| Literature DB >> 15808900 |
Rachid Daoud1, Veronique Dubois, Loredana Bors-Dodita, Naima Nedjar-Arroume, Francois Krier, Nour-Eddine Chihib, Patrice Mary, Mostafa Kouach, Gilbert Briand, Didier Guillochon.
Abstract
Peptic digestion of bovine hemoglobin at low degree of hydrolysis yields an intermediate peptide fraction exhibiting antibacterial activity against Micrococcus luteus A270, Listeria innocua, Escherichia coli and Salmonella enteritidis after separation by reversed-phase HPLC. From this fraction a pure peptide was isolated and analyzed by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) and electrospray ionization tandem mass spectrometry (ESI-MS/MS). This peptide correspond to the 107-136 fragment of the alpha chain of bovine hemoglobin. The minimum inhibitory concentrations (MIC) towards the four strains and its hemolytic activity towards bovine erythrocytes were determined. A MIC of 38 microM was reported against L. innocua and 76 microM for other various bacterial species. This peptide had no hemolytic activity up to 380 microM concentration.Entities:
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Year: 2005 PMID： 15808900 DOI： 10.1016/j.peptides.2004.12.008
Source DB: PubMed Journal: Peptides ISSN： 0196-9781 Impact factor: 3.750