Journal of Heredity Advance Access published online on January 8, 2009
Journal of Heredity, doi:10.1093/jhered/esn112
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Brief Communication |
Sequence Analysis and Polymorphism Discovery in 4 Members of the Bovine Cathelicidin Gene Family
From the Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, TX 77843-4467
Address correspondence to James E. Womack at the address above, or e-mail: jwomack{at}cvm.tamu.edu.
Cathelicidins (CATHLs) are small, cationic antimicrobial peptides that establish an early innate immune defense against infections in mammals. Beyond their wide spectrum of antimicrobial activity, these peptides play important roles in wound repair, chemotactic activity, and apoptosis. Thus, polymorphisms present in bovine CATHLs 2, 5, 6, and 7 could potentially underlie inherited differences in innate immunity and disease resistance. The purpose of the present study was to characterize single nucleotide polymorphisms (SNPs) and insertion–deletion (indel) polymorphisms within the bovine CATHL gene family. Comparative sequence analysis for 10 domestic cattle breeds representing both Bos taurus and Bos indicus revealed 60 SNPs, 7 of which were nonsynonymous and 5 indel mutations. Characterization of these novel polymorphisms is central to developing a firm understanding regarding what effects, if any, nonsynonymous CATHL variation has with respect to bovine innate immunity.
Key Words: antimicrobial peptide cathelicidin cattle innate immunity
Corresponding Editor: Ernest Bailey
Received August 19, 2008
Revised December 1, 2008
Accepted December 5, 2008