This family consists of various 1,3-beta-glucan synthase components including Gls1, Gls2 and Gls3 from yeast. 1,3-beta-glucan synthase EC:2.4.1.34 also known as callose synthase catalyses the formation of a beta-1,3-glucan polymer that is a major component of the fungal cell wall [1]. The reaction catalysed is:- UDP-glucose + {(1,3)-beta-D-glucosyl}(N) <=> UDP + {(1,3)-beta-D-glucosyl}(N+1).

1: Cloning of the Candida albicans homolog of Saccharomyces cerevisiae GSC1/FKS1 and its involvement in beta-1,3-glucan synthesis. Mio T, Adachi-Shimizu M, Tachibana Y, Tabuchi H, Inoue SB, Yabe T, Yamada-Okabe T, Arisawa M, Watanabe T, Yamada-Okabe H; J Bacteriol 1997;179:4096-4105. PMID:9209021

2: Characterization and gene cloning of 1,3-beta-D-glucan synthase from Saccharomyces cerevisiae. Inoue SB, Takewaki N, Takasuka T, Mio T, Adachi M, Fujii Y, Miyamoto C, Arisawa M, Furuichi Y, Watanabe T; Eur. J. Biochem 1995;231:845-854. PMID:7649185