1EX1
BETA-D-GLUCAN EXOHYDROLASE FROM BARLEY
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | d1ex1a1 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | (Trans)glycosidases | NagZ-like | Beta-D-glucan exohydrolase, N-terminal domain | (Hordeum vulgare ) [TaxId: 4513 ], | SCOPe (2.08) |
| A | d1ex1a2 | Alpha and beta proteins (a/b) | Flavodoxin-like | Beta-D-glucan exohydrolase, C-terminal domain-like | Beta-D-glucan exohydrolase, C-terminal domain-like | Beta-D-glucan exohydrolase, C-terminal domain | (Hordeum vulgare ) [TaxId: 4513 ], | 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 | Glyco_hydro_3 | e1ex1A1 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: Glyco_hydro_3 | ECOD (1.6) |
| A | Glyco_hydro_3_C | e1ex1A2 | A: a/b three-layered sandwiches | X: Flavodoxin-like | H: Beta-D-glucan exohydrolase, C-terminal domain (From Topology) | T: Beta-D-glucan exohydrolase, C-terminal domain | F: Glyco_hydro_3_C | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A | 3.20.20.300 | Alpha Beta | Alpha-Beta Barrel | TIM Barrel | Glycoside hydrolase, family 3, N-terminal domain | CATH (4.3.0) |
| A | 3.40.50.1700 | Alpha Beta | 3-Layer(aba) Sandwich | Rossmann fold | Glycoside hydrolase family 3 C-terminal domain | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| PF00933 | Glycosyl hydrolase family 3 N terminal domain (Glyco_hydro_3) | Glycosyl hydrolase family 3 N terminal domain | - | Domain | |
| PF01915 | Glycosyl hydrolase family 3 C-terminal domain (Glyco_hydro_3_C) | Glycosyl hydrolase family 3 C-terminal domain | This domain is involved in catalysis and may be involved in binding beta-glucan [1]. This domain is found associated with Pfam:PF00933. | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| PROTEIN (BETA-D-GLUCAN EXOHYDROLASE ISOENZYME EXO1) |
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| IPR001764 | Glycoside hydrolase, family 3, N-terminal | Domain | |
| IPR036962 | Glycoside hydrolase, family 3, N-terminal domain superfamily | Homologous Superfamily | |
| IPR017853 | Glycoside hydrolase superfamily | Homologous Superfamily | |
| IPR036881 | Glycoside hydrolase family 3 C-terminal domain superfamily | Homologous Superfamily | |
| IPR002772 | Glycoside hydrolase family 3 C-terminal domain | Domain |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| glucan 1,3-beta-glucosidase M-CSA #790 | Barley beta-D-glucan exohydrolasesbelong to family 3 of glucosyl hydrolases. ExoI is one of two beta-D-glucan exohydrolase isoenzymes that hydrolyse a broad range of substrates with (1-2)-, (1-3)-, (1-4)-, and (1-6)-beta-D-glucosidic linkages. The enzyme removes single glucose units from the non-reducing termini of polymeric and oligomeric substrates with the retention of anomeric configuration. The selective hydrolysis of glycosidic bonds is crucial for key processes of plant development and growth, such as cell wall expansion and degradation, and turnover of signalling molecules. | EC: 3.2.1.58 (PDB Primary Data) |
