Annotations: 1B90

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1b90a1	All beta proteins	Prealbumin-like	Starch-binding domain-like	Starch-binding domain	beta-amylase	(Bacillus cereus ) [TaxId: 1396 ],	SCOPe (2.08)
A	d1b90a2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	Amylase, catalytic domain	Bacterial beta-amylase	(Bacillus cereus ) [TaxId: 1396 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	(Trans)glycosidases	8032374	3000313	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Starch-binding domain-like	8032373	3000816	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	CBM_20	e1b90A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: CBM_20	ECOD (1.6)
A	Glyco_hydro_42	e1b90A2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Glyco_hydro_42	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01373	Glycosyl hydrolase family 14 (Glyco_hydro_14)	Glycosyl hydrolase family 14	This family are beta amylases.	Domain
A	PF00686	Starch binding domain (CBM_20)	Starch binding domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROTEIN (BETA-AMYLASE)	starch binding binding polysaccharide binding carbohydrate binding hydrolase activity, acting on glycosyl bonds amylase activity beta-amylase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity cation binding ion binding metal ion binding small molecule binding	carbohydrate metabolic process polysaccharide metabolic process catabolic process polysaccharide catabolic process carbohydrate catabolic process metabolic process cellular process primary metabolic process macromolecule metabolic process macromolecule catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR001554	Glycoside hydrolase, family 14	Family
A	IPR000125	Glycoside hydrolase, family 14A, bacterial	Family
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR002044	Carbohydrate binding module family 20	Domain
A	IPR034835	Beta-amylase, CBM20 domain	Domain
A	IPR018238	Glycoside hydrolase, family 14, conserved site	Conserved Site

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.