Probable glycosidase that plays a role in cell wall architecture. Required for the transfer of chitin to 1,6-beta-glucan in the cell wall. Covalently-linked GPI-modified cell wall protein (GPI-CWP), localized particularly in chitin-rich areas. Found at the incipient bud site, around the septum area in later stages of budding, and in ascospore envelopes. Redistributes uniformly over the cell cortex upon heat stress. Positively regulated by cell integrity signaling through MPK1 in response to cell wall perturbation. Induced by heat stress. 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. Present with 44000 wall-bound molecules/cell in log phase YPD medium. Belongs to the glycosyl hydrolase 16 family. CRH1 subfamily.