Solution structure of GspC-HR of typeII secretion system

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Solution Structure of Homology Region (HR) Domain of Type II Secretion System.

Gu, S.Kelly, G.Wang, X.Frenkiel, T.Shevchik, V.E.Pickersgill, R.W.

(2012) J Biol Chem 287: 9072-9080

  • DOI: https://doi.org/10.1074/jbc.M111.300624
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The type II secretion system of Gram-negative bacteria is important for bacterial pathogenesis and survival; it is composed of 12 mostly multimeric core proteins, which build a sophisticated secretion machine spanning both bacterial membranes. OutC is the core component of the inner membrane subcomplex thought to be involved in both recognition of substrate and interaction with the outer membrane secretin OutD. Here, we report the solution structure of the HR domain of OutC and explore its interaction with the secretin. The HR domain adopts a β-sandwich-like fold consisting of two β-sheets each composed of three anti-parallel β-strands. This structure is strikingly similar to the periplasmic region of PilP, an inner membrane lipoprotein from the type IV pilus system highlighting the common evolutionary origin of these two systems and showing that all the core components of the type II secretion system have a structural or sequence ortholog within the type IV pili system. The HR domain is shown to interact with the N0 domain of the secretin. The importance of this interaction is explored in the context of the functional secretion system.

  • Organizational Affiliation

    School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
General secretion pathway protein C104Dickeya dadantii 3937Mutation(s): 0 
Gene Names: outCDda3937_02414
Find proteins for Q01564 (Dickeya dadantii (strain 3937))
Explore Q01564 
Go to UniProtKB:  Q01564
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01564
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-25
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Database references