on the basis of four criteria ( electroporetic mobility , membrane location , binding of concanavalin a , and mobility shifts with sh oxidation ) , the 220-kda protein appears to correspond to the membrane protein previously identified at the rims of rod disks [ papermaster , d.s. , schneider , b.g. , zorn , m.a . & kraehenbuhl , j.p. ( 1978 ) j. cell biol . 78 , 415-425 ] .
C0033684
protein
C0025252
membrane protein