Probable inactive chitinase-like protein that does not exhibit hydrolytic activity toward chitin (By similarity). May bind chitin and be involved in plant defense against fungal pathogens (By similarity). Causes an allergic reaction in human (PubMed:12653800). Binds to IgE from sera of patients allergic to rubber latex (PubMed:12653800). Belongs to the glycosyl hydrolase 19 family. Chitinase class I subfamily. Lacks the conserved Glu active site in position 117, which is replaced by an Ala residue, explaining why it is inactive.