Annotations: 4RKN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	KAsynt_C_assoc	e4rknD1	A: a/b three-layered sandwiches	X: Type II ABC importer transmembrane domain fold	H: Type II ABC importer transmembrane domain fold	T: Type II ABC importer transmembrane domain fold	F: KAsynt_C_assoc	ECOD (v294.1)
C	MMS1_N	e4rknC1	A: a/b three-layered sandwiches	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: MMS1_N	ECOD (v294.1)
B		e4rknB1	A: a/b three-layered sandwiches	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F:	ECOD (v294.1)
A	Amidase_2	e4rknA1	A: a/b three-layered sandwiches	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: Amidase_2	ECOD (v294.1)

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 tetrapyrrole binding heme 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 tetrapyrrole binding heme binding identical protein binding protein binding	sulfur compound biosynthetic process biosynthetic 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 sulfur compound biosynthetic process biosynthetic 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	cellular anatomical structure periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR051829	Multiheme_Cytochr_ET	Unknown
A, B, C, D	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily
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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.