Inhibitors | Comment | Organism | Structure |
---|---|---|---|
ammonium acetate | 20% inhibition at 100 mM | Pestalotiopsis sp. | |
EDTA | - |
Pestalotiopsis sp. | |
Fe2+ | causes almost complete inactivation | Pestalotiopsis sp. | |
Mn2+ | 50% inhibition | Pestalotiopsis sp. |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
extracellular | - |
Pestalotiopsis sp. | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ca2+ | - |
Pestalotiopsis sp. | |
Mg2+ | - |
Pestalotiopsis sp. | |
Zn2+ | - |
Pestalotiopsis sp. |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Pestalotiopsis sp. | A0A1L3THR9 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
additional information | propagation in suspension-cultured rice cells | Pestalotiopsis sp. | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
acetylated chitosan polymer + H2O | increasing activity with increasing chain length | Pestalotiopsis sp. | ? | - |
? | |
alpha-chitin + H2O | - |
Pestalotiopsis sp. | ? | - |
? | |
beta-chitin + H2O | - |
Pestalotiopsis sp. | ? | - |
? | |
chitin hexamer + H2O | - |
Pestalotiopsis sp. | ? | - |
? | |
chitosan hexamer + H2O | - |
Pestalotiopsis sp. | ? | - |
? | |
colloidal chitin + H2O | high activity | Pestalotiopsis sp. | ? | - |
? | |
additional information | PesCDA modifies chitin oligomers, the products are partially deacetylated chitosan oligomers with a specific acetylation pattern: GlcNAc-GlcNAc-(GlcN)n-GlcNAc (n > 1). Substrate specificity with activity against chitosan polymers that have degrees of acetylation of 10-60% as well as against colloidal chitin, alpha-chitin and beta-chitin, overview | Pestalotiopsis sp. | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | domain architecture of the chitin deacetylase PesCDA from Pestalotiopsis sp.. The enzyme contains an N-terminal putative signal peptide (SP), a polysaccharide deacetylase domain (PDD), and a C-terminal carbohydrate binding module representing motif family 18 (CBM18) | Pestalotiopsis sp. |
Synonyms | Comment | Organism |
---|---|---|
CDA | - |
Pestalotiopsis sp. |
PesCDA | - |
Pestalotiopsis sp. |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
55 | - |
- |
Pestalotiopsis sp. |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
- |
Pestalotiopsis sp. |
General Information | Comment | Organism |
---|---|---|
metabolism | model for plant cell recognition of fungi containing chitin in their cell walls and hypothetical fungal strategy to overcome recognition by the plant immune system. Chitin in the fungal cell wall, consisting of N-acetyl-D-glucosamine units, is degraded by plant chitinases | Pestalotiopsis sp. |
physiological function | in fungi, the key enzymes that convert chitin to chitosan are chitin deacetylases (CDA). Chitin deacetylase from the endophytic fungus Pestalotiopsis sp. efficiently inactivates the elicitor activity of chitin oligomers in rice cells. A bioactivity assay where suspension-cultured rice cells are incubated with the PesCDA products (processed chitin hexamers), chitosan oligomer products no longer elicit the plant immune system, unlike the substrate hexamers. The endophytic enzyme can prevent the endophyte from being recognized by the plant immune system | Pestalotiopsis sp. |