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  • Title: Characterization of two isoforms of Japanese spiny lobster Panulirus japonicus defensin cDNA.
    Author: Pisuttharachai D, Yasuike M, Aono H, Yano Y, Murakami K, Kondo H, Aoki T, Hirono I.
    Journal: Dev Comp Immunol; 2009 Apr; 33(4):434-8. PubMed ID: 19073210.
    Abstract:
    Antimicrobial peptides (AMPs) are components of the innate immune responses that form the first line of host defense against pathogens. In this study, cDNAs of two new isoforms of defensin (designated PJD1 and PJD2) from a Japanese spiny lobster Panulirus japonicus haemocytes cDNA library were cloned and sequenced. PJD1 and PJD2 consist of 656 and 673 nucleotides encoding putative proteins of 66 and 64 amino acids, respectively. The isoforms share 74.2% amino acid identity. In a phylogenetic analysis, the peptides clustered with vertebrate defensins and were closely mostly related to chicken beta-defensin. PJD1 and PJD2 were detected in all tissues examined including heart, nerves, intestine, haemocytes, gills and hepatopancreas.
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