4BZ4 image
Deposition Date 2013-07-24
Release Date 2014-02-19
Last Version Date 2024-11-13
Entry Detail
PDB ID:
4BZ4
Title:
CorA is a surface-associated copper-binding protein important in Methylomicrobium album BG8 copper acquisition
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
1.60 Å
R-Value Free:
0.18
R-Value Work:
0.15
R-Value Observed:
0.15
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:COPPER-REPRESSIBLE POLYPEPTIDE
Chain IDs:A, B, C, D, E, F
Chain Length:231
Number of Molecules:6
Biological Source:METHYLOMICROBIUM ALBUM BG8
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
KYN A TRP ?
Primary Citation
Cora is a Copper Repressible Surface-Associated Copper(I)-Binding Protein Produced in Methylomicrobium Album Bg8.
Plos One 9 87750 ? (2014)
PMID: 24498370 DOI: 10.1371/JOURNAL.PONE.0087750

Abstact

CorA is a copper repressible protein previously identified in the methanotrophic bacterium Methylomicrobium album BG8. In this work, we demonstrate that CorA is located on the cell surface and binds one copper ion per protein molecule, which, based on X-ray Absorption Near Edge Structure analysis, is in the reduced state (Cu(I)). The structure of endogenously expressed CorA was solved using X-ray crystallography. The 1.6 Å three-dimensional structure confirmed the binding of copper and revealed that the copper atom was coordinated in a mononuclear binding site defined by two histidines, one water molecule, and the tryptophan metabolite, kynurenine. This arrangement of the copper-binding site is similar to that of its homologous protein MopE* from Metylococcus capsulatus Bath, confirming the importance of kynurenine for copper binding in these proteins. Our findings show that CorA has an overall fold similar to MopE, including the unique copper(I)-binding site and most of the secondary structure elements. We suggest that CorA plays a role in the M. album BG8 copper acquisition.

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Primary Citation of related structures