Elsie C. Jimenez* Pages 622 - 637 ( 16 )
All life forms typically possess homochirality, with rare exceptions. In the case of peptides and proteins, only L-amino acids are known to be encoded by genes. Nevertheless, D-amino acids have been identified in a variety of peptides, synthesized by animal cells. They include neuroexcitatory and neuroprotective peptides, cardioexcitatory peptides, hyperglycemic hormones, opioid peptides, antimicrobial peptides, natriuretic and defensin-like peptides, and fibrinopeptides. This article is a review of their occurrence, structure and bioactivity. It further explores the pharmacology and potential medical applications of some of the peptides.
D-amino acid, achatin, conotoxin, agatoxin, crustacean hyperglycemic hormone, dermorphin and deltorphin, natriuretic and defensin-like peptides, fibrinopeptide.
Department of Physical Sciences, College of Science, University of the Philippines Baguio, Baguio City 2600