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In enzymology, a 6G-fructosyltransferase (EC 2.4.1.243) is an enzyme that catalyzes the chemical reaction

m1 alpha-D-glucopyranoside + n1 alpha-D-glucopyranoside ${\displaystyle \rightleftharpoons }$ m alpha-D-glucopyranoside + n1 beta-D-fructofuranosyl-(2->6)-alpha-D-glucopyranoside (m > 0; n >${\displaystyle \rightleftharpoons }$ 0)

Thus, the two substrates of this enzyme are m+1 alpha-D-glucopyranoside]] and n+1 alpha-D-glucopyranoside]], whereas its 4 products are m alpha-D-glucopyranoside]], n+1]], ], and 0.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is 1F-oligosucrose 6G-beta-D-fructotransferase. Other names in common use include fructan:fructan 6G-fructosyltransferase, 1F(1-beta-D-fructofuranosyl)m, sucrose:1F(1-beta-D-fructofuranosyl)_nsucrose, 6G-fructosyltransferase, 6G-FFT, 6G-FT, and 6G-fructotransferase.

References

• Shiomi N (1981). "Purification and characterisation of 6G-fructosyltransferase from the roots of asparagus (Asparagus officinalis L.)". Carbohydr. Res. 96 (2): 281–292. doi:10.1016/S0008-6215(00)81878-9.
• Shiomi N (1982). "Reverse reaction of fructosyl transfer catalysed by asparagus 6G-fructosyltransferase". Carbohydr. Res. 106: 166–169. doi:10.1016/S0008-6215(00)80743-0.
• Shiomi N, Ueno K (2004). "Cloning and expression of genes encoding fructosyltransferases from higher plants in food technology". J. Appl. Glycosci. 51 (2): 177–183. doi:10.5458/jag.51.177.
• Ueno K, Onodera S, Kawakami A, Yoshida M, Shiomi N (March 2005). "Molecular characterization and expression of a cDNA encoding fructan:fructan 6G-fructosyltransferase from asparagus (Asparagus officinalis)". The New Phytologist. 165 (3): 813–24. doi:10.1111/j.1469-8137.2004.01294.x. PMID 15720693.

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