EOG8N06V1 GO:0020037 1/69 heme binding molecular_function "Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring." [CHEBI:30413, GOC:ai] EOG8N06V1 GO:0019825 1/69 oxygen binding molecular_function "Interacting selectively and non-covalently with oxygen (O2)." [GOC:jl]