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FIGURE 8-6 Amino acid sequences of the secretin peptide hormone family, including secretin, glucagon, vasoactive intestinal peptide (VIP), and gastrointestinal-inhibitory peptide (GIP).

FIGURE 8-7 Organization of preprosecretin. [The information was abstracted from Kopin, A. S., Wheeler, M. B., and Leiter, A. B. (1990). Secretin: Structure of the precursor and tissue distribution. Proc. Nat. Acad. Sei. USA 87, 2299-2303.]

18 29 56 128

h2n-

Signal peptide

N-terminal peptide

Secretin

C-terminai extension

0 0

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