Distribution and regulation of rat insulin-like growth factor I messenger ribonucleic acids encoding alternative carboxyterminal E-peptides: evidence for differential processing and regulation in liver.


Alternative splicing of insulin-like growth factor I (IGF-I)/somatomedin C mRNAs generates two IGF-I mRNAs coding for IGF-I peptides with different sequences in the E domain of the IGF-I prohormone. These two mRNAs encode alternative E peptides due to the presence (IGF-Ib) or absence (IGF-Ia) of a 52-base insert in the region coding for the E domain. We… (More)


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