1B90 | pdb_00001b90

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)

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)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Ldl_recept_b	e1b90A1	A: alpha arrays	X: Phage tail fiber protein trimerization domain	H: Phage tail fiber protein trimerization domain	T: Phage tail fiber protein trimerization domain	F: Ldl_recept_b	ECOD (v295.2)
A	NAD_binding_3	e1b90A2	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: NAD_binding_3	ECOD (v295.2)

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)

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	-

Chains	Accession	Name	Type
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR001554	Glycoside hydrolase, family 14	Family
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR000125	Glycoside hydrolase, family 14A, bacterial	Family
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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.