Amphibian skin is directly exposed to different environments. Amphibians interact with
environmental factors including microorganisms, parasites, predators, and physical factors …

Antimicrobial peptides isolated from vertebrates provide defense against pathogenic
microorganisms by using both nonspecific physical barriers and highly-specific responses of …

This review gives a historical perspective, summarizing approximately 25 years of research
on opioids. The “typical” opioid peptides produced in the brain,“atypical” opioids encrypted …

Materials and Methods Purification of Dermaseptin from Frog Skin Extracts. Two
Phyllomedusa Sauvagii driedskins (1 g per skin) were minced with scissors andextracted 3 …

d-amino acids have been detected in a variety of peptides synthesized by animal cells.
These include opiate and antimicrobial peptides from amphibian skin, neuropeptides from …

The toad, ugly and venomous, wears yet a precious jewel in his skin - ScienceDirect Skip to
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Cyclooxygenase (Cox) exists in two forms in human endothelial cells (HUVEC). We have
raised antibodies that recognize the sequence of the carboxyl-terminal portion of the human …

The homochirality of biological amino acids (L-amino acids) andof the RNA/DNA backbone
(D-ribose) might have become establishedbefore the origin of life. It has been considered …

Since the discovery of the endogenous opioid peptides (H ughes et al. 1975b), our
understanding of the mode of action of opioids has advanced rapidly. It is now known that in …

In this report, we document for the first time the occurrence of D-tryptophan in a normally
translated polypeptide, contryphan. The peptide, isolated from the venom of the fish-hunting …