Enzymes
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Reaction participants Show >> << Hide
- Name help_outline 10-deacetyltaxuyunnanin C Identifier CHEBI:11302 Charge 0 Formula C26H38O7 InChIKeyhelp_outline RAKDXBHPGCOTQG-SFPMZPPXSA-N SMILEShelp_outline [H][C@]12[C@H](CC(C)=C([C@@H](O)C[C@]3(C)CC[C@H](OC(C)=O)C(=C)[C@@]3([H])[C@@H]1OC(C)=O)C2(C)C)OC(C)=O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline acetyl-CoA Identifier CHEBI:57288 (Beilstein: 8468140) help_outline Charge -4 Formula C23H34N7O17P3S InChIKeyhelp_outline ZSLZBFCDCINBPY-ZSJPKINUSA-J SMILEShelp_outline CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 321 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CoA Identifier CHEBI:57287 (Beilstein: 11604429) help_outline Charge -4 Formula C21H32N7O16P3S InChIKeyhelp_outline RGJOEKWQDUBAIZ-IBOSZNHHSA-J SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCS 2D coordinates Mol file for the small molecule Search links Involved in 1,468 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline taxuyunnanin C Identifier CHEBI:15208 Charge 0 Formula C28H40O8 InChIKeyhelp_outline KFFHSFCOKCGBBW-VCPDXWRASA-N SMILEShelp_outline [H][C@]12[C@H](CC(C)=C([C@H](C[C@]3(C)CC[C@H](OC(C)=O)C(=C)[C@@]3([H])[C@@H]1OC(C)=O)OC(C)=O)C2(C)C)OC(C)=O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:18837 | RHEA:18838 | RHEA:18839 | RHEA:18840 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Purification and characterization of acetyl coenzyme A: 10-hydroxytaxane O-acetyltransferase from cell suspension cultures of Taxus chinensis.
Menhard B., Zenk M.H.
An O-acetyltransferase that catalyzes the regiospecific acetylation of a range of taxanes possessing an unsubstituted 10-hydroxyl group was detected and purified to apparent electrophoretic homogeneity from a cytosolic fraction of Taxus chinensis cell cultures. The purification involved negative c ... >> More
An O-acetyltransferase that catalyzes the regiospecific acetylation of a range of taxanes possessing an unsubstituted 10-hydroxyl group was detected and purified to apparent electrophoretic homogeneity from a cytosolic fraction of Taxus chinensis cell cultures. The purification involved negative calcium phosphate adsorption, sephadex desalting, DEAE, AcA44 chromatography, HighQ, CHT II, HiTrap Blue, Phenylsepharose and Mimetic Green purification steps. The purified acetyltransferase was found to be a monomeric protein of 71 +/-1.5 kDa that is highly regio- and stereospecific towards the 10 beta-hydroxyl group of the taxane molecule and is also active towards 10-desacetylbaccatine III. The acetyltransferase reaction had a pH optimum of 9.0 with halfmaximal activities at pH 6.8 and 10.8, respectively. The temperature optimum was at 35 degrees C and the isoelectric point at 5.6. The apparent K(m) values for 10-desacetyltaxuyunnanine C and acetyl CoA were 23 and 61 microM, respectively. The turnover rate for the enzyme using both substrates was 0.2 mol mol-1 of enzyme. The kinetic optimum was determined to be Kcat/K(m) = 8.7 s-1 L M-1. << Less