Abscisate beta-glucosyltransferase explained

Abscisate beta-glucosyltransferase
Ec Number:	2.4.1.263

Abscisate beta-glucosyltransferase (ABA-glucosyltransferase, ABA-GTase, AOG) is an enzyme with systematic name UDP-D-glucose:abscisate beta-D-glucosyltransferase.^[1] This enzyme catalyses the following chemical reaction

\rightleftharpoons UDP + beta-D-glucopyranosyl abscisate

The enzyme acts better on (S)-2-trans-abscisate than the natural (S)-2-cis isomer, abscisate, or its enantiomer, the (R)-2-cis isomer.

Notes and References

1. Xu ZJ, Nakajima M, Suzuki Y, Yamaguchi I . Cloning and characterization of the abscisic acid-specific glucosyltransferase gene from adzuki bean seedlings . Plant Physiology . 129 . 3 . 1285–95 . July 2002 . 12114582 . 166522 . 10.1104/pp.001784 .