the melanotropin ( msh ) receptor of mouse b16-f1 melanoma cells was characterized by photoaffinity cross-linking , using a potent alpha-msh photolabel , [ norleucine4 , d-phenylalanine7 , 1'- ( 2-nitro-4-azidophenylsulfenyl ) -tryptophan9 ] -alpha-melanotropin ( naps-msh ) .
C0026667
melanotropin
C0002302
alpha-melanotropin