Galactinol-raffinose galactosyltransferase

In enzymology, a galactinol-raffinose galactosyltransferase (EC number|2.4.1.67) is an enzyme that catalyzes the chemical reaction

:alpha-D-galactosyl-(1->3)-1D-myo-inositol + raffinose $ightleftharpoons$ myo-inositol + stachyose

Thus, the two substrates of this enzyme are alpha-D-galactosyl-(1->3)-1D-myo-inositol and raffinose, whereas its two products are myo-inositol and stachyose.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is alpha-D-galactosyl-(1->3)-myo-inositol:raffinose galactosyltransferase. Other names in common use include galactinol-raffinose galactosyltransferase, and stachyose synthetase. This enzyme participates in galactose metabolism.

References

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* Preiss, J. (Ed.), The Biochemistry of Plant, vol. 3, Academic Press, New York, 1980, p. 221-270.

External links

::"The CAS registry number for this enzyme class is CAS registry|37277-70-6."

Gene Ontology (GO) codes