1CDG

NUCLEOTIDE SEQUENCE AND X-RAY STRUCTURE OF CYCLODEXTRIN GLYCOSYLTRANSFERASE FROM BACILLUS CIRCULANS STRAIN 251 IN A MALTOSE-DEPENDENT CRYSTAL FORM

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1cdga1	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	E-set domains of sugar-utilizing enzymes	Cyclomaltodextrin glycanotransferase, domain D	(Niallia circulans ) [TaxId: 1397 ],	SCOPe (2.08)
A	d1cdga2	All beta proteins	Prealbumin-like	Starch-binding domain-like	Starch-binding domain	Cyclodextrin glycosyltransferase, C-terminal domain	(Niallia circulans ) [TaxId: 1397 ],	SCOPe (2.08)
A	d1cdga3	All beta proteins	Glycosyl hydrolase domain	Glycosyl hydrolase domain	alpha-Amylases, C-terminal beta-sheet domain	Cyclodextrin glycosyltransferase	(Niallia circulans ) [TaxId: 1397 ],	SCOPe (2.08)
A	d1cdga4	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	Amylase, catalytic domain	Cyclodextrin glycosyltransferase	(Niallia circulans ) [TaxId: 1397 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	E set domains	8054905	3000070	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Starch-binding domain-like	8040267	3000816	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Glycosyl hydrolase domain-like	8042883	3001528	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	(Trans)glycosidases	8043311	3000313	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	TIG_2	e1cdgA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: TIG_2	ECOD (1.6)
A	CBM_20	e1cdgA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: CBM_20	ECOD (1.6)
A	Alpha-amylase_C	e1cdgA3	A: beta sandwiches	X: Glycosyl hydrolase domain-like	H: Glycosyl hydrolase domain (From Topology)	T: Glycosyl hydrolase domain	F: Alpha-amylase_C	ECOD (1.6)
A	Alpha-amylase	e1cdgA4	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Alpha-amylase	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	2.60.40.1180	Mainly Beta	Sandwich	Immunoglobulin-like	Golgi alpha-mannosidase II	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	PF01833	IPT/TIG domain (TIG)	IPT/TIG domain	This family consists of a domain that has an immunoglobulin like fold. These domains are found in cell surface receptors such as Met and Ron as well as in intracellular transcription factors where it is involved in DNA binding. CAUTION: This family d ...	This family consists of a domain that has an immunoglobulin like fold. These domains are found in cell surface receptors such as Met and Ron as well as in intracellular transcription factors where it is involved in DNA binding. CAUTION: This family does not currently recognise a significant number of members.	Domain
A	PF00128	Alpha amylase, catalytic domain (Alpha-amylase)	Alpha amylase, catalytic domain	Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, a ...	Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, and a carboxyl-terminal Greek key beta-barrel domain.	Domain
A	PF02806	Alpha amylase, C-terminal all-beta domain (Alpha-amylase_C)	Alpha amylase, C-terminal all-beta domain	Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, a ...	Alpha amylase is classified as family 13 of the glycosyl hydrolases. The structure is an 8 stranded alpha/beta barrel containing the active site, interrupted by a ~70 a.a. calcium-binding domain protruding between beta strand 3 and alpha helix 3, and a carboxyl-terminal Greek key beta-barrel domain.	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	CYCLODEXTRIN GLYCOSYL-TRANSFERASE	glycosyltransferase activity cyclomaltodextrin glucanotransferase activity transferase activity hexosyltransferase activity catalytic activity starch binding binding polysaccharide binding carbohydrate binding hydrolase activity, acting on glycosyl bonds amylase activity alpha-amylase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity glycosyltransferase activity cyclomaltodextrin glucanotransferase activity transferase activity hexosyltransferase activity catalytic activity starch binding binding polysaccharide binding carbohydrate binding hydrolase activity, acting on glycosyl bonds amylase activity alpha-amylase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity cation binding ion binding metal ion binding small molecule binding	carbohydrate metabolic process primary metabolic process metabolic process	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR013784	Carbohydrate-binding-like fold	Homologous Superfamily
A	IPR031319	Alpha-amylase, C-terminal domain	Domain
A	IPR002909	IPT domain	Domain
A	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A	IPR002044	Carbohydrate binding module family 20	Domain
A	IPR006047	Glycosyl hydrolase, family 13, catalytic domain	Domain
A	IPR006048	Alpha-amylase/branching enzyme, C-terminal all beta	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A	IPR006046	Alpha amylase	Family
A	IPR013780	Glycosyl hydrolase, all-beta	Homologous Superfamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	cyclomaltodextrin glucanotransferase M-CSA #45	Cyclodextrin glycosyltransferases (CGTases) are industrially important enzymes that produce cyclodextrins from starch by intramolecular transglycosylation. They belong to the important alpha-amylase family (family 13) of glycosyl hydrolases and catalyse the cyclisation of part of a (1->4)-alpha-D-glucan chain by the formation of a (1->4)-alpha-D-glucosidic bond. This enzyme also acts as a hydrolase or a transglycosylase, depending on the identity of the acceptor molecule in the final stages of the reaction.	Defined by 5 residues: ARG:A-227ASP:A-229GLU:A-257HIS:A-327ASP:A-328 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.4.1.19 (PDB Primary Data) Search M-CSA Motif + EC 2.4.1.19

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.