摘要
利用Cbx家族基因高度保守的Chromo结构域氨基酸序列作为种子序列,检索斑点叉尾鮰(Ictalurus punetaus)基因组注释的蛋白数据库,共鉴定分离出14个Cbx基因。并在全基因组水平对斑点叉尾鮰Cbx基因家族进行了保守结构域序列、进化、基因结构、染色体定位的系统分析。本研究中鉴定出的斑点叉尾鮰Cbx家族基因蛋白序列与已知的人类、小鼠、鸡、斑马鱼等物种Cbx蛋白序列构建系统进化树。根据系统进化树分析结果,14个斑点叉尾鮰Cbx基因分成两个亚族,5个隶属于Hp1s亚族,9个隶属于PcGs亚族。Cbx基因主要分布于斑点叉尾鮰7条染色体中,且呈不均匀分布。本研究对于后续斑点叉尾鮰Cbx基因家族深入的功能验证及分子作用机制研究具有重要的意义,也为日益丰富的水产基因组资源的挖掘利用提供了参考。
Chromobox(Cbx)family proteins are transcriptional repressors that play diverse regulatory roles in epigenetic and developmental processes.In the study,we aimed to identify the Cbx family members in the channel catfish genome and analyze their phylogenetic patterns.Cbx genes were identified from the whole genome of channel catfish(Ictalurus punetaus)by bioinformatics methods.A total of 14 Cbx genes were identified.The obtained amino acid sequences were analyzed with DNAMAN 5.0,WebLogo 3,MEGA 5.1,MapInspect and MEME bioinformatics softwares.A phylogenetic analysis was conducted based on the alignment of the Cbx proteins from Ictalurus punetaus,Homo sapiens,Mus musculus,Gallus gallus,Danio rerio and so on.14 Cbx genes divided into two subgroups based on phylogenetic analyses,five members in Hp1s subgroup and nine members in Pc Gs subgroup,and distributed on seven chromosomes.This study puts forward a comprehensive overview of the Cbx gene family in channel catfish and provides new insights into the formation of this gene family.
作者
张世勇
陈校辉
王明华
钟立强
秦钦
邵俊杰
刘洪岩
王江
边文冀
Jiang Hucheng
Zhang Shiyong;Chen Xiaohui;Wang Minghua;Zhong Liqiang;Qin Qin;Shao Junjie;Liu Hongyan;Wang Jiang;Jiang Hucheng(Freshwater Fisheries Research Institute of Jiangsu Province,Nanjing,210017;The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm,Nanjing,210014;College of animal science and technology,Yangzhou University,Yangzhou,225009)
出处
《基因组学与应用生物学》
CAS
CSCD
北大核心
2019年第4期1488-1496,共9页
Genomics and Applied Biology
基金
国家现代农业产业技术体系专项资金(CARS-46)
江苏省农业科技自主创新基金(CX(15)1013)
江苏省六大人才高峰项目(2014-NY-008)共同资助
