7NP8

Crystal structure of the Coenzyme F420-dependent sulfite reductase from Methanocaldococcus jannaschii at 2.3-A resolution

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)
B	PF04422,PF04432	e7np8B1	A: alpha arrays	X: F420-reducing hydrogenase subunit beta (From Topology)	H: F420-reducing hydrogenase subunit beta (From Topology)	T: F420-reducing hydrogenase subunit beta	F: PF04422,PF04432	ECOD (1.6)
B	F_UNCLASSIFIED	e7np8B5	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF00037	e7np8B4	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: PF00037	ECOD (1.6)
B	PF03460	e7np8B3	A: a+b two layers	X: Alpha-beta plaits	H: Sulfite reductase, domains 1 and 3 (From Topology)	T: Sulfite reductase, domains 1 and 3	F: PF03460	ECOD (1.6)
B	PF01077	e7np8B2	A: a+b three layers	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: PF01077	ECOD (1.6)
C	PF04422,PF04432	e7np8C1	A: alpha arrays	X: F420-reducing hydrogenase subunit beta (From Topology)	H: F420-reducing hydrogenase subunit beta (From Topology)	T: F420-reducing hydrogenase subunit beta	F: PF04422,PF04432	ECOD (1.6)
C	F_UNCLASSIFIED	e7np8C4	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: F_UNCLASSIFIED	ECOD (1.6)
C	PF03460	e7np8C3	A: a+b two layers	X: Alpha-beta plaits	H: Sulfite reductase, domains 1 and 3 (From Topology)	T: Sulfite reductase, domains 1 and 3	F: PF03460	ECOD (1.6)
C	PF01077	e7np8C2	A: a+b three layers	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: PF01077	ECOD (1.6)
A	PF04422,PF04432	e7np8A1	A: alpha arrays	X: F420-reducing hydrogenase subunit beta (From Topology)	H: F420-reducing hydrogenase subunit beta (From Topology)	T: F420-reducing hydrogenase subunit beta	F: PF04422,PF04432	ECOD (1.6)
A	F_UNCLASSIFIED	e7np8A4	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF03460	e7np8A3	A: a+b two layers	X: Alpha-beta plaits	H: Sulfite reductase, domains 1 and 3 (From Topology)	T: Sulfite reductase, domains 1 and 3	F: PF03460	ECOD (1.6)
A	PF01077	e7np8A2	A: a+b three layers	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: PF01077	ECOD (1.6)
D	PF04422,PF04432	e7np8D1	A: alpha arrays	X: F420-reducing hydrogenase subunit beta (From Topology)	H: F420-reducing hydrogenase subunit beta (From Topology)	T: F420-reducing hydrogenase subunit beta	F: PF04422,PF04432	ECOD (1.6)
D	F_UNCLASSIFIED	e7np8D4	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: F_UNCLASSIFIED	ECOD (1.6)
D	PF03460	e7np8D3	A: a+b two layers	X: Alpha-beta plaits	H: Sulfite reductase, domains 1 and 3 (From Topology)	T: Sulfite reductase, domains 1 and 3	F: PF03460	ECOD (1.6)
D	PF01077	e7np8D2	A: a+b three layers	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 (From Topology)	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: PF01077	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF03460	Nitrite/Sulfite reductase ferredoxin-like half domain (NIR_SIR_ferr)	Nitrite/Sulfite reductase ferredoxin-like half domain	-	Repeat
A, B, C, D	PF04422	Coenzyme F420 hydrogenase/dehydrogenase, beta subunit N-term (FrhB_FdhB_N)	Coenzyme F420 hydrogenase/dehydrogenase, beta subunit N-term	-	Family
A, B, C, D	PF01077	Nitrite and sulphite reductase 4Fe-4S domain (NIR_SIR)	Nitrite and sulphite reductase 4Fe-4S domain	-	Family
A, B, C, D	PF04432	Coenzyme F420 hydrogenase/dehydrogenase, beta subunit C terminus (FrhB_FdhB_C)	Coenzyme F420 hydrogenase/dehydrogenase, beta subunit C terminus	Coenzyme F420 hydrogenase (EC:1.12.99.1) reduces the low-potential two-electron acceptor coenzyme F420. This family contains the C termini of F420 hydrogenase and dehydrogenase beta subunits [1], [2]. The N terminus of Methanobacterium formicicum fo ...	Coenzyme F420 hydrogenase (EC:1.12.99.1) reduces the low-potential two-electron acceptor coenzyme F420. This family contains the C termini of F420 hydrogenase and dehydrogenase beta subunits [1], [2]. The N terminus of Methanobacterium formicicum formate dehydrogenase beta chain (EC:1.2.1.2, Swiss:P06130) is also a member of this family [3]. This region is often found in association with the 4Fe-4S binding domain, fer4 (Pfam:PF00037).	Domain
A, B, C, D	PF00037	4Fe-4S binding domain (Fer4)	4Fe-4S binding domain	Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Coenzyme F420-dependent sulfite reductase	oxidoreductase activity, acting on CH or CH2 groups, with an iron-sulfur protein as acceptor oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups 7-hydroxymethyl chlorophyll a reductase activity catalytic activity binding organic cyclic compound binding tetrapyrrole binding heme binding iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding oxidoreductase activity, acting on CH or CH2 groups, with an iron-sulfur protein as acceptor oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups 7-hydroxymethyl chlorophyll a reductase activity catalytic activity binding organic cyclic compound binding tetrapyrrole binding heme binding iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding ion binding metal ion binding	organic cyclic compound metabolic process organic substance metabolic process organonitrogen compound metabolic process tetrapyrrole metabolic process chlorophyll metabolic process chlorophyll cycle metabolic process porphyrin-containing compound metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR005117	Nitrite/Sulfite reductase ferredoxin-like domain	Domain
A, B, C, D	IPR045220	Oxidoreductase FRHB/FDHB/HCAR-like	Family
A, B, C, D	IPR007516	Coenzyme F420 hydrogenase/dehydrogenase beta subunit, N-terminal	Domain
A, B, C, D	IPR017900	4Fe-4S ferredoxin, iron-sulphur binding, conserved site	Conserved Site
A, B, C, D	IPR006067	Nitrite/sulphite reductase 4Fe-4S domain	Domain
A, B, C, D	IPR006066	Nitrite/sulphite reductase iron-sulphur/sirohaem-binding site	Binding Site
A, B, C, D	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
A, B, C, D	IPR045854	Nitrite and sulphite reductase 4Fe-4S domain-like superfamily	Homologous Superfamily
A, B, C, D	IPR036136	Nitrite/Sulfite reductase ferredoxin-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR007525	Coenzyme F420 hydrogenase/dehydrogenase beta subunit, C-terminal	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 R01GM133198.