Characterization of two genes encoding leucine-rich repeat-containing proteins in grass carp Ctenopharyngodon idellus

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	Characterization of two genes encoding leucine-rich repeat-containing proteins in grass carp Ctenopharyngodon idellus
	Chang, MX ; Nie, P ; Xie, HX ; Sun, BJ ; Gao, Q
刊名	IMMUNOGENETICS
	2005
卷号	56 期号:10 页码:710-721
关键词	GARP LRG LRR genome promoter grass carp
ISSN号	0093-7711
通讯作者	Nie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei Province, Peoples R China
中文摘要	The cDNAs and genes of two different types of leucine- rich repeat-containing proteins from grass carp ( Ctenopharyngodon idellus) were cloned. Homology search revealed that the two genes, designated as GC-GARP and GC-LRG, have 37% and 32% deduced aminoacid sequence similarities with human glycoprotein A repetitions predominant precursor ( GARP) and leucine-rich alpha2-glycoprotein (LRG), respectively. The cDNAs of GC-GARP and GC-LRG encoded 664 and 339 amino acid residues, respectively. GC-GARP and GC-LRG contain many distinct structural and/or functional motifs of the leucine- rich repeat (LRR) subfamily, such as multiple conserved 11-residue segments with the consensus sequence LxxLxLxxN/CxL ( x can be any amino acid). The genes GC-GARP and GC-LRG consist of two exons, with 4,782 bp and 2,119 bp in total length, respectively. The first exon of each gene contains a small 5'-untranslated region and partial open reading frame. The putative promoter region of GC-GARP was found to contain transcription factor binding sites for GATA-1, IRF4, Oct-1, IRF-7, IRF-1, AP1, GATA-box and NFAT, and the promoter region of GC-LRG for MYC-MAX, MEIS1, ISRE, IK3, HOXA9 and C/EBP alpha. Phylogenetic analysis showed that GC-GARP and mammalian GARPs were clustered into one branch, while GC-LRG and mammalian LRGs were in another branch. The GC-GARP gene was only detected in head kidney, and GC-LRG in the liver, spleen and heart in the copepod ( Sinergasilus major)- infected grass carp, indicating the induction of gene expression by the parasite infection. The results obtained in the present study provide insight into the structure of fish LRR genes, and further study should be carried out to understand the importance of LRR proteins in host - pathogen interactions.
英文摘要	The cDNAs and genes of two different types of leucine- rich repeat-containing proteins from grass carp ( Ctenopharyngodon idellus) were cloned. Homology search revealed that the two genes, designated as GC-GARP and GC-LRG, have 37% and 32% deduced aminoacid sequence similarities with human glycoprotein A repetitions predominant precursor ( GARP) and leucine-rich alpha2-glycoprotein (LRG), respectively. The cDNAs of GC-GARP and GC-LRG encoded 664 and 339 amino acid residues, respectively. GC-GARP and GC-LRG contain many distinct structural and/or functional motifs of the leucine- rich repeat (LRR) subfamily, such as multiple conserved 11-residue segments with the consensus sequence LxxLxLxxN/CxL ( x can be any amino acid). The genes GC-GARP and GC-LRG consist of two exons, with 4,782 bp and 2,119 bp in total length, respectively. The first exon of each gene contains a small 5'-untranslated region and partial open reading frame. The putative promoter region of GC-GARP was found to contain transcription factor binding sites for GATA-1, IRF4, Oct-1, IRF-7, IRF-1, AP1, GATA-box and NFAT, and the promoter region of GC-LRG for MYC-MAX, MEIS1, ISRE, IK3, HOXA9 and C/EBP alpha. Phylogenetic analysis showed that GC-GARP and mammalian GARPs were clustered into one branch, while GC-LRG and mammalian LRGs were in another branch. The GC-GARP gene was only detected in head kidney, and GC-LRG in the liver, spleen and heart in the copepod ( Sinergasilus major)- infected grass carp, indicating the induction of gene expression by the parasite infection. The results obtained in the present study provide insight into the structure of fish LRR genes, and further study should be carried out to understand the importance of LRR proteins in host - pathogen interactions.
学科主题	Genetics & Heredity; Immunology
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Genetics & Heredity ; Immunology
研究领域[WOS]	Genetics & Heredity ; Immunology
关键词[WOS]	DIFFERENTIATION ; ALPHA-2-GLYCOPROTEIN ; DROSOPHILA ; EXPRESSION ; RECEPTORS ; FAMILY ; TOLL
收录类别	SCI
语种	英语
WOS记录号	WOS:000226465800004
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9332]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei Province, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Lab Fish Dis, Wuhan 430072, Hubei Province, Peoples R China
推荐引用方式 GB/T 7714	Chang, MX,Nie, P,Xie, HX,et al. Characterization of two genes encoding leucine-rich repeat-containing proteins in grass carp Ctenopharyngodon idellus[J]. IMMUNOGENETICS,2005,56(10):710-721.
APA	Chang, MX,Nie, P,Xie, HX,Sun, BJ,&Gao, Q.(2005).Characterization of two genes encoding leucine-rich repeat-containing proteins in grass carp Ctenopharyngodon idellus.IMMUNOGENETICS,56(10),710-721.
MLA	Chang, MX,et al."Characterization of two genes encoding leucine-rich repeat-containing proteins in grass carp Ctenopharyngodon idellus".IMMUNOGENETICS 56.10(2005):710-721.