previous studies ( gentry , l. e. , lioubin , m. n. , purchio , a. f. , and marquardt , h. ( 1988 ) mol . cell . biol . 8 , 4162-4168 ) with purified recombinant tgf-beta 1 ( rtgf-beta 1 ) precursor produced by chinese hamster ovary ( cho ) cells revealed that cys-33 can form a disulfide bond with at least 1 cysteine residue in mature tgf-beta 1 , contributing to the formation of a 90-110-kda protein .
C0080222
rtgf-beta 1
C1366557
1