| 释义 |
transketolase, n. Biochem.|trɑːnsˈkiːtɒleɪz, træns-|
[f. trans- + ketol n. + -ase.]
Any enzyme which catalyses the transfer of a ketol group, spec. of the glycolaldehyde group at various stages in photosynthesis.
1953E. Racker et al. in Jrnl. Amer. Chem. Soc. LXXV. 1010/2 One must assume the formation of an ‘active glycolaldehyde’ which condenses with the ‘acceptor aldehyde’ to form a ketosugar. The enzyme may therefore be termed a transketolase. 1958Dixon & Webb Enzymes v. 240 Transketolase may be regarded as transferring glycolaldehyde from combination with one aldehyde to combination with another. 1970R. W. McGilvery Biochem. xvi. 325 The combination of the transketolase and transaldolase reactions accomplishes the conversion of six of the 10 carbon atoms in a pair of pentose phosphates to fructose-6-phosphate. 1982T. M. Devlin Textbk. Biochem. viii. 408 Transketolase..transfers a 2-carbon unit from xylulose 5-phosphate to ribose 5-phosphate. |