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- W2001422402 abstract "Mammalian platelets contain an array of antimicrobial peptides, termed platelet microbicidal proteins (PMPs). Human and rabbit PMPs include known chemokines, such as platelet factor-4 (hPF-4); PMP-1 is the rabbit orthologue of hPF-4. Chemokines that also exert direct antimicrobial activity have been termed kinocidins. A consensus peptide domain library representing mammalian PF-4 family members was analyzed to define structural domains contributing to antimicrobial activity against a panel of human pathogens. Secondary conformations were assessed by circular dichroism spectrometry, and molecular modeling was employed to investigate structural correlates of antimicrobial efficacy. Antimicrobial activity against isogenic peptide-susceptible or -resistant Staphylococcus aureus, Salmonella typhimurium, and Candida albicans strain pairs mapped to the C-terminal hemimer (38–74) and modular domains thereof (49–63 and 60–74). Increasing electrostatic charge and steric bulk were general correlates of efficacy. Structural data corroborated spatial distribution of charge, steric bulk and putative secondary structure with organism-specific efficacy. Microbicidal efficacies of the cPMP antimicrobial hemimer and C-terminal peptide (60–74) were retained in a complex human-blood biomatrix assay. Collectively, these results suggest that modular determinants arising from structural components acting independently and cooperatively govern the antimicrobial functions of PF-4 family kinocidins against specific target pathogens." @default.
- W2001422402 created "2016-06-24" @default.
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- W2001422402 date "2007-03-01" @default.
- W2001422402 modified "2023-10-07" @default.
- W2001422402 title "Modular determinants of antimicrobial activity in platelet factor-4 family kinocidins" @default.
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- W2001422402 doi "https://doi.org/10.1016/j.bbamem.2006.11.010" @default.
- W2001422402 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2827485" @default.
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