2,1-fructan:2,1-fructan 1-fructosyltransferase

In enzymology, a 2,1-fructan:2,1-fructan 1-fructosyltransferase is an enzyme that catalyzes the chemical reaction


 * [beta-D-fructosyl-(2->1)-]m + [beta-D-fructosyl-(2->1)-]n $$\rightleftharpoons$$ [beta-D-fructosyl-(2->1)-]m-1 + [beta-D-fructosyl-(2->1)-]n+1

Thus, the two substrates of this enzyme are [beta-D-fructosyl-(2->1)-]m and [beta-D-fructosyl-(2->1)-]n, whereas its two products are [beta-D-fructosyl-(2->1)-]m-1 and [beta-D-fructosyl-(2->1)-]n+1.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is 2,1-beta-D-fructan:2,1-beta-D-fructan 1-beta-D-fructosyltransferase. Other names in common use include 1,2-beta-D-fructan 1F-fructosyltransferase, fructan:fructan fructosyl transferase, FFT, 1,2-beta-fructan 1F-fructosyltransferase, 1,2-beta-D-fructan:1,2-beta-D-fructan, 1F-beta-D-fructosyltransferase, and fructan:fructan 1-fructosyl transferase.