Database accession: MF7000843
Name: Hydroperoxide resistance protein (Burkholderia pseudomallei)
PDB ID: 6uhw
Experimental method: NMR
Assembly: Homodimer
Source organism: Burkholderia pseudomallei
Primary publication of the structure:
Buchko GW, Hewitt SN, Napuli AJ, Van Voorhis WC, Myler PJ
Backbone and side chain (1)H, (13)C, and (15)N NMR assignments for the organic hydroperoxide resistance protein (Ohr) from Burkholderia pseudomallei.
(2009) Biomol NMR Assign 3: 163-6
PMID: 19888681
Abstract:
Burkholderia pseudomallei is a NIAID Category B microorganism responsible for melioidosis. Here we report backbone and side chain NMR assignments for the 139-residue, homodimeric, organic hydroperoxide resistance protein (Ohr) from this organism.
Annotations from the GeneOntology database. Only terms that fit at least two of the interacting proteins are shown.Molecular function: not assigned
Biological process:
response to oxidative stress response to oxidative stress
Cellular component: not assigned
Structural annotations of the participating protein chains.Entry contents: 2 distinct polypeptide molecules
Chains: A, B
Notes: All chains according to the most probable oligomerization state stored in PDBe were considered.
Number of unique protein segments: 1
Name: Organic hydroperoxide resistance protein
Source organism: Burkholderia pseudomallei
Length: 139 residues
Sequence:Sequence according to the corresponding UniProt protein segmentMNILYKTAATSTGGRDGRATSHDQKLDVKLSAPRELGGAGAEGTNPEQLFAAGYSACFLSAMKFVAGQNKQTLPADTTVTAEVGIGPNEEGGFALDVELRVALPGLDAAAAKTLVDRAHHVCPYSNATRNNVAVRLVVA
UniProtKB AC: Q3JK82 (positions: 1-139)
Coverage: 100%
Name: Organic hydroperoxide resistance protein
Source organism: Burkholderia pseudomallei
Length: 139 residues
Sequence:Sequence according to the corresponding UniProt protein segmentMNILYKTAATSTGGRDGRATSHDQKLDVKLSAPRELGGAGAEGTNPEQLFAAGYSACFLSAMKFVAGQNKQTLPADTTVTAEVGIGPNEEGGFALDVELRVALPGLDAAAAKTLVDRAHHVCPYSNATRNNVAVRLVVA
UniProtKB AC: Q3JK82 (positions: 1-139)
Coverage: 100%
Evidence demonstrating that the participating proteins are unstructured prior to the interaction and their folding is coupled to binding. Representative domain in related structures: OsmC-like protein
Evidence level: Direct evidence
Evidence coverage: The full structure participates in mutual synergistic folding.
Complex Evidence:
Ohr is a tightly folded homodimer with a large buried hydrophobic surface area. The two monomers are tightly wrapped around each other in a head-to-tail orientation. Dimerization is dominated by helix–helix packing interactions of two long helices at the center of the hydrophobic core of the dimeric enzyme. Also, each β-sheet is composed of six strands, three from one monomer and three from the other (beta sheet augmentation). The hydrophobic core, as well as the surrounding β-sheets, are generated by combining elements of both monomers, therefore, it is clear that the two polypeptide chains have to fold together to form active Ohr, and that each monomer would individually be unstable. The two active sites are also located at the dimer interface (PMID:12485986).
Chain A:
N/A
Chain B:
N/A
Surface and contacts features:
Structures from the PDB that contain the same number of proteins, and the proteins from the two structures show a sufficient degree of pairwise similarity, i.e. they belong to the same UniRef90 cluster (the full proteins exhibit at least 90% sequence identity) and convey roughly the same region to their respective interactions (the two regions from the two proteins share a minimum of 70% overlap). Download the CIF file (.cif)
Download this entry's XML file (.xml)
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