[Objective] The aim of this study was to reveal the relationship between inihibin （INH） α precursor gene and seasonal reproduction of goats, and investigate the evolutionary conservation of INHα precursor gene. [ ...[Objective] The aim of this study was to reveal the relationship between inihibin （INH） α precursor gene and seasonal reproduction of goats, and investigate the evolutionary conservation of INHα precursor gene. [ Method] Cloning and sequence analysis of 5＇ flanking region and exon of inihibinα （INHE） precursor gene in twenty ewes between non-seasonal estrous breed （Haimen goats） and seasonal estrous breed （Anhui white goats） was analyzed in this study. [ Result] Compared with Anhui white goats, INHα precursor gene in Haimen goats had three SNP but no amino acid change, while its nucleotide homology was 99.7% and amino acid homology was 100%. The nucleotide homology of INHα precursor gene in goat, cattle, pig, person, chicken, horse, rat and dog ranged from 12.7% to 96.5%. [ Conclusion] INHα precursor gene tends to be highly conserved in species, and any change of nucleotide and amino acid maybe directly influence the function of the whole gene coding and regulation.展开更多
2,4-dienoyl-CoA reductase 1 （ DECR1 ） is the key rate-limiting enzyme in the metabolism of polyunsaturated fatty acids. Although this protein has been studied in a variety of mammals, its role in por- cine is yet to...2,4-dienoyl-CoA reductase 1 （ DECR1 ） is the key rate-limiting enzyme in the metabolism of polyunsaturated fatty acids. Although this protein has been studied in a variety of mammals, its role in por- cine is yet to be fully elucidated. However, it is a candidate determinant/indicator of meat quality, growth traits, and carcass quality. Here, we employed RT-PCR and rapid amplification of cDNA ends （RACE） analysis to amplify the full-length cDNA of DECR1 from Mashen pig liver, and cloned it into the expression vector pET-32a＋. After confirmation by sequencing and restriction analysis, the recombinant plasmid was transformed into E. coli BL21 cells. The cDNA of pig DECR1 contained 2,352 nucleotides, including a 987 bp open reading frame flanked by a 53 bp 5＇-untranslated region （UTR） and a 1,312 bp 3＇-UTR. The pig DECR1 coding sequence encoded 328 amino acid residues, which shared 99%, 88%, 87%, 87%, 87%, 87%, and 83% identity with those of Sus scrofa （predicted）, Bos taurus, Homo sapiens, Macaca mulatta, Pan troglodytes, Equus caballus, Canis, and Mus musculus, respectively. SDS-PAGE analysis revealed that the recombinant protein was expressed and that the expression level reached its highest level after 4 h induction. Western blot analysis indicated that the molecular weight of the expressed protein was the same as that predicted, ap- proximately 35 kDa. Collectively these data provide the basis for further studies into the physiological functions and molecular mechanisms of the pig DE- CR1 gene.展开更多
DGAT酶是催化TAG合成途径即Kennedy途径中唯一的限速酶。根据已报道油茶DGAT1基因部分cDNA序列设计引物,利用RT-PCR和RACE技术,对油茶DGAT1基因进行克隆及序列分析。结果表明:该基因序列全长为2 046 bp,包含1个完整的1 548 bp ORF及269 ...DGAT酶是催化TAG合成途径即Kennedy途径中唯一的限速酶。根据已报道油茶DGAT1基因部分cDNA序列设计引物,利用RT-PCR和RACE技术,对油茶DGAT1基因进行克隆及序列分析。结果表明:该基因序列全长为2 046 bp,包含1个完整的1 548 bp ORF及269 bp 5’UTR和229 bp 3’UTR,编码515个氨基酸;该基因被命名为co-dagt1。经过比对分析,发现油茶的DGAT1基因具有DGAT1基因特有的保守序列和相关特征,而且与其他植物的DGAT1基因具有较高的相似性,并对其蛋白质序列和理化性质进行了分析。展开更多
根据樟叶越桔Vaccinium dunalianum叶芽转录组测序实验获得的糖基转移酶Vd UGT1基因部分c DNA序列设计引物,采用RACE-PCR技术克隆了全长1 620 bp c DNA序列的Vd UGT1基因,包括1 398 bp c DNA序列的完整开放阅读框,推测编码由465个氨基...根据樟叶越桔Vaccinium dunalianum叶芽转录组测序实验获得的糖基转移酶Vd UGT1基因部分c DNA序列设计引物,采用RACE-PCR技术克隆了全长1 620 bp c DNA序列的Vd UGT1基因,包括1 398 bp c DNA序列的完整开放阅读框,推测编码由465个氨基酸残基组成、相对分子质量为50.89 k D的糖基转移酶Vd UGT1。序列分析表明,Vd UGT1理论等电点为5.53,负电荷残基(Asp+Glu)总数为53个,正电荷残基(Arg+Lys)总数为41个,不稳定系数为48.38,属于不稳定蛋白;其二级结构的主要构件为α-螺旋和随机卷曲,无跨膜结构域,属于亲水性蛋白质。Vd UGT1位于C末端含有尿嘧啶核苷二磷酸糖基转移酶所特有UDPGT功能域,推测与尿嘧啶核苷二磷酸糖的结合有关。该研究为后期Vd UGT1的异源表达和功能研究奠定了基础。展开更多
基金Supported by Natural Science Foundation of Jiangsu Province(BK2007561)~~
文摘[Objective] The aim of this study was to reveal the relationship between inihibin （INH） α precursor gene and seasonal reproduction of goats, and investigate the evolutionary conservation of INHα precursor gene. [ Method] Cloning and sequence analysis of 5＇ flanking region and exon of inihibinα （INHE） precursor gene in twenty ewes between non-seasonal estrous breed （Haimen goats） and seasonal estrous breed （Anhui white goats） was analyzed in this study. [ Result] Compared with Anhui white goats, INHα precursor gene in Haimen goats had three SNP but no amino acid change, while its nucleotide homology was 99.7% and amino acid homology was 100%. The nucleotide homology of INHα precursor gene in goat, cattle, pig, person, chicken, horse, rat and dog ranged from 12.7% to 96.5%. [ Conclusion] INHα precursor gene tends to be highly conserved in species, and any change of nucleotide and amino acid maybe directly influence the function of the whole gene coding and regulation.
文摘2,4-dienoyl-CoA reductase 1 （ DECR1 ） is the key rate-limiting enzyme in the metabolism of polyunsaturated fatty acids. Although this protein has been studied in a variety of mammals, its role in por- cine is yet to be fully elucidated. However, it is a candidate determinant/indicator of meat quality, growth traits, and carcass quality. Here, we employed RT-PCR and rapid amplification of cDNA ends （RACE） analysis to amplify the full-length cDNA of DECR1 from Mashen pig liver, and cloned it into the expression vector pET-32a＋. After confirmation by sequencing and restriction analysis, the recombinant plasmid was transformed into E. coli BL21 cells. The cDNA of pig DECR1 contained 2,352 nucleotides, including a 987 bp open reading frame flanked by a 53 bp 5＇-untranslated region （UTR） and a 1,312 bp 3＇-UTR. The pig DECR1 coding sequence encoded 328 amino acid residues, which shared 99%, 88%, 87%, 87%, 87%, 87%, and 83% identity with those of Sus scrofa （predicted）, Bos taurus, Homo sapiens, Macaca mulatta, Pan troglodytes, Equus caballus, Canis, and Mus musculus, respectively. SDS-PAGE analysis revealed that the recombinant protein was expressed and that the expression level reached its highest level after 4 h induction. Western blot analysis indicated that the molecular weight of the expressed protein was the same as that predicted, ap- proximately 35 kDa. Collectively these data provide the basis for further studies into the physiological functions and molecular mechanisms of the pig DE- CR1 gene.
文摘DGAT酶是催化TAG合成途径即Kennedy途径中唯一的限速酶。根据已报道油茶DGAT1基因部分cDNA序列设计引物,利用RT-PCR和RACE技术,对油茶DGAT1基因进行克隆及序列分析。结果表明:该基因序列全长为2 046 bp,包含1个完整的1 548 bp ORF及269 bp 5’UTR和229 bp 3’UTR,编码515个氨基酸;该基因被命名为co-dagt1。经过比对分析,发现油茶的DGAT1基因具有DGAT1基因特有的保守序列和相关特征,而且与其他植物的DGAT1基因具有较高的相似性,并对其蛋白质序列和理化性质进行了分析。
文摘根据樟叶越桔Vaccinium dunalianum叶芽转录组测序实验获得的糖基转移酶Vd UGT1基因部分c DNA序列设计引物,采用RACE-PCR技术克隆了全长1 620 bp c DNA序列的Vd UGT1基因,包括1 398 bp c DNA序列的完整开放阅读框,推测编码由465个氨基酸残基组成、相对分子质量为50.89 k D的糖基转移酶Vd UGT1。序列分析表明,Vd UGT1理论等电点为5.53,负电荷残基(Asp+Glu)总数为53个,正电荷残基(Arg+Lys)总数为41个,不稳定系数为48.38,属于不稳定蛋白;其二级结构的主要构件为α-螺旋和随机卷曲,无跨膜结构域,属于亲水性蛋白质。Vd UGT1位于C末端含有尿嘧啶核苷二磷酸糖基转移酶所特有UDPGT功能域,推测与尿嘧啶核苷二磷酸糖的结合有关。该研究为后期Vd UGT1的异源表达和功能研究奠定了基础。
