1CNS
CRYSTAL STRUCTURE OF CHITINASE AT 1.91A RESOLUTION
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 | d1cnsa_ | Alpha and beta proteins (a+b) | Lysozyme-like | Lysozyme-like | Family 19 glycosidase | Plant class II chitinase | (Hordeum vulgare ) [TaxId: 4513 ], | SCOPe (2.08) |
B | d1cnsb_ | Alpha and beta proteins (a+b) | Lysozyme-like | Lysozyme-like | Family 19 glycosidase | Plant class II chitinase | (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_19 | e1cnsA1 | A: a+b complex topology | X: Lysozyme-like (From Homology) | H: Lysozyme-like | T: Lysozyme-like | F: Glyco_hydro_19 | ECOD (1.6) |
B | Glyco_hydro_19 | e1cnsB1 | A: a+b complex topology | X: Lysozyme-like (From Homology) | H: Lysozyme-like | T: Lysozyme-like | F: Glyco_hydro_19 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 1.10.530.10 | Mainly Alpha | Orthogonal Bundle | Lysozyme | CATH (4.3.0) | |
A | 3.30.20.10 | Alpha Beta | 2-Layer Sandwich | Endochitinase | domain 2 | CATH (4.3.0) |
B | 1.10.530.10 | Mainly Alpha | Orthogonal Bundle | Lysozyme | CATH (4.3.0) | |
B | 3.30.20.10 | Alpha Beta | 2-Layer Sandwich | Endochitinase | domain 2 | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF00182 | Chitinase class I (Glyco_hydro_19) | Chitinase class I | - | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR016283 | Glycoside hydrolase, family 19 | Family | |
IPR000726 | Glycoside hydrolase, family 19, catalytic | Domain | |
IPR023346 | Lysozyme-like domain superfamily | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
chitinase (GH19, Class II) M-CSA #475 | Chitinase binds to chitin and randomly cleaves glycosidic linkages in chitin and chitodextrins in a non-processive mode, generating chitooligosaccharides and free ends on which exo-chitinases and exo-chitodextrinases can act. Chitin is a bio-polymer composed of 1,4-beta linked N-acetylglucosamine units, a major component of fungal cell walls and insect exoskeletons. Activity is greatly stimulated in the presence of EC 1.14.99.53, lytic chitin monoxygenase, which attacks the crystalline structure of chitin and makes the polymer more accessible to the chitinase. It is used by the seeds to retard fungal growth by interfering with the cell wall. | EC: 3.2.1.14 (PDB Primary Data) |