. During sporulation in Bacillus subtilis, the only convex (positively curved) surface in the cell is the forespore, an approximately spherical internal organelle. Previously, we demonstrated that SpoVM localizes to the forespore by preferentially adsorbing onto slightly convex membranes ...

    In bacteria, certain shape-sensing proteins localize to differently curved membranes. During sporulation in Bacillus subtilis, the only convex (positively curved) surface in the cell is the forespore, an approximately spherical internal organelle. Previously, we demonstrated that SpoVM localizes to the forespore by preferentially adsorbing onto slightly convex membranes. Here, we used NMR and molecular dynamics simulations of SpoVM and a localization mutant (SpoVM(P9A)) to reveal that SpoVM's atypical amphipathic α-helix inserts deeply into the membrane and interacts extensively with acyl chains to sense packing differences in differently curved membranes. Based on binding to spherical supported lipid bilayers and Monte Carlo simulations, we hypothesize that SpoVM's membrane insertion, along with potential cooperative interactions with other SpoVM molecules in the lipid bilayer, drives its preferential localization onto slightly convex membranes. Such a mechanism, which is distinct from that used by high curvature-sensing proteins, may be widely conserved for the localization of proteins onto the surface of cellular organelles.

    Organizational Affiliation: 

    Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892; ramamurthiks@mail.nih.gov kchuang@stanford.edu ftian@psu.edu.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Stage V sporulation protein MA26Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: spoVM, BSU15810
Membrane Entity: Yes 
UniProt
Find proteins for P37817 (Bacillus subtilis (strain 168))
Explore P37817 
Go to UniProtKB:  P37817
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP37817
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MVH Olderado

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2014-10-06 
  • Released Date: 2015-04-01 
    • Deposition Author(s): Tian, F., Gill Jr., R.

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-01
    Type: Initial release
  • Version 1.1: 2015-04-15
    Changes: Database references
  • Version 1.2: 2015-04-29
    Changes: Database references