共查询到20条相似文献，搜索用时 31 毫秒
1.
L.J. Royo I. Álvarez I. Fernández J.J. Arranz E. Gómez & F. Goyache 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2005,122(5):357-360
The aim of this study was to ascertain the role of the Agouti signaling peptide (ASIP) gene coding region in the Agouti locus variation within wild‐type coat colour in cattle. We determined the Extension genotype in 241 individuals from six Spanish and three French brown cattle breeds representative of wild‐type coat variation. Polymerase chain reaction–single‐strand conformation polymorphism (PCR‐SSCP) analysis was carried out in individuals of each Extension genotypes within the same breed in an attempt to identify variants in the three coding exons of the ASIP gene. No SSCP variants were found. Results were confirmed by sequencing the coding exons of the ASIP gene in 20 individuals. Our results suggest that the ASIP coding region does not play a central role in coat colour variation in cattle. 相似文献
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从猪肌生成抑制素(MSTN)cDNA序列中设计引物。以pMD18-T-MSTN质粒为模板，PCR扩增猪MSTN成熟蛋白编码序列，该片段全长1095bp。将所得片段与pMD18-T载体连接，构建重组质粒pMT—mpMSTN，将其转化到大肠杆菌DH5a中，成功地筛选到阳性克隆。双酶切重组质粒pMT—mpMSTN和真核表达载体pcDNA3．1，连接目的片段与载体pcDNA3．1，转化大肠杆菌DH5a，经酶切、PCR及测序分析，表明成功地构建了真核表达质粒pcDNA3．1-mpMSTN。 相似文献
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文章对山羊肌生成抑制素基因(MSTN)外显子1、2、3及部分内含子扩增后克隆测序,得出:山羊肌生成抑制素基因外显子全长1 128 bp,编码375个氨基酸,并与其它7种哺乳动物比较发现,各物种MSTN基因同源性在90%以上,编码序列及编码氨基酸的差异,外显子1差异最大,外显子3差异最小。 相似文献
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This study was aimed to analyze the structure and function of BMPR-IB gene coding protein by bioinformatics. The primary structure, secondary structure, subcellular localization, tertiary structure, important functional motifs and functional classification of BMPR-IB gene coding protein in goat were predicted and analyzed by online softwares. Phylogenetic tree of BMPR-IB gene coding proteins of different species were constructed by maximum likelihood method and phylogenetic analysis was performed.The results showed that the goat BMPR-IB gene encoded 502 amino acids, its coding protein belonged to an unstable hydrophilic protein. Secondary structure was mainly beta-sheet (63.5%). The protein was mainly located in the nucleus, and also distributed in mitochondria, cytoplasm, vesicle secretion system and plasma membrane. The proteins mainly played the roles of purine and pyrimidine, regulation, transport and binding, signal transduction and so on. There were one transmembrane domains in the location of 127th to 149th amino acids, the GS domain in the location of 174th to 203th amino acids and the protein kinase domain in the location of 204th to 494th amino acids were highly conserved motifs. The tertiary structure consisted of sheet fragment structure enrichment domain and helix helical structure enrichment domain. The results of phylogenetic analysis of BMPR-IB gene in different species was consistent with the results of animal taxonomy, and suggested that BMPR-IB gene was associated with the fertility traits. The structure and function of BMPR-IB gene coding protein in goat were analyzed by different online prediction software, which provided theoretical guidance for further study ofBMPR-IB gene. 相似文献
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试验旨在利用生物信息学方法分析山羊骨形态发生蛋白受体IB（bone morphogenetic protein receptor IB,BMPR-IB）基因编码蛋白的结构及功能。本研究通过在线软件预测和分析山羊BMPR-IB基因编码蛋白的一级结构、二级结构、亚细胞定位、三级结构、重要的功能基序及其分类,通过最大似然法对不同物种BMPR-IB基因编码蛋白序列构建系统发育树,进行系统发育分析。结果发现,山羊BMPR-IB基因共编码502个氨基酸,其编码蛋白属于不稳定的亲水性蛋白质。二级结构以β折叠为主,比例为63.5%,主要存在于细胞核中,在线粒体、细胞质、囊泡分泌系统和质膜中也有少量分布。该蛋白主要发挥嘌呤和嘧啶、监管、运输和结合、信号转导等功能。在127-149氨基酸位置存在1个跨膜结构域;在174-203、204-494氨基酸位置存在2个高度保守的基序,分别为GS结构域和蛋白激酶结构域。三级结构由sheet片段结构富集域和helix螺旋结构富集域组成。不同物种BMPR-IB基因系统发育分析结果与动物学分类结果一致,提示BMPR-IB基因与繁殖力性状存在联系。通过不同的在线预测软件分析了山羊BMPR-IB基因编码蛋白的结构及功能,为深入研究BMPR-IB基因提供理论指导。 相似文献
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In order to investigate the genetic variation between Tritrichomonas foetus from bovine and feline origins, cysteine protease 8 (CP8) coding sequence was selected as the polymorphic DNA marker. Direct sequencing of CP8 coding sequence of T. foetus from four feline isolates and two bovine isolates with polymerase chain reaction successfully revealed conserved nucleotide polymorphisms between feline and bovine isolates. These results provide useful information for CP8-based molecular differentiation of T. foetus genotypes. 相似文献
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Kaleczyc J Pidsudko Z Franke-Radowiecka A Sienkiewicz W Majewski M Lakomy M Timmermans JP 《Polish journal of veterinary sciences》2004,7(3):199-201
The present study investigated the chemical coding of neurons in the celiac-superior mesenteric ganglion complex supplying the normal (n=4) and inflamed (n=4) ileum (chemically-induced inflammation) in juvenile pigs using retrograde tracing combined with immunohistochemistry. Ileum-projecting neurons (IPN) were predominantly distributed in the left and right superior mesenteric pools of the ganglion. The majority of them were adrenergic (tyrosine hydroxylase-positive) and also contained neuropeptide Y, somatostatin or galanin. No clear-cut differences in the distribution and chemical coding of IPN were found between normal and inflamed pigs. However, in the inflamed group, the density of peptidergic, IPN-associated nerve fibres was higher than that found in the control group. 相似文献
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云岭黑山羊BMPR-IB基因部分编码区的克隆及多态性分析 总被引：4，自引：0，他引：4
应用RT-PCR方法从云岭黑山羊卵巢组织克隆与产羔性状相关的BMPR-IB基因。结果表明,克隆的BMPR-IB基因扩增片段长467 bp,扩增片段位于该基因编码区第497与963位碱基之间,与已报道的野生型山羊、绵羊、猪、人和鼠的BMPR-IB基因该编码区的同源性分别为99%、99%、92%、92%和87%;与野生型山羊相比,云岭黑山羊BMPR-IB基因第498位和575位碱基存在多态性位点,其中第498位碱基由T突变为C,组成的密码仍编码天冬氨酸（Asp,D）,为同义突变;第575位碱基由C突变为T,编码的氨基酸由脯氨酸（Pro,P）变为亮氨酸（Leu,L）,为错义突变;BMPR-IB蛋白的二级结构在错义突变位点可能具有多种构象。本研究结果为深入研究BMPR-IB基因与云岭黑山羊产羔性状间的关系奠定了基础。 相似文献
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经RT-PCR扩增得到一株口蹄疫亚洲1型流行毒株的非结构蛋白P3基因核苷酸序列,与其他代表性参考毒株的P3基因进行比较,分析该毒株P3区基因特征.结果表明,该毒株P3基因含有2 721个核苷酸,编码907个氨基酸;其中非结构蛋白3A的基因长度为459 bp,编码153个氨基酸;3个3B(VPg)基因长度分别是69、72、72 bp,分别编码23、24、24个氨基酸;3C基因长度为639 bp,编码213个氨基酸;3D基因长度为1 410 bp,编码470个氨基酸.氨基酸序列比较分析显示,3A基因C末端比其他基因更容易变异,根据3A基因构建的系统进化分析提示该流行毒株与YNBS/58和IND 321/01亲缘关系较近,属同一亚系谱. 相似文献
10.
生长分化因子9（growth differentiation factor 9,GDF9）基因是卵母细胞分泌的生长因子,调节卵泡的早期生长和分化。对贵州白山羊GDF9基因的研究结果显示,编码区1007位碱基与已知山羊不同。为了研究1007位点对贵州白山羊繁殖力的影响,采用锚定PCR对GDF9基因外显子2第18位氨基酸密码子所在区域进行了扩增、克隆测序和基因型分析,结果表明,GDF9基因编码区1007位点表现出C/T多态性,使成熟肽第18位氨基酸为丙氨酸/缬氨酸替换;低产母羊均为杂合基因型,高产母羊中90%为杂合基因型,高产羊群与低产羊群之间基因型频率差异不显著（P〉0.05）,表明GDF9基因1007位点的多态性与贵州白山羊产羔数之间没有直接的相关性。 相似文献
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An exfoliative toxin (SIET)-producing strain (D-52) of Staphylococcus intermedius derived from canine pyoderma did not possess large plasmids. Therefore, the gene coding for SIET was considered to be located on the chromosomal DNA. The SIET gene was cloned from the chromosomal DNA of S. intermedius and was expressed in Escherichia coli. The nucleotide sequence of the SIET gene consists of a coding region of 990 bp specifying a polypeptide of 330 amino acid residues, which included a putative 42-residue signal sequence. 相似文献
13.
贵州白山羊GDF9基因编码区1007位点的多态性 总被引：1，自引：1，他引：0
生长分化因子9(growth differentiation factor 9,GDF9)基因是卵母细胞分泌的生长因子,调节卵泡的早期生长和分化。对贵州白山羊GDF 9基因的研究结果显示,编码区1007位碱基与已知山羊不同。为了研究1007位点对贵州白山羊繁殖力的影响,采用锚定PCR对GDF 9基因外显子2第18位氨基酸密码子所在区域进行了扩增、克隆测序和基因型分析,结果表明,GDF 9基因编码区1007位点表现出C/T多态性,使成熟肽第18位氨基酸为丙氨酸/缬氨酸替换;低产母羊均为杂合基因型,高产母羊中90%为杂合基因型,高产羊群与低产羊群之间基因型频率差异不显著（P＞0.05）,表明GDF 9基因1007位点的多态性与贵州白山羊产羔数之间没有直接的相关性。 相似文献
14.
作者旨在克隆鸭GHSR基因mRNA部分编码区序列,并筛查克隆序列中的变异位点。采用RT-PCR法从巢湖鸭下丘脑组织中分离家鸭GHSR基因mRNA中编码区核酸序列,并选用30个个体cDNA,通过构建cDNA池对克隆编码区的序列变异测序检测。结果表明,克隆鸭GHSR基因mRNA部分编码区核酸序列长635 bp(GenBank登录号:EU005225),编码211个氨基酸,与鸡GHSR基因同源核酸相似性达到94%,氨基酸相似性为97%;cDNA池测序检测揭示克隆区段存在3个碱基变异位点,均为同义突变,未使编码氨基酸发生改变。克隆鸭GHSR基因mRNA编码区核酸、氨基酸序列与鸡同源序列的相似性,以及克隆核酸序列的变异检测结果表明,鸭GHSR基因在序列和功能上具有很高的保守性。 相似文献
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Lepiarczyk E Bossowska A Kaleczyc J Majewski M 《Polish journal of veterinary sciences》2011,14(2):181-189
Botulinum toxin (BTX) belongs to a family of neurotoxins which strongly influence the function of autonomic neurons supplying the urinary bladder. Accordingly, BTX has been used as an effective drug in experimental therapies of a range of neurogenic bladder disorders. However, there is no detailed information dealing with the influence of BTX on the morphological and chemical properties of nerve fibres supplying the urinary bladder wall. Therefore, the present study investigated, using double-labeling immunohistochemistry, the distribution, relative frequency and chemical coding of cholinergic and noradrenergic nerve fibers supplying the wall of the urinary bladder in normal female pigs (n = 6) and in the pigs (n = 6) after intravesical BTX injections. In the pigs injected with BTX, the number of adrenergic (DbetaH-positive) nerve fibers distributed in the bladder wall (urothelium, submucosa and muscle coat) was distinctly higher while the number of cholinergic (VAChT-positive) nerve terminals was lower than that found in the control animals. Moreover, the injections of BTX resulted in some changes dealing with the chemical coding of the adrenergic nerve fibers. In contrast to the normal pigs, in BTX injected animals the number of DbetaH/NPY- or DbetaH/CGRP-positive axons was higher in the muscle coat, and some fibres distributed in the urothelium and submucosa expressed immunoreactivity to CGRP. The results obtained suggest that the therapeutic effects of BTX on the urinary bladder might be dependent on changes in the distribution and chemical coding of nerve fibers supplying this organ. 相似文献
17.
利用2头人工感染中等毒力猪瘟野毒耐过猪进行配种,诱发了猪瘟野毒垂直传播.带毒母猪于带毒后171 d产下9头仔猪,其中3头为死胎,6头为木乃伊.直接免疫荧光抗体试验和RT-PCR检测,9头均为阳性.测序结果表明,3头测序仔猪中,2头仔猪所分离病毒E2基因主要抗原编码区序列与公猪所接种病毒的一致;另1头仔猪所分离病毒E2基因主要抗原编码区序列与公猪所接种病毒的同源性高于与母猪所接种病毒的同源性.母猪在与公猪配种前后,其所分离病毒E2基因主要抗原编码区序列发生了变化,配种后与公猪所分离病毒的一致,说明猪瘟病毒在猪体内的繁殖存在一定的优势选择现象. 相似文献
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本研究采用生物信息学的方法比较不同物种BPI基因编码区CDS序列,分析人、小家鼠、褐家鼠、牛、白颊长臂猿、原鸡、家兔、野猪、猕猴、家马、非洲爪蟾、毛猩猩、犬 13个物种BPI基因编码区的遗传多样性,且对BPI氨基酸序列组成、信号肽、疏水性/亲水性、跨膜结构、二级结构及保守结构域进行预测分析。结果表明,在13个物种的29条BPI基因CDS序列中,共检测到532个多态位点,生成了15种单倍型,BPI基因在种群间及种群内均存在较大的遗传变异,BPI基因具有较强的密码子偏爱性。BPI蛋白理论等电点均大于7,呈碱性,N端大都有信号肽,肽链表现为亲水性,基本属于跨膜蛋白和分泌蛋白。BPI蛋白主要二级结构元件为α螺旋、β折叠和无规则卷曲,有2个保守结构域BPI1和BPI2。 相似文献
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软体动物牡蛎肌联蛋白一级结构的预测 《畜牧与饲料科学》2016,37(12):5-5
旨在预测牡蛎肌联蛋白的基因exon-intron结构,并确定其一级结构及结构域。利用生物信息学方法,从牡蛎基因组数据中预测肌联蛋白基因的exon-intron结构,并进一步预测编码肌联蛋白的m RNA组成,从而确定该蛋白的一级结构,并检测其结构域;与同源蛋白进行序列比对,制作系统进化树以了解其在系统进化中的位置。结果表明,该蛋白基因在基因组中横跨200 kb的序列区域,预测编码肌联蛋白的mRNA大约由74 kb组成,推测相对分子质量约为2 700 ku;该蛋白由Ig、Fn、kinase结构域,PEVK结构域和unique序列组成;在系统发育方面,该蛋白归属于原口动物集团。牡蛎肌联蛋白是一种新型的肌联蛋白样蛋白。 相似文献
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对牦牛心脏脂肪酸结合蛋白（H-FABP）基因进行了克隆测序，并与GenBank中9个物种相应基因编码区核苷酸序列进行了比对分析，在此基础上采用邻接法、最大简约法和最小进化法构建了牦牛与其它物种间分子系统进化树。结果表明，牦牛H-FABP基因由4个外显子和3个内含子组成，外显子1、外显子2、外显子3和外显子4大小分别为73、173、102和54bp，内含子1、内含子2和内含子3大小分别为3460、1892和1495bp。CDS序列全长为402bp，前体氨基酸数为133个。不同物种间在该基因核苷酸序列上有较高的保守性。牦牛与普通牛、绵羊、山羊、猪、人、大鼠、小鼠、鸡、斑马鱼各物种在H-FABP基因编码区核苷酸序列上同源性大小分别为99．8％、97．8％、97．0％、92．8％、88．8％、83．3％、83．1％、76．4％、68．7％。通过邻接法、最大简约法和最小进化法用H-FABP基因编码区核苷酸序列构建的物种间分子系统进化树，结果表明，3种方法构建的物种间分子系统进化树基本一致。系统树总体分为两支，斑马鱼为独立的一支，而牦牛与其它物种为另一大分支。牦牛与普通牛、绵羊与山羊先分别聚在一起，然后再聚为一类；后与猪、人依次聚为一类。小鼠和大鼠先聚为一类，再与人和其它物种聚类，然后再与鸡聚为一类。该系统聚类结果与动物学分类一致，表明H-FABP基因适合于构建不同物种间的系统进化树。 相似文献