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UniProt functional annotation for Q9HFH0 | ||
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| UniProt code: Q9HFH0. |
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| Organism: | |
Talaromyces funiculosus (Fruitlet core rot fungus) (Penicillium funiculosum). |
| Taxonomy: | |
Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes; Eurotiomycetidae; Eurotiales; Trichocomaceae; Talaromyces; Talaromyces sect. Talaromyces. |
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| 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. |
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| Catalytic activity: | |
Reaction=Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans.; EC=3.2.1.8; Evidence={ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}; |
| Activity regulation: | |
Strongly inhibited by wheat xylanase inhibiting protein I (XIP-I), and by proteinaceous endoxylanase Triticum aestivum xylanase inhibitors I and II (TAXI-I and TAXI-II). {ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}. |
| Biophysicochemical properties: | |
Kinetic parameters: Vmax=2540 umol/min/mg enzyme toward birchwood xylan at pH 5.5 and 30 degrees Celsius {ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}; Vmax=7190 umol/min/mg enzyme toward soluble wheat arabinoxylans at pH 5.5 and 30 degrees Celsius {ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}; pH dependence: Optimum pH is 5.0. {ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}; Temperature dependence: Optimum temperature is 55 degrees Celsius. {ECO:0000269|PubMed:12147340, ECO:0000269|PubMed:17216454}; |
| Pathway: | |
Glycan degradation; xylan degradation. |
| Subunit: | |
Interacts directly with the wheat xylanase inhibiting protein I (XIP-I). {ECO:0000269|PubMed:15181003}. |
| Subcellular location: | |
Secreted {ECO:0000269|PubMed:12147340}. |
| Similarity: | |
Belongs to the glycosyl hydrolase 11 (cellulase G) family. {ECO:0000305}. |
Annotations taken from UniProtKB at the EBI.