目的对2021年采集于我国福建的A组轮状病毒(group A rotavirus,RVA)G3P[8]毒株FJ21351116进行全基因组分子特征分析。方法使用高灵敏度A组轮状病毒全基因组测序方法对FJ21351116进行全基因组测序。用MEGA11.0、Geneious9.0.2和DNASTAR...目的对2021年采集于我国福建的A组轮状病毒(group A rotavirus,RVA)G3P[8]毒株FJ21351116进行全基因组分子特征分析。方法使用高灵敏度A组轮状病毒全基因组测序方法对FJ21351116进行全基因组测序。用MEGA11.0、Geneious9.0.2和DNASTAR软件通过核酸序列分析评估病毒的基因组特征。使用BioEdit v.7.0.9.0和PyMOL v.2.5.2分析VP7和VP4(VP8*)的中和表位。结果我国福建RVA毒株FJ21351116基因型为G3-P[8]-I2-R2-C2-M2-A2-N2-T2-E2-H2,系统进化分析显示,FJ21351116株的VP7、VP4、VP3、NSP2-NSP5基因与近几年日本检测到的马样DS-1样G3P[8]基因存在亲缘关系。而VP6、VP1、VP2、NSP1基因与大部分国家G2P[4]的相应基因亲缘关系近,特别是新加坡,表明该毒株是马样G3P[8]毒株与G2P[4]毒株共感染过程中通过基因重配形成的。FJ21351116的VP7/VP4基因与Rotarix和RotaTeq疫苗的进化分析表明,VP7和VP4(VP8*)中和抗原表位与疫苗氨基酸位点均存在多个突变。推测Rotarix和RotaTeq疫苗针对马样DS-1样G3P[8]RVA的保护效果不佳,且与Rotarix的中和抗原表位氨基酸差异高于RotaTeq。结论本研究发现一例中国罕见的DS-1样G3P[8]型RVA毒株,且疫苗株可能对其保护效果差,强调了持续监测RVA毒株及研发高效覆盖面全的RVA疫苗的重要性。展开更多
G3P[3]型别多见于猫/狗A组轮状病毒(Group A rotavirus,RVA)。本研究前期工作中从广西农村一名腹泻儿童粪便标本中检测到1例在人的感染中少见的G3P[3]型RVA(命名M2-102),但经初步基因分析提示其VP7和VP4基因均同猫/狗G3P[3]RVAs进化距...G3P[3]型别多见于猫/狗A组轮状病毒(Group A rotavirus,RVA)。本研究前期工作中从广西农村一名腹泻儿童粪便标本中检测到1例在人的感染中少见的G3P[3]型RVA(命名M2-102),但经初步基因分析提示其VP7和VP4基因均同猫/狗G3P[3]RVAs进化距离远。为了解M2-102的种属来源,本研究对其全基因组11条基因进行了RT-PCR扩增、测序和序列分析。使用RotaC分型工具对所获得的M2-102全基因组基因序列进行分型。结果显示RVA/Human-wt/CHN/M2-102/2014/G3P[3]具有G3-P[3]-I3-R3-C3-M3-A9-N3-T3-E3-H6基因组型。序列分析进一步显示M2-102基因组中有5条基因(VP7、VP1、VP2、NSP2和NSP3)同云南蝙蝠MYAS33株亲缘关系近,处于相同的进化树支;另有5条基因(VP4、VP3、NSP1、NSP4和NSP5)同猿猴RRV株进化距离近,位于相同的进化树支;仅有1条基因VP6同人AU-1样RVAs处在相同进化树支,并具有较高核苷酸同源性。推测M2-102是一例由人AU-1样病毒同蝙蝠株MYAS33及猿猴株RRV类似病毒经基因重配而产生的多种属来源的重配毒株。展开更多
The molecule with Th symmetry is rare.A dodecahedrane-like molecule C12H12B8 with uncommon Th symmetry has been reported here.Density functional calculations and minimization techniques have been employed to character...The molecule with Th symmetry is rare.A dodecahedrane-like molecule C12H12B8 with uncommon Th symmetry has been reported here.Density functional calculations and minimization techniques have been employed to characterize its structural and electronic properties.Its geometry,electronic properties,vibrational frequencies and heat of formation have been calculated at the B3LYP/6-311＋G（d,p） level of theory.The absence of imaginary vibrational frequency confirms that it corresponds to true minimum on the potential energy hypersurface.Its vibrational bands in the IR intensity have been discussed and compared with future experimental identification.At the B3LYP/6-311＋G（d,p） level,the heat of formation has been calculated to be 720.9 kJ mol^-1 using the isodesmic reaction.According to this value,it is a potential high energy density molecule.展开更多
There is growing interest in expanding the production of soybean oils(mainly triacylglycerol, or TAG) to meet rising feed demand and address global energy concerns. We report that a plastidlocalized glycerol-3-phospha...There is growing interest in expanding the production of soybean oils(mainly triacylglycerol, or TAG) to meet rising feed demand and address global energy concerns. We report that a plastidlocalized glycerol-3-phosphate dehydrogenase(GPDH), encoded by GmGPDHp1 gene, catalyzes the formation of glycerol-3-phosphate(G3 P), an obligate substrate required for TAG biosynthesis.Overexpression of GmGPDHp1 increases soybean seed oil content with high levels of unsaturated fatty acids(FAs), especially oleic acid(C18:1), without detectably affecting growth or seed protein content or seed weight. Based on the lipidomic analyses, we found that the increase in G3 P content led to an elevated diacylglycerol(DAG) pool, in which the Kennedy pathwayderived DAG was mostly increased, followed by PC-derived DAG, thereby promoting the synthesis of TAG containing relatively high proportion of C18:1. The increased G3 P levels induced several transcriptional alterations of genes involved in the glycerolipid pathways. In particular, genes encoding the enzymes responsible for de novo glycerolipid synthesis were largely upregulated in the transgenic lines, in-line with the identified biochemical phenotype. These results reveal a key role for GmGPDHp1-mediated G3 P metabolism in enhancing TAG synthesis and demonstrate a strategy to modify the FA compositions of soybean oils for improved nutrition and biofuel.展开更多
文摘目的对2021年采集于我国福建的A组轮状病毒(group A rotavirus,RVA)G3P[8]毒株FJ21351116进行全基因组分子特征分析。方法使用高灵敏度A组轮状病毒全基因组测序方法对FJ21351116进行全基因组测序。用MEGA11.0、Geneious9.0.2和DNASTAR软件通过核酸序列分析评估病毒的基因组特征。使用BioEdit v.7.0.9.0和PyMOL v.2.5.2分析VP7和VP4(VP8*)的中和表位。结果我国福建RVA毒株FJ21351116基因型为G3-P[8]-I2-R2-C2-M2-A2-N2-T2-E2-H2,系统进化分析显示,FJ21351116株的VP7、VP4、VP3、NSP2-NSP5基因与近几年日本检测到的马样DS-1样G3P[8]基因存在亲缘关系。而VP6、VP1、VP2、NSP1基因与大部分国家G2P[4]的相应基因亲缘关系近,特别是新加坡,表明该毒株是马样G3P[8]毒株与G2P[4]毒株共感染过程中通过基因重配形成的。FJ21351116的VP7/VP4基因与Rotarix和RotaTeq疫苗的进化分析表明,VP7和VP4(VP8*)中和抗原表位与疫苗氨基酸位点均存在多个突变。推测Rotarix和RotaTeq疫苗针对马样DS-1样G3P[8]RVA的保护效果不佳,且与Rotarix的中和抗原表位氨基酸差异高于RotaTeq。结论本研究发现一例中国罕见的DS-1样G3P[8]型RVA毒株,且疫苗株可能对其保护效果差,强调了持续监测RVA毒株及研发高效覆盖面全的RVA疫苗的重要性。
文摘G3P[3]型别多见于猫/狗A组轮状病毒(Group A rotavirus,RVA)。本研究前期工作中从广西农村一名腹泻儿童粪便标本中检测到1例在人的感染中少见的G3P[3]型RVA(命名M2-102),但经初步基因分析提示其VP7和VP4基因均同猫/狗G3P[3]RVAs进化距离远。为了解M2-102的种属来源,本研究对其全基因组11条基因进行了RT-PCR扩增、测序和序列分析。使用RotaC分型工具对所获得的M2-102全基因组基因序列进行分型。结果显示RVA/Human-wt/CHN/M2-102/2014/G3P[3]具有G3-P[3]-I3-R3-C3-M3-A9-N3-T3-E3-H6基因组型。序列分析进一步显示M2-102基因组中有5条基因(VP7、VP1、VP2、NSP2和NSP3)同云南蝙蝠MYAS33株亲缘关系近,处于相同的进化树支;另有5条基因(VP4、VP3、NSP1、NSP4和NSP5)同猿猴RRV株进化距离近,位于相同的进化树支;仅有1条基因VP6同人AU-1样RVAs处在相同进化树支,并具有较高核苷酸同源性。推测M2-102是一例由人AU-1样病毒同蝙蝠株MYAS33及猿猴株RRV类似病毒经基因重配而产生的多种属来源的重配毒株。
基金supported by the Natural Science Foundation of Shandong Province (No. ZR2011BM022)
文摘The molecule with Th symmetry is rare.A dodecahedrane-like molecule C12H12B8 with uncommon Th symmetry has been reported here.Density functional calculations and minimization techniques have been employed to characterize its structural and electronic properties.Its geometry,electronic properties,vibrational frequencies and heat of formation have been calculated at the B3LYP/6-311＋G（d,p） level of theory.The absence of imaginary vibrational frequency confirms that it corresponds to true minimum on the potential energy hypersurface.Its vibrational bands in the IR intensity have been discussed and compared with future experimental identification.At the B3LYP/6-311＋G（d,p） level,the heat of formation has been calculated to be 720.9 kJ mol^-1 using the isodesmic reaction.According to this value,it is a potential high energy density molecule.
基金financially supported by National Key R&D Program of China(2016YFD0100201,2016YFD0100500,2016YFD0100300)National Natural Science Foundation of China(U20A2027,31971899,31971968,32070274)+7 种基金Hundred-thousand and million project of“Heilongjiang province for engineering and technology science”soybean breeding technology innovation and new cultivar breeding(2019ZX16B01)Natural Science Foundation of Heilongjiang(ZD2020C007)China Postdoctoral Science Foundation(2019M661243)Postdoctoral Project of Northeast Agricultural University(NEAUBH-19002)International Postdoctoral Exchange Fellowship Program of China Postdoctoral Council(20180004)Heilongjiang Funds for Distinguished Young Scientists(JC2016004,JC2017006)Dongnongxue zhe Project(to Chen Qingshan)Backbone of Young Talent Scholar Project(to Qi Zhaoming,18XG01)of Northeast Agricultural University。
文摘There is growing interest in expanding the production of soybean oils(mainly triacylglycerol, or TAG) to meet rising feed demand and address global energy concerns. We report that a plastidlocalized glycerol-3-phosphate dehydrogenase(GPDH), encoded by GmGPDHp1 gene, catalyzes the formation of glycerol-3-phosphate(G3 P), an obligate substrate required for TAG biosynthesis.Overexpression of GmGPDHp1 increases soybean seed oil content with high levels of unsaturated fatty acids(FAs), especially oleic acid(C18:1), without detectably affecting growth or seed protein content or seed weight. Based on the lipidomic analyses, we found that the increase in G3 P content led to an elevated diacylglycerol(DAG) pool, in which the Kennedy pathwayderived DAG was mostly increased, followed by PC-derived DAG, thereby promoting the synthesis of TAG containing relatively high proportion of C18:1. The increased G3 P levels induced several transcriptional alterations of genes involved in the glycerolipid pathways. In particular, genes encoding the enzymes responsible for de novo glycerolipid synthesis were largely upregulated in the transgenic lines, in-line with the identified biochemical phenotype. These results reveal a key role for GmGPDHp1-mediated G3 P metabolism in enhancing TAG synthesis and demonstrate a strategy to modify the FA compositions of soybean oils for improved nutrition and biofuel.
