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Large-Scale Discovery of non-conventional peptides in Maize and Arabidopsis through an Integrated Peptidogenomic Pipeline

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Molecular Plant 2020年第7期13卷 1078-1093页

作者： Shunxi Wang Lei Tian Haijun Liu Xiang Li Jinghua Zhang Xueyan Chen Xingmeng Jia Xu Zheng Shubiao Wu Yanhui Chen Jianbing Yan Liuji Wu National Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China School of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia

non-conventional peptides(NCPs),which include small open reading frame-encoded peptides,play critical roles in fundamental biological *** this study,we developed an integrated peptidogenomic pipeline using high-throughput mass spectra to probe a customized six-frame translation database and applied it to large-scale identification of NCPs in plants.A total of 1993 and 1860 NCPs were unambiguously identified in maize and Arabidopsis,*** NCPs showed distinct characteristics compared with conventional peptides and were derived from introns,3′UTRs,5′UTRs,junctions,and intergenic ***,our results showed that translation events in unannotated transcripts occur more broadly than previously *** addition,we found that dozens of maize NCPs are enriched within regions associated with phenotypic variations and domestication selection,indicating that they potentially are involved in genetic regulation of complex traits and domestication in *** together,our study developed an integrated peptidogenomic pipeline for large-scale identification of NCPs in plants,which would facilitate global characterization of NCPs from other *** identification of large-scale NCPs in both monocot(maize)and dicot(Arabidopsis)plants indicates that a large portion of plant genome can be translated into biologically functional molecules,which has important implications for functional genomic studies.

关键词： non-conventional peptides small open reading frames peptidogenomics mass spectrometry six-frame translation plants

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