Annotations: 4GDA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4gdab_	All beta proteins	Streptavidin-like	Avidin/streptavidin	Avidin/streptavidin	automated matches	(Streptomyces avidinii ) [TaxId: 1895 ], (Streptomyces avidinii ) [TaxId: 1895 ],	SCOPe (2.08)
A	d4gdaa_	All beta proteins	Streptavidin-like	Avidin/streptavidin	Avidin/streptavidin	automated matches	(Streptomyces avidinii ) [TaxId: 1895 ], (Streptomyces avidinii ) [TaxId: 1895 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ank_2, Ank_4, Ank_5	e4gdaB2	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Ank_2, Ank_4, Ank_5	ECOD (develop294)
A	Bac_rhodopsin	e4gdaA1	A: alpha bundles	X: all-alpha NTP pyrophosphatases	H: all-alpha NTP pyrophosphatases	T: MazG-related	F: Bac_rhodopsin	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.40.128.30	Mainly Beta	Beta Barrel	Lipocalin	Avidin-like	CATH (4.3.0)
A	2.40.128.30	Mainly Beta	Beta Barrel	Lipocalin	Avidin-like	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Streptavidin	biotin binding organic acid binding binding vitamin binding ion binding anion binding carboxylic acid binding heterocyclic compound binding monocarboxylic acid binding small molecule binding sulfur compound binding	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR017889	Avidin-like, conserved site	Conserved Site
A, B	IPR036896	Avidin-like superfamily	Homologous Superfamily
A, B	IPR051764	Avidin/Streptavidin-related	Family
A, B	IPR005468	Avidin/streptavidin	Family
A, B	IPR005469	Avidin	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.