1H54 | pdb_00001h54

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1h54b1	All alpha proteins	alpha/alpha toroid	Six-hairpin glycosidases	Glycosyltransferase family 36 C-terminal domain	Lactobacillus maltose phosphorylase, central domain	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)
B	d1h54b2	All beta proteins	Supersandwich	Galactose mutarotase-like	Glycosyltransferase family 36 N-terminal domain	Lactobacillus maltose phosphorylase, N-terminal domain	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)
B	d1h54b3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)
A	d1h54a1	All alpha proteins	alpha/alpha toroid	Six-hairpin glycosidases	Glycosyltransferase family 36 C-terminal domain	Lactobacillus maltose phosphorylase, central domain	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)
A	d1h54a2	All beta proteins	Supersandwich	Galactose mutarotase-like	Glycosyltransferase family 36 N-terminal domain	Lactobacillus maltose phosphorylase, N-terminal domain	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)
A	d1h54a3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Levilactobacillus brevis ) [TaxId: 1580 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Glycosyltransferase family 36 C-terminal domain	8020541	4003063	SCOP2 (2022-06-29)
B	SCOP2 Family	Glycosyltransferase family 36 N-terminal domain	8020543	4003183	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Six-hairpin glycosidases	8032921	3000970	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Galactose mutarotase-like	8032923	3000035	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	Galactose mutarotase-like	8032923	3000035	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Six-hairpin glycosidases	8032921	3000970	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	YonK	e1h54B2	A: a/b three-layered sandwiches	X: DP domain	H: DP domain	T: DP domain	F: YonK	ECOD (v294.1)
B	ABC_tran	e1h54B4	A: a/b three-layered sandwiches	X: Thioredoxin-like	H: ClpP/crotonase	T: ClpP/crotonase	F: ABC_tran	ECOD (v294.1)
A	Glyco_hydro_65N	e1h54A1	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: supersandwich	T: supersandwich	F: Glyco_hydro_65N	ECOD (v294.1)
A	Glyco_hydro_65m	e1h54A4	A: a/b three-layered sandwiches	X: Glycosyl hydrolase domain-like	H: alpha/alpha toroid	T: alpha/alpha toroid	F: Glyco_hydro_65m	ECOD (v294.1)
A	Glyco_hydro_65C	e1h54A3	A: a/b three-layered sandwiches	X: Glycosyl hydrolase domain-like	H: Glycoside hydrolase family 127 middle domain-related	T: Glycoside hydrolase family 127 middle domain-related	F: Glyco_hydro_65C	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.70.98.40	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
B	1.50.10.10	Mainly Alpha	Alpha/alpha barrel	Glycosyltransferase		CATH (4.3.0)
B	2.60.420.10	Mainly Beta	Sandwich	Maltose phosphorylase, domain 3	Maltose phosphorylase, domain 3	CATH (4.3.0)
A	2.70.98.40	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
A	1.50.10.10	Mainly Alpha	Alpha/alpha barrel	Glycosyltransferase		CATH (4.3.0)
A	2.60.420.10	Mainly Beta	Sandwich	Maltose phosphorylase, domain 3	Maltose phosphorylase, domain 3	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	MALTOSE PHOSPHORYLASE	binding carbohydrate binding glycosyltransferase activity transferase activity catalytic activity hydrolase activity, acting on glycosyl bonds hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity	carbohydrate metabolic process primary metabolic process metabolic process cellular process	-

Chains	Accession	Name	Type
A, B	IPR012341	Six-hairpin glycosidase-like superfamily	Homologous Superfamily
A, B	IPR008928	Six-hairpin glycosidase superfamily	Homologous Superfamily
A, B	IPR005195	Glycoside hydrolase, family 65, central catalytic	Domain
A, B	IPR017045	Maltose phosphorylase/glycosyl hydrolase/vacuolar acid trehalase	Family
A, B	IPR011013	Galactose mutarotase-like domain superfamily	Homologous Superfamily
A, B	IPR037018	Glycoside hydrolase family 65, N-terminal domain	Homologous Superfamily
A, B	IPR005194	Glycoside hydrolase family 65, C-terminal	Domain
A, B	IPR005196	Glycoside hydrolase, family 65, N-terminal	Domain

Chains	Enzyme Name	Description	Catalytic Residues
A	maltose phosphorylase M-CSA #649	Maltose phosphorylase (MP) catalyses the conversion of maltose and inorganic phosphate into beta-D-glucose-1-phosphate and glucose without a cofactor. It belongs to family 65 of glycoside hydrolases and can be classed as an inverting phosphorylase for the inversion of the anomeric configuration. The reverse reaction of maltose phosphorylase is of particular interest to synthesise low cost disaccharides for large scale oligosaccharide production.	Defined by 1 residue: GLU:A-487 \| Explore in 3D: M-CSA Motif Definition At least 2 residues must be present to support Structure Motif searching. EC: 2.4.1.8 (PDB Primary Data)

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.