Advertisement - Continue reading below

Definition of "octapeptide" [octapeptide]

  • A polypeptide, such as angiotensin, that is composed of eight amino acids. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "octapeptide" in a sentence
  • "It is now commonly accepted that there are a group of peptides such as somatostatin (49, 50), substance P (51), vasoactive intestinal peptide (52) and cholecystokinin or its C-terminal octapeptide"
  • "In the case of CCK and its COOH-terminal octapeptide (CCK-8), both of which are biologically active, cleavage to the smaller form occurs at the COOH-terminal side of a single arginine residue (40)."
  • "We extended these studies and demonstrated that the peptides in the brain are not from the gastrin family or simply CCK-like, but are in fact intact cholecystokinin (CCK) and its COOH-terminal octapeptide (CCK-8) (43-45)."