| IED ID | IndEnz0008000605 |
| Enzyme Type ID | cellulase000605 |
| Protein Name |
Endo-1,4-beta-xylanase A Xylanase A EC 3.2.1.8 1,4-beta-D-xylan xylanohydrolase A |
| Gene Name | XynA |
| Organism | Talaromyces purpureogenus (Soft rot fungus) (Penicillium purpureogenum) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Fungi Dikarya Ascomycota saccharomyceta Pezizomycotina leotiomyceta Eurotiomycetes Eurotiomycetidae Eurotiales (green and blue molds) Trichocomaceae Talaromyces Talaromyces sect. Talaromyces Talaromyces purpureogenus (Soft rot fungus) (Penicillium purpureogenum) |
| Enzyme Sequence | MVQLKTAALALLFAGQAISSPVDIDSRQASVSIDAKFKAHGKKYLGTIGDQYTLTKNSKNPAIIKADFGQLTPENSMKWDATEPNRGQFSFSGSDYLVNFAQSNGKLIRGHTLVWHSQLPGWVSSITDKNTLISVLKNHITTVMTRYKGKIYAWDVLNEIFNEDGSLRNSVFYNVIGEDYVRIAFETARSVDPNAKLYINDYNLDSAGYSKVNGMVSHVKKWLAAGIPIDGIGSQTHLGAGAGANVAGALNALAGAGTTEIAITELDIAGASSTDYVNVVKACLNQSKCVGITVWGVADPDSWRSSSSPLLFDSNYNPKAAYNAIANAL |
| Enzyme Length | 329 |
| Uniprot Accession Number | Q9P8J1 |
| Absorption | |
| Active Site | ACT_SITE 159; /note=Proton donor; /evidence=ECO:0000250; ACT_SITE 265; /note=Nucleophile; /evidence=ECO:0000255|PROSITE-ProRule:PRU10061 |
| Activity Regulation | ACTIVITY REGULATION: N-bromosuccinimide completely inhibits the catalytic activity. {ECO:0000269|PubMed:7640003}. |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans.; EC=3.2.1.8; Evidence={ECO:0000269|PubMed:7640003}; |
| DNA Binding | |
| EC Number | 3.2.1.8 |
| Enzyme Function | FUNCTION: Endo-1,4-beta-xylanase involved in the hydrolysis of xylan, a major structural heterogeneous polysaccharide found in plant biomass representing the second most abundant polysaccharide in the biosphere, after cellulose. {ECO:0000269|PubMed:7640003}. |
| Temperature Dependency | BIOPHYSICOCHEMICAL PROPERTIES: Temperature dependence: Optimum temperature is 60 degrees Celsius. {ECO:0000269|PubMed:7640003}; |
| PH Dependency | BIOPHYSICOCHEMICAL PROPERTIES: pH dependence: Optimum pH is 7.0. {ECO:0000269|PubMed:7640003}; |
| Pathway | PATHWAY: Glycan degradation; xylan degradation. |
| nucleotide Binding | |
| Features | Active site (2); Chain (1); Disulfide bond (1); Domain (1); Glycosylation (1); Signal peptide (1) |
| Keywords | Carbohydrate metabolism;Disulfide bond;Glycoprotein;Glycosidase;Hydrolase;Polysaccharide degradation;Secreted;Signal;Xylan degradation |
| Interact With | |
| Induction | INDUCTION: Expression is induced by oat spelt xylan but not by birchwood xylan, xylose, or xylitol. Expression is repressed by glucose. The promoter contains 3 creA consensus binding sites, 1 xlnR consensus binding site, and 3 pH activator pacC consensus binding sites. |
| Subcellular Location | SUBCELLULAR LOCATION: Secreted. |
| Modified Residue | |
| Post Translational Modification | |
| Signal Peptide | SIGNAL 1..19; /evidence=ECO:0000255 |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 35,351 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | |
| Cross Reference Brenda | 3.2.1.8; |