1KDG
Crystal structure of the flavin domain of cellobiose dehydrogenase
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
A | SCOP2 Family | GMC oxidoreductase-like | 8001355 | 4000122 | SCOP2 (2022-06-29) |
A | SCOP2 Superfamily | Flavoreductase-like | 8055487 | 3000055 | SCOP2 (2022-06-29) |
B | SCOP2B Superfamily | Flavoreductase-like | 8055487 | 3000055 | 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 | CDH_FAD_bind_C | e1kdgA1 | A: a+b two layers | X: FAD-linked reductases, C-terminal domain-like | H: FAD-linked reductases-C (From Topology) | T: FAD-linked reductases-C | F: CDH_FAD_bind_C | ECOD (1.6) |
A | GMC_oxred_N | e1kdgA2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: FAD/NAD(P)-binding domain | F: GMC_oxred_N | ECOD (1.6) |
B | CDH_FAD_bind_C | e1kdgB1 | A: a+b two layers | X: FAD-linked reductases, C-terminal domain-like | H: FAD-linked reductases-C (From Topology) | T: FAD-linked reductases-C | F: CDH_FAD_bind_C | ECOD (1.6) |
B | GMC_oxred_N | e1kdgB2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: FAD/NAD(P)-binding domain | F: GMC_oxred_N | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 3.50.50.60 | Alpha Beta | 3-Layer(bba) Sandwich | FAD/NAD(P)-binding domain | FAD/NAD(P)-binding domain | CATH (4.3.0) |
A | 3.30.410.10 | Alpha Beta | 2-Layer Sandwich | Cholesterol Oxidase | domain 2 | CATH (4.3.0) |
B | 3.50.50.60 | Alpha Beta | 3-Layer(bba) Sandwich | FAD/NAD(P)-binding domain | FAD/NAD(P)-binding domain | CATH (4.3.0) |
B | 3.30.410.10 | Alpha Beta | 2-Layer Sandwich | Cholesterol Oxidase | domain 2 | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF00732 | GMC oxidoreductase (GMC_oxred_N) | GMC oxidoreductase | This family of proteins bind FAD as a cofactor. | Domain | |
PF05199 | GMC oxidoreductase (GMC_oxred_C) | GMC oxidoreductase | This domain found associated with Pfam:PF00732. | Domain | |
PF13450 | NAD(P)-binding Rossmann-like domain (NAD_binding_8) | NAD(P)-binding Rossmann-like domain | - | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR015920 | Cellobiose dehydrogenase, cytochrome domain | Domain | |
IPR000172 | Glucose-methanol-choline oxidoreductase, N-terminal | Domain | |
IPR005018 | DOMON domain | Domain | |
IPR007867 | Glucose-methanol-choline oxidoreductase, C-terminal | Domain | |
IPR053208 | GMC Oxidoreductase Cellobiose Dehydrogenase | Family | |
IPR036188 | FAD/NAD(P)-binding domain superfamily | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
cellobiose dehydrogenase (acceptor) M-CSA #673 | Fungal cellobiose dehydrogenase (CDH) participates in the rotting of wood by catalysing a key step in the breakdown of cellulose (and lignin), namely the oxidation of cellobiose (a reaction product in cellulose hydrolysis) to cellobiono-1,5-lactone. This is used to provide a carbon source for the micro-organism. CDH is the only known extracellular flavocytochrome, a small and heterogeneous group of redox-active proteins that carry both haem and flavin prosthetic groups. Applications of CDH include degradation of various environmental pollutants. It shows sequence and structural homology with glucose and cholesterol oxidase, two other known enzymes catalysing similar processes, so the mechanism is likely to be the same between the three. FAD is used as a cofactor for the reaction, being reduced by the substrate and subsequently reoxidised by a cytochromal haem group contained in the non-active site containing domain (PDB:1d7b) | Defined by 3 residues: TYR:A-400 [auth A-609]HIS:A-480 [auth A-689]ASN:A-523 [auth A-732] | EC: 1.1.99.18 (PDB Primary Data) |