| IED ID | IndEnz0010000004 |
| Enzyme Type ID | esterase000004 |
| Protein Name |
Feruloyl esterase B EC 3.1.1.73 Cinnamoyl esterase CinnAE FAE-I Ferulic acid esterase B FAEB |
| Gene Name | faeB |
| Organism | Aspergillus niger |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Fungi Dikarya Ascomycota saccharomyceta Pezizomycotina leotiomyceta Eurotiomycetes Eurotiomycetidae Eurotiales (green and blue molds) Aspergillaceae Aspergillus Aspergillus subgen. Circumdati Aspergillus niger |
| Enzyme Sequence | MKVASLLSLALPGAALAATDPFQSRCNEFQNKIDIANVTVRSVAYVAAGQNISQAEVASVCKASVQASVDLCRVTMNISTSDRSHLWAEAWLPRNYTGRFVSTGNGGLAGCVQETDLNFAANFGFATVGTNGGHDGDTAKYFLNNSEVLADFAYRSVHEGTVVGKQLTQLFYDEGYNYSYYLGCSTGGRQGYQQVQRFPDDYDGVIAGSAAMNFINLISWGAFLWKATGLADDPDFISANLWSVIHQEIVRQCDLVDGALDGIIEDPDFCAPVIERLICDGTTNGTSCITGAQAAKVNRALSDFYGPDGTVYYPRLNYGGEADSASLYFTGSMYSRTEEWYKYVVYNDTNWNSSQWTLESAKLALEQNPFNIQAFDPNITAFRDRGGKLLSYHGTQDPIISSTDSKLYYRRVANALNAAPSELDEFYRFFQISGMGHCGDGTGASYIGQGYGTYTSKAPQVNLLRTMVDWVENGKAPEYMPGNKLNANGSIEYMRKHCRYPKHNIHTGPGNYTDPNSWTCV |
| Enzyme Length | 521 |
| Uniprot Accession Number | Q8WZI8 |
| Absorption | |
| Active Site | ACT_SITE 185; /note=Acyl-ester intermediate; /evidence=ECO:0000250|UniProtKB:Q2UP89; ACT_SITE 397; /note=Charge relay system; /evidence=ECO:0000250|UniProtKB:Q2UP89; ACT_SITE 437; /note=Charge relay system; /evidence=ECO:0000250|UniProtKB:Q2UP89 |
| Activity Regulation | ACTIVITY REGULATION: Inhibited by the specific serine esterase inhibitor AEBSF. {ECO:0000269|PubMed:8679110}. |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=Feruloyl-polysaccharide + H(2)O = ferulate + polysaccharide.; EC=3.1.1.73; Evidence={ECO:0000269|PubMed:8679110}; |
| DNA Binding | |
| EC Number | 3.1.1.73 |
| Enzyme Function | FUNCTION: Involved in degradation of plant cell walls. Hydrolyzes of the feruloyl-arabinose ester bond in arabinoxylans as well as the feruloyl-galactose and feruloyl-arabinose ester bonds in pectin. {ECO:0000269|PubMed:11931668, ECO:0000269|PubMed:7805053}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | |
| Features | Active site (3); Chain (1); Disulfide bond (6); Glycosylation (12); Metal binding (5); Sequence conflict (1); Signal peptide (1) |
| Keywords | Calcium;Carbohydrate metabolism;Direct protein sequencing;Disulfide bond;Glycoprotein;Hydrolase;Metal-binding;Polysaccharide degradation;Secreted;Serine esterase;Signal;Xylan degradation |
| Interact With | |
| Induction | INDUCTION: By caffeic acid, p-coumaric acid and to a lesser extent by ferulic acid. Repressed by simple sugars, probably via the carbon catabolite repressor protein CreA. {ECO:0000269|PubMed:11931668}. |
| Subcellular Location | SUBCELLULAR LOCATION: Secreted {ECO:0000269|PubMed:11931668}. |
| Modified Residue | |
| Post Translational Modification | PTM: Glycosylated. |
| Signal Peptide | SIGNAL 1..17; /evidence=ECO:0000269|PubMed:11931668 |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 57,153 |
| Kinetics | |
| Metal Binding | METAL 254; /note=Calcium; /evidence=ECO:0000250|UniProtKB:Q2UP89; METAL 257; /note=Calcium; /evidence=ECO:0000250|UniProtKB:Q2UP89; METAL 259; /note=Calcium; via carbonyl oxygen; /evidence=ECO:0000250|UniProtKB:Q2UP89; METAL 261; /note=Calcium; /evidence=ECO:0000250|UniProtKB:Q2UP89; METAL 263; /note=Calcium; via carbonyl oxygen; /evidence=ECO:0000250|UniProtKB:Q2UP89 |
| Rhea ID | |
| Cross Reference Brenda | 3.1.1.73; |