title: Identification of the active site polypeptide in labeled photoreceptor membranes digested with papain.
mesh_terms: D000818:Animals; D001665:Binding Sites; D002417:Cattle; D008566:Membranes / Q000378:metabolism; D010206:Papain; D010446:Peptide Fragments / Q000032:analysis; D010455:Peptides / Q000302:isolation & purification; D010786:Photoreceptor Cells / Q000378:metabolism*; D012168:Retinal Pigments / Q000378:metabolism; D012243:Rhodopsin / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D010446:Peptide Fragments; D010455:Peptides; D012168:Retinal Pigments; D012243:Rhodopsin; D010206:Papain