obsolete catabolism by host of symbiont cell wall chitin https://github.com/geneontology/go-ontology/issues/21469 true This term was obsoleted because it represents a molecular function. GO:0052356 biological_process OBSOLETE. The chemical reactions and pathways performed by an organism resulting in the breakdown of chitin in the symbiont cell wall. The symbiont is defined as the smaller of the organisms involved in a symbiotic interaction.