International Journal of Peptide Research and Therapeutics, ( ISI ), Volume (18), No (2), Year (2012-4) , Pages (107-115)

Title : ( Identification and Characterization of Novel Antibacterial Peptides from Skin Secretions of Euphlyctis cyanophlyctis )

Authors: Ahmad Asoodeh , Adel Ghorani Azam , JamshidKhan Chamani ,

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In this study, we extracted and purified antimicrobial peptides (AMPs) secreted from skin of Euphlyctis cyanophlyctis using reverse phase-high performance liquid chromatography. Three AMPs were isolated from skin secretions of this frog and sequenced using tandem mass spectrometry. The purified peptides were named buforin-EC (1875.05 ± 0.5 Da), cyanophlyctin (2347.50 ± 0.5 Da) and temporin-ECa (1013.33 ± 0.5 Da). Multiple alignments and homology search showed that buforin-EC, cyanophlyctin and temporin-ECa had a homology of 71.43, 47.1, and 69.23% to buforin II, brevinin-2EC, and temporin- 1CSc, respectively. Antimicrobial tests demonstrated that our peptides have a great antimicrobial effect on both grampositive and gram-negative bacteria. The results indicated that they have an overall minimum inhibitory concentration (MIC) below 13 micromolar against E. coli. No hemolysis was observed in around of their MIC values. In conclusion, skin secretions of E. cyanophlyctis contain a novel class of AMPs with the proper characteristics.

Keywords

, Antimicrobial peptides, Euphlyctis cyanophlyctis, Hemolysis Minimum inhibitory concentration (MIC),
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@article{paperid:1027753,
author = {Asoodeh, Ahmad and Ghorani Azam, Adel and JamshidKhan Chamani},
title = {Identification and Characterization of Novel Antibacterial Peptides from Skin Secretions of Euphlyctis cyanophlyctis},
journal = {International Journal of Peptide Research and Therapeutics},
year = {2012},
volume = {18},
number = {2},
month = {April},
issn = {1573-3149},
pages = {107--115},
numpages = {8},
keywords = {Antimicrobial peptides; Euphlyctis cyanophlyctis; Hemolysis Minimum inhibitory concentration (MIC); RP-HPLC},
}

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%0 Journal Article
%T Identification and Characterization of Novel Antibacterial Peptides from Skin Secretions of Euphlyctis cyanophlyctis
%A Asoodeh, Ahmad
%A Ghorani Azam, Adel
%A JamshidKhan Chamani
%J International Journal of Peptide Research and Therapeutics
%@ 1573-3149
%D 2012

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