Annotations: 1PQ4

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1pq4b_	Alpha and beta proteins (a/b)	Chelatase-like	'Helical backbone' metal receptor	TroA-like	Periplasmic zinc binding protein ZnuA	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
A	d1pq4a_	Alpha and beta proteins (a/b)	Chelatase-like	'Helical backbone' metal receptor	TroA-like	Periplasmic zinc binding protein ZnuA	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	TroA-like	8026694	4000845	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Helical backbone metal receptor	8039073	3001679	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	Helical backbone metal receptor	8039073	3001679	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)
B	PrpR_N	e1pq4B1	A: a/b three-layered sandwiches	X: Spectrin repeat-like	H: TIM barrels	T: TIM barrels	F: PrpR_N	ECOD (v294.1)
A	ZnuA	e1pq4A1	A: a/b three-layered sandwiches	X: Thioredoxin-like	H: Nucleic acid-binding protein	T: Chelatase-like	F: ZnuA	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.1980	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nitrogenase molybdenum iron protein domain	CATH (4.3.0)
A	3.40.50.1980	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nitrogenase molybdenum iron protein domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01297	Zinc-uptake complex component A periplasmic (ZnuA)	Zinc-uptake complex component A periplasmic	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	periplasmic binding protein component of an ABC type zinc uptake transporter	cation binding ion binding binding metal ion binding small molecule binding	localization transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050492	Bacterial metal-binding protein 9	Family
A, B	IPR006127	Periplasmic solute binding protein, ZnuA-like	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.