1ZJ8

Structure of Mycobacterium tuberculosis NirA protein

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1zj8a1	Alpha and beta proteins (a+b)	Ferredoxin-like	Nitrite/Sulfite reductase N-terminal domain-like	Duplicated SiR/NiR-like domains 1 and 3	Sulfite reductase NirA, C-terminal domain	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)
A	d1zj8a2	Alpha and beta proteins (a+b)	Ferredoxin-like	Nitrite/Sulfite reductase N-terminal domain-like	Duplicated SiR/NiR-like domains 1 and 3	Sulfite reductase NirA, N-terminal domain	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)
A	d1zj8a3	Alpha and beta proteins (a+b)	Nitrite and sulphite reductase 4Fe-4S domain-like	Nitrite and sulphite reductase 4Fe-4S domain-like	Nitrite and sulphite reductase 4Fe-4S domain-like	Sulfite reductase NirA	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)
B	d1zj8b1	Alpha and beta proteins (a+b)	Ferredoxin-like	Nitrite/Sulfite reductase N-terminal domain-like	Duplicated SiR/NiR-like domains 1 and 3	Sulfite reductase NirA, C-terminal domain	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)
B	d1zj8b2	Alpha and beta proteins (a+b)	Ferredoxin-like	Nitrite/Sulfite reductase N-terminal domain-like	Duplicated SiR/NiR-like domains 1 and 3	Sulfite reductase NirA, N-terminal domain	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)
B	d1zj8b3	Alpha and beta proteins (a+b)	Nitrite and sulphite reductase 4Fe-4S domain-like	Nitrite and sulphite reductase 4Fe-4S domain-like	Nitrite and sulphite reductase 4Fe-4S domain-like	Sulfite reductase NirA	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Duplicated SiR/NiR-like domains 1 and 3	8021042	4001354	SCOP2 (2022-06-29)
A	SCOP2 Family	Duplicated SiR/NiR-like domains 1 and 3	8021043	4001354	SCOP2 (2022-06-29)
A	SCOP2 Family	Nitrite and sulphite reductase 4Fe-4S domain-like	8021045	4001988	SCOP2 (2022-06-29)
A	SCOP2 Family	Nitrite and sulphite reductase 4Fe-4S domain-like	8021046	4001988	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8033422	3001366	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8033423	3001366	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8033425	3000646	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8033426	3000646	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8033426	3000646	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8033423	3001366	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8033425	3000646	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8033422	3001366	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	NIR_SIR_ferr	e1zj8A1	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	e1zj8A3	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	NIR_SIR_ferr	e1zj8B1	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	e1zj8B3	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.480.10	Alpha Beta	Alpha-Beta Complex	Sulfite Reductase Hemoprotein	domain 2	CATH (4.3.0)
A	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)
B	3.90.480.10	Alpha Beta	Alpha-Beta Complex	Sulfite Reductase Hemoprotein	domain 2	CATH (4.3.0)
B	3.30.413.10	Alpha Beta	2-Layer Sandwich	Sulfite Reductase Hemoprotein	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Probable ferredoxin-dependent nitrite reductase NirA	binding organic cyclic compound binding tetrapyrrole binding heme binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, iron-sulfur protein as acceptor sulfite reductase (ferredoxin) activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding binding organic cyclic compound binding tetrapyrrole binding heme binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity sulfite reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, iron-sulfur protein as acceptor sulfite reductase (ferredoxin) activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding ion binding metal ion binding	sulfate assimilation cellular metabolic process sulfur compound metabolic process metabolic process cellular process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol cell periphery external encapsulating structure cell wall peptidoglycan-based cell wall

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR005117	Nitrite/Sulfite reductase ferredoxin-like domain	Domain
A, B	IPR006067	Nitrite/sulphite reductase 4Fe-4S domain	Domain
A, B	IPR006066	Nitrite/sulphite reductase iron-sulphur/sirohaem-binding site	Binding Site
A, B	IPR045854	Nitrite and sulphite reductase 4Fe-4S domain-like superfamily	Homologous Superfamily
A, B	IPR036136	Nitrite/Sulfite reductase ferredoxin-like domain superfamily	Homologous Superfamily

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.