Article ; Online: Peptidomic analysis of the host-defense peptides in skin secretions of the Amazon River frog Lithobates palmipes (Ranidae).
Comparative biochemistry and physiology. Part D, Genomics & proteomics
2023 Volume 46, Page(s) 101069
Abstract: Skin secretions of certain frog species represent a source of host-defense peptides (HDPs) with therapeutic potential and their primary structures provide insight into taxonomic and phylogenetic relationships. Peptidomic analysis was used to characterize ...
Abstract | Skin secretions of certain frog species represent a source of host-defense peptides (HDPs) with therapeutic potential and their primary structures provide insight into taxonomic and phylogenetic relationships. Peptidomic analysis was used to characterize the HDPs in norepinephrine-stimulated skin secretions from the Amazon River frog Lithobates palmipes (Ranidae) collected in Trinidad. A total of ten peptides were purified and identified on the basis of amino acid similarity as belonging to the ranatuerin-2 family (ranatuerin-2PMa, -2PMb, -2PMc, and-2PMd), the brevinin-1 family (brevinin-1PMa, -1PMb, -1PMc and des(8-14)brevinin-1PMa) and the temporin family (temporin-PMa in C-terminally amidated and non-amidated forms). Deletion of the sequence VAAKVLP from brevinin-1PMa (FLPLIAGVAAKVLPKIFCAISKKC) in des[(8-14)brevinin-1PMa resulted in a 10-fold decrease in potency against Staphylococcus aureus (MIC = 31 μM compared with 3 μM) and a > 50-fold decrease in hemolytic activity but potency against Echerichia coli was maintained (MIC = 62.5 μM compared with 50 μM). Temporin-PMa (FLPFLGKLLSGIF.NH |
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MeSH term(s) | Animals ; Amino Acid Sequence ; Phylogeny ; Staphylococcus aureus/metabolism ; Ranidae/metabolism ; Amphibian Proteins/metabolism ; Skin/metabolism |
Chemical Substances | Amphibian Proteins |
Language | English |
Publishing date | 2023-02-24 |
Publishing country | Netherlands |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2212119-5 |
ISSN | 1878-0407 ; 1744-117X |
ISSN (online) | 1878-0407 |
ISSN | 1744-117X |
DOI | 10.1016/j.cbd.2023.101069 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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