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

1,2-beta-fructan 1F-fructosyltransferase
Ec Number:	2.4.1.100
Cas Number:	73379-55-2
Go Code:	0047207

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.

References

• Henry RJ, Darbyshire B . 1980 . Sucrose:sucrose fructosyltransferase and fructan:fructan fructosyltransferase from Allium cepa . . 19 . 1017 - 1020 . 10.1016/0031-9422(80)83050-0 . 6 .
• Vergauwen R, Van Laere A, Van den Ende W . 2003 . Properties of fructan:fructan 1-fructosyltransferases from chicory and globe thistle, two Asteracean plants storing greatly different types of inulin . Plant Physiol. . 133 . 391 - 401 . 12970504 . 10.1104/pp.103.026807 . 1 . 196615 .