Annotations: 4RKN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	decahem_SO1788_3rd	e4rknB1	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)
A	decahem_SO1788_3rd	e4rknA1	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_3rd	e4rknC1	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_3rd	e4rknD1	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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	MccA	cation binding cuprous ion binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite reductase activity catalytic activity organic cyclic compound binding tetrapyrrole binding cation binding cuprous ion binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite reductase activity catalytic activity organic cyclic compound binding tetrapyrrole binding heme binding identical protein binding protein binding	sulfur compound biosynthetic process biosynthetic process cellular biosynthetic process cellular metabolic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process protein-containing complex organization protein trimerization cellular component organization cellular component biogenesis cellular component assembly sulfur compound biosynthetic process biosynthetic process cellular biosynthetic process cellular metabolic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process protein-containing complex organization protein trimerization cellular component organization cellular component biogenesis cellular component assembly protein homotrimerization protein complex oligomerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis cellular respiration energy derivation by oxidation of organic compounds generation of precursor metabolites and energy anaerobic respiration	periplasmic space cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily
A, B, C, D	IPR051829	Multiheme Cytochrome Electron Transporters	Family
A, B, C, D	IPR032897	Dissimilatory sulfite reductase	Family

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.