Splits internally a 1,3-beta-glucan molecule and transfers the newly generated reducing end (the donor) to the non-reducing end of another 1,3-beta-glucan molecule (the acceptor) forming a 1,3-beta linkage, resulting in the elongation of 1,3-beta-glucan chains in the cell wall. Involved in cell wall biosynthesis and morphogenesis. Plays a key role in virulence. Covalently-linked GPI-modified cell wall protein (GPI-CWP). Transcript levels are elevated during host infection, and transiently increased after induction of hyphal formation with serum. Expression is controlled by CWT1 and induced by fluconazole. The GPI-anchor is attached to the protein in the endoplasmic reticulum and serves to target the protein to the cell surface. There, the glucosamine-inositol phospholipid moiety is cleaved off and the GPI-modified mannoprotein is covalently attached via its lipidless GPI glycan remnant to the 1,6-beta-glucan of the outer cell wall layer. Leads to decreased caspofungin sensitivity. Belongs to the glycosyl hydrolase 72 family.