Annotations: 4GDA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4gdaa_	All beta proteins	Streptavidin-like	Avidin/streptavidin	Avidin/streptavidin	automated matches	(Streptomyces avidinii ) [TaxId: 1895 ], (Streptomyces avidinii ) [TaxId: 1895 ],	SCOPe (2.08)
B	d4gdab_	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)
A	Avidin	e4gdaA1	A: beta barrels	X: Lipocalins/Streptavidin	H: Avidin/Streptavidin (From Topology)	T: Avidin/Streptavidin	F: Avidin	ECOD (1.6)
B	Avidin	e4gdaB2	A: beta barrels	X: Lipocalins/Streptavidin	H: Avidin/Streptavidin (From Topology)	T: Avidin/Streptavidin	F: Avidin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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