4LMH

Crystal structure of the outer membrane decaheme cytochrome OmcA

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	decahem_SO1788_1st_1	e4lmhA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: decahem_SO1788_1st_1	ECOD (1.6)
A	decahem_SO1788_3rd	e4lmhA2	A: few secondary structure elements	X: Multiheme cytochromes	H: Outer membrane cytochrome MtrF (From Topology)	T: Outer membrane cytochrome MtrF	F: decahem_SO1788_3rd	ECOD (1.6)
B	decahem_SO1788_1st_1	e4lmhB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: decahem_SO1788_1st_1	ECOD (1.6)
B	decahem_SO1788_3rd	e4lmhB2	A: few secondary structure elements	X: Multiheme cytochromes	H: Outer membrane cytochrome MtrF (From Topology)	T: Outer membrane cytochrome MtrF	F: decahem_SO1788_3rd	ECOD (1.6)
C	decahem_SO1788_1st_1	e4lmhC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: decahem_SO1788_1st_1	ECOD (1.6)
C	decahem_SO1788_3rd	e4lmhC2	A: few secondary structure elements	X: Multiheme cytochromes	H: Outer membrane cytochrome MtrF (From Topology)	T: Outer membrane cytochrome MtrF	F: decahem_SO1788_3rd	ECOD (1.6)
D	decahem_SO1788_1st_1	e4lmhD4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: decahem_SO1788_1st_1	ECOD (1.6)
D	decahem_SO1788_3rd	e4lmhD2	A: few secondary structure elements	X: Multiheme cytochromes	H: Outer membrane cytochrome MtrF (From Topology)	T: Outer membrane cytochrome MtrF	F: decahem_SO1788_3rd	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF22113	Outer membrane cytochrome MtrC/MtrF-like, domains II/IV (Mtrc-MtrF_II-IV_dom)	Outer membrane cytochrome MtrC/MtrF-like, domains II/IV	This entry includes decaheme cytochrome c component MtrC from the MtrCAB complex and its homologues MtrF (which is part of the MtrFDE complex) and OmcA. In Shewanella oneidensis, these proteins are located at the bacterial cell surface at the termini ...	This entry includes decaheme cytochrome c component MtrC from the MtrCAB complex and its homologues MtrF (which is part of the MtrFDE complex) and OmcA. In Shewanella oneidensis, these proteins are located at the bacterial cell surface at the termini of trans-outer-membrane electron transfer conduits and allow the utilization of extracellular mineral forms of iron and manganese as respiratory electron acceptors [5,6]. MtrC/MtrF/OmcA consist of four domains: domain I and III containing seven antiparallel beta-strands in an extended Greek key topology; domains II and IV each bind five tightly packed hemes covalently attached to the Cys residues of the five CXXCH motifs in each domain and form the central core, flanked by domains I (Pfam:PF22111) and III [5,6]. This entry represents domains II and IV.	Domain
A, B, C, D	PF22112	OmcA-like N-terminal domain (OmcA-like_N)	OmcA-like N-terminal domain	This entry represents the N-terminal domain of OmcA (Swiss:Q8EG33) from Shewanella oneidensis and similar porteins. OmcA is a decaheme c-type cytochrome homologue of MtrF and MtrC [1-5]. OmcA may be able to receive electrons from the MtrCAB or MtrFDE ...	This entry represents the N-terminal domain of OmcA (Swiss:Q8EG33) from Shewanella oneidensis and similar porteins. OmcA is a decaheme c-type cytochrome homologue of MtrF and MtrC [1-5]. OmcA may be able to receive electrons from the MtrCAB or MtrFDE complexes through the interaction with MtrC or MtrF [1]. OmcA, MtrF and MtrC are involved in the use of manganese and iron as terminal electron acceptors.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Extracellular iron oxide respiratory system surface decaheme cytochrome c component OmcA	cation binding ion binding binding metal ion binding small molecule binding	cellular response to stimulus cellular response to iron ion cellular response to metal ion cellular response to chemical stimulus response to stimulus response to metal ion response to chemical response to iron ion cellular process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR054336	OmcA-like, N-terminal domain	Domain
A, B, C, D	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily
A, B, C, D	IPR020014	Decahaem cytochrome, c-type, OmcA/MtrC	Family
A, B, C, D	IPR054337	Outer membrane cytochrome MtrC/MtrF-like, domains II/IV	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.