Substance Holonyms:iodopsin retinal purple rhodopsin visual purple
Hypernyms:protein
Inherited Hypernyms:opsinproteinmacromoleculemoleculeunitthingphysical entityentity
Inherited Hypernyms:opsinproteinmacromoleculeorganic compoundcompoundchemicalmaterialsubstancematterphysical entityentity
Inherited Hypernyms:opsinproteinmacromoleculeorganic compoundcompoundchemicalmaterialsubstancepartrelationabstractionentity