galactinol-raffinose galactosyltransferase activity
Catalysis of the reaction: raffinose + 1-alpha-D-galactosyl-myo-inositol = stachyose + myo-inositol.
GO:0008378
galactosyltransferase activity
is_a
alpha-D-(1->3)-galactosyl-myo-inositol:raffinose galactosyltransferase activity
related
stachyose synthetase activity
related