Peptidomics and genomics analysis of novel antimicrobial peptides from the frog,Rana nigrovittata |
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Authors: | Yufang Ma Cunbao Liu Xiuhong Liu Jing Wu Hailong Yang Yipeng Wang Jianxu Li Haining Yu Ren Lai |
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Institution: | 1. Biotoxin Units of Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China;2. Life Sciences College of Nanjing Agricultural University, Nanjing 210095, Jiangsu, China;3. College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, China;4. Graduate School of the Chinese Academy of Sciences, Beijing 100009, China |
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Abstract: | Much attention has been paid on amphibian peptides for their wide-ranging pharmacological properties, clinical potential, and gene-encoded origin. More than 300 antimicrobial peptides (AMPs) from amphibians have been studied. Peptidomics and genomics analysis combined with functional test including microorganism killing, histamine-releasing, and mast cell degranulation was used to investigate antimicrobial peptide diversity. Thirty-four novel AMPs from skin secretions of Rana nigrovittata were identified in current work, and they belong to 9 families, including 6 novel families. Other three families are classified into rugosin, gaegurin, and temporin family of amphibian AMP, respectively. These AMPs share highly conserved preproregions including signal peptides and spacer acidic peptides, while greatly diversified on mature peptides structures. In this work, peptidomics combined with genomics analysis was confirmed to be an effective way to identify amphibian AMPs, especially novel families. Some AMPs reported here will provide leading molecules for designing novel antimicrobial agents. |
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