Inactive chitinase-like protein that does not exhibit hydrolytic activity toward chitin (PubMed:25104038). Binds strongly to chitin and possesses antifungal activity toward the fungal pathogen Altenaria alternata in plate assays (PubMed:25104038). Inhibits the growth of Fusarium oxysporum on plate assays (PubMed:11940078). Probably involved in defense against fungal pathogens through a mechanism that only involves carbohydrate binding (PubMed:25104038). Causes an allergic reaction in human (PubMed:11940078). Binds to IgE from sera of patients allergic to rubber latex (PubMed:11940078). Belongs to the glycosyl hydrolase 19 family. Chitinase class I subfamily. Lacks the conserved Glu active site in position 136, which is replaced by an Ala residue, explaining why it is inactive.