Reaction: 2 raffinose = 1F-α-D-galactosylraffinose + sucrose
Glossary: raffinose = β-D-fructofuranosyl α-D-galactopyranosyl-(1→6)-α-D-glucopyranoside
Other name(s): raffinose (raffinose donor) galactosyltransferase; raffinose:raffinose α-galactosyltransferase; raffinose—raffinose α-galactotransferase
Systematic name: raffinose:raffinose α-D-galactosyltransferase
Comments: The 3F position of raffinose can also act as galactosyl acceptor; the enzyme is involved in the accumulation of the tetrasaccharides lychnose and isolychnose in the leaves of Cerastium arvense and other plants of the family Caryophyllaceae during late autumn.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 93389-38-9
References:
1. Hopf, H., Gruber, G., Zinn, A. and Kandler, O. Physiology and biosynthesis of lychnose in Cerastium arvense. Planta 162 (1984) 283-288.