2ZRR

Crystal structure of an immunity protein that contributes to the self-protection of bacteriocin-producing Enterococcus mundtii 15-1A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure and mutagenic analysis of a bacteriocin immunity protein, Mun-im

Jeon, H.J.Noda, M.Matoba, Y.Kumagai, T.Sugiyama, M.

(2009) Biochem.Biophys.Res.Commun. 378: 574-578

  • DOI: 10.1016/j.bbrc.2008.11.093

  • PubMed Abstract: 
  • Bacteriocin-producing lactic acid bacteria (LAB) possess a self-protection factor, which is generally called an immunity protein. In this study, we determine the crystal structure of an immunity protein, designated Mun-im, which was classified into s ...

    Bacteriocin-producing lactic acid bacteria (LAB) possess a self-protection factor, which is generally called an immunity protein. In this study, we determine the crystal structure of an immunity protein, designated Mun-im, which was classified into subgroup B immunity proteins for class IIa bacteriocins. The Mun-im protein takes a left-turning antiparallel four-helix bundle structure with the flexible N- and C-terminal parts. Although the amino acid sequences of the subgroup B immunity proteins are distinguished from those of the subgroup A, the core structure of Mun-im is well-superimposed with that of the subgroup A immunity protein, EntA-im, and the C-terminus of both proteins is flexible. However, the C-terminus of Mun-im is obviously shorter than that of the subgroup A. We found through mutagenic study of Mun-im that the C-terminus and the K86 residue on the helix 4 in the immunity protein molecule are important for expression of the immunity activity on the subgroup B immunity proteins.


    Organizational Affiliation

    Department of Molecular Microbiology and Biotechnology, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mundticin KS immunity protein
A
118Enterococcus mundtiiMutation(s): 0 
Gene Names: orf8
Find proteins for B9A7V6 (Enterococcus mundtii)
Go to UniProtKB:  B9A7V6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.228 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 28.710α = 90.00
b = 73.780β = 90.00
c = 94.760γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
HKL-2000data scaling
BSSdata collection
HKL-2000data reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-02-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance