Annotations: 2XSJ

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d2xsjc_	Alpha and beta proteins (a+b)	DsrC, the gamma subunit of dissimilatory sulfite reductase	DsrC, the gamma subunit of dissimilatory sulfite reductase	DsrC, the gamma subunit of dissimilatory sulfite reductase	automated matches	(Desulfomicrobium norvegicum ) [TaxId: 52561 ],	SCOPe (2.08)
F	d2xsjf_	Alpha and beta proteins (a+b)	DsrC, the gamma subunit of dissimilatory sulfite reductase	DsrC, the gamma subunit of dissimilatory sulfite reductase	DsrC, the gamma subunit of dissimilatory sulfite reductase	automated matches	(Desulfomicrobium norvegicum ) [TaxId: 52561 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2 Family	DsrC the gamma subunit of dissimilatory sulfite reductase	8081309	4003436	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	DsrC the gamma subunit of dissimilatory sulfite reductase	8081310	3000863	SCOP2 (2022-06-29)
F	SCOP2B Superfamily	DsrC the gamma subunit of dissimilatory sulfite reductase	8081310	3000863	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	dsrA	e2xsjA9	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: dsrA	ECOD (1.6)
A	NIR_SIR_ferr	e2xsjA1	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: NIR_SIR_ferr	ECOD (1.6)
A	NIR_SIR	e2xsjA8	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: NIR_SIR	ECOD (1.6)
D	dsrA	e2xsjD9	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: dsrA	ECOD (1.6)
D	NIR_SIR_ferr	e2xsjD1	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: NIR_SIR_ferr	ECOD (1.6)
D	NIR_SIR	e2xsjD8	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: NIR_SIR	ECOD (1.6)
B	Fer4_21_1	e2xsjB8	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
B	NIR_SIR_ferr	e2xsjB1	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: NIR_SIR_ferr	ECOD (1.6)
B	NIR_SIR	e2xsjB9	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: NIR_SIR	ECOD (1.6)
E	Fer4_21_1	e2xsjE8	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
E	NIR_SIR_ferr	e2xsjE1	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: NIR_SIR_ferr	ECOD (1.6)
E	NIR_SIR	e2xsjE9	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: NIR_SIR	ECOD (1.6)
C	DsrC	e2xsjC1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: DsrC	ECOD (1.6)
F	DsrC	e2xsjF1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: DsrC	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.140.1420	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
A	3.30.70.2500	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
A	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)
A	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
D	6.10.140.1420	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
D	3.30.70.2500	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
D	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)
D	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
B	3.30.70.3340	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
B	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)
B	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
E	3.30.70.3340	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
E	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)
E	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
C	3.30.1420.10	Alpha Beta	2-Layer Sandwich	Dissimilatory Siroheme-sulfite Reductase	Chain: A	CATH (4.3.0)
C	1.10.10.370	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	DsrC protein, C-terminal domain	CATH (4.3.0)
F	3.30.1420.10	Alpha Beta	2-Layer Sandwich	Dissimilatory Siroheme-sulfite Reductase	Chain: A	CATH (4.3.0)
F	1.10.10.370	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	DsrC protein, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D	PF01077	Nitrite and sulphite reductase 4Fe-4S domain (NIR_SIR)	Nitrite and sulphite reductase 4Fe-4S domain	-	Family
B, E	PF03460	Nitrite/Sulfite reductase ferredoxin-like half domain (NIR_SIR_ferr)	Nitrite/Sulfite reductase ferredoxin-like half domain	-	Repeat
B, E	PF01077	Nitrite and sulphite reductase 4Fe-4S domain (NIR_SIR)	Nitrite and sulphite reductase 4Fe-4S domain	-	Family
C, F	PF04358	DsrC like protein (DsrC)	DsrC like protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D	SULFITE REDUCTASE ALPHA SUBUNIT	oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity dissimilatory sulfite reductase activity catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding ion binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity dissimilatory sulfite reductase activity catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding ion binding metal ion binding	-	-
B, E	SULFITE REDUCTASE BETA SUBUNIT	oxidoreductase activity catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding ion binding metal ion binding	-	-
C, F	SULFUR RELAY PROTEIN, TUSE/DSRC/DSVC FAMILY	cation binding ion binding binding metal ion binding small molecule binding	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D	IPR006067	Nitrite/sulphite reductase 4Fe-4S domain	Domain
A, D	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
A, D	IPR045854	Nitrite and sulphite reductase 4Fe-4S domain-like superfamily	Homologous Superfamily
A, D	IPR036136	Nitrite/Sulfite reductase ferredoxin-like domain superfamily	Homologous Superfamily
A, D	IPR045169	Nitrite and sulphite reductase 4Fe-4S domain containing protein	Family
A, D	IPR011806	Sulphite reductase, dissimilatory-type alpha subunit	Family
B, E	IPR006067	Nitrite/sulphite reductase 4Fe-4S domain	Domain
B, E	IPR005117	Nitrite/Sulfite reductase ferredoxin-like domain	Domain
B, E	IPR045854	Nitrite and sulphite reductase 4Fe-4S domain-like superfamily	Homologous Superfamily
B, E	IPR036136	Nitrite/Sulfite reductase ferredoxin-like domain superfamily	Homologous Superfamily
C, F	IPR043163	DsrC-like protein, N-terminal domain	Homologous Superfamily
C, F	IPR025526	DsrC-like domain superfamily	Homologous Superfamily
C, F	IPR042072	DsrC-like protein, C-terminal domain	Homologous Superfamily
C, F	IPR007453	Sulphur transfer protein DsrC/TusE	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.