Nuatigenin 3beta-glucosyltransferase

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In enzymology, a nuatigenin 3beta-glucosyltransferase (EC 2.4.1.192) is an enzyme that catalyzes the chemical reaction

UDP-glucose + (20S,22S,25S)-22,25-epoxyfurost-5-ene-3beta,26-diol $\rightleftharpoons$ UDP + (20S,22S,25S)-22,25-epoxyfurost-5-ene-3beta,26-diol 3-O-beta-D-glucoside

Thus, the two substrates of this enzyme are UDP-glucose and (20S,22S,25S)-22,25-epoxyfurost-5-ene-3beta,26-diol, whereas its 3 products are UDP, (20S,22S,25S)-22,25-epoxyfurost-5-ene-3beta,26-diol, and 3-O-beta-D-glucoside.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:(20S,22S,25S)-22,25-epoxyfurost-5-ene-3beta,26-diol 3-O-beta-D-glucosyltransferase. This enzyme is also called uridine diphosphoglucose-nuatigenin glucosyltransferase.

[edit] References

IUBMB entry for 2.4.1.192
BRENDA references for 2.4.1.192 (Recommended.)
PubMed references for 2.4.1.192
PubMed Central references for 2.4.1.192
Google Scholar references for 2.4.1.192
Kalinowska M and Wojciechowski ZA (1986). "Enzymatic-synthesis of nuatigenin 3-beta-D-glucoside in oat (Avena sativa) leaves". Phytochemistry 25: 2525–2529.
Kalinowska M and Wojciechowski ZA (1987). "Subcellular-localization of UDPG-nuatigenin glucosyltransferase in oat leaves". Phytochemistry 26: 353–357.