The title compound (C28H27NO5S3, Mr= 553. 69) was prepared bythe reaction of a-thiobenzoylthioformmorholine with diethyl acetylene dicarboxylate.The crystal is monoclinic, space group P21/n with a= 9. 160(3), b= 17. 7...The title compound (C28H27NO5S3, Mr= 553. 69) was prepared bythe reaction of a-thiobenzoylthioformmorholine with diethyl acetylene dicarboxylate.The crystal is monoclinic, space group P21/n with a= 9. 160(3), b= 17. 726(3), c=16. 602(3) A ; β= 100. 375(13)°; V=2651. 4(10) A3, Z=4, Dc= 1. 387 g/cm3, μ(MoKa) =0. 319 mm-1, F(000) =1160, R=0. 0428, wR(F2) =0. 0910 for 2438 observed reflections (I>2(I)). X-ray analysis reveals that interatomic distances for C(5)-C(6), C(13)-C(14) and C(21)-C(22) are 1. 331(4), 1. 351(4), 1. 344(4)A respectively, which show that they are normal C=C double bonds. All S-C bondlengths are similar to typical S-C single bonds (1. 75 - 1. 78 A ). The five-membered ring A (C(5) -C(6) -S(2)-C(13) -S(1) ) (Fig. 1) and six-membered ringB (C(14) -C(15) -C(20) -C(21)-C(22)-S(3) ) (Fig. 1) adopt the flat twist conformation. Furthermore, the morpholine ring adopts chair conformtion.展开更多
The NS 3 5′ terminal gene was amplified by reverse transcription polymerase reaction (RT PCR), and half nest polymerase reaction. The amplified fragments were cloned and sequenced. Comparing and analysing the nucleot...The NS 3 5′ terminal gene was amplified by reverse transcription polymerase reaction (RT PCR), and half nest polymerase reaction. The amplified fragments were cloned and sequenced. Comparing and analysing the nucleotide sequences and deduced amino acid sequences of the HCLV isolated from blood and other HCV strains were performed on the computer with Goldkey software. The results showed that the highest degree of nucleotide homology exists between HCLV isolated from blood and “C” strain (sk 6 cellular virus). The homology of amino acid sequence was all at or over 98% between each pair strains. It reveals that HCLV has very close relationship with “C” strain, and also proves that NS 3 gene is highly conservative in pestiviruses.展开更多
The title Mn（Ⅱ） coordination polymer,poly{[heptaaqua-（μ4-bi-phenyl-3,3？,5,5？-tetracarboxylate）-bimanganese（Ⅱ）] pentahydrate},[Mn_2（bpta）（H_2O）_7]_n·5n H_2O（I）,is crystallized from a mixture of bi...The title Mn（Ⅱ） coordination polymer,poly{[heptaaqua-（μ4-bi-phenyl-3,3？,5,5？-tetracarboxylate）-bimanganese（Ⅱ）] pentahydrate},[Mn_2（bpta）（H_2O）_7]_n·5n H_2O（I）,is crystallized from a mixture of biphenyl-3,3？,5,5？-tetracarboxylic acid（H_4bpta） and MnCl_2·4H_2O in waterethanol under room temperature. Its asymmetric unit consists of one and two halves of crystallographically independent Mn（Ⅱ） cations,one fully deprotonated H4 bpta ligand,seven coordinated water molecules and five solvent water as guest molecules. In I,each Mn（Ⅱ） atom is octahedrally coordinated by six oxygen atoms from bpta^（4-） anions and coordinated water molecules. In the Mn（Ⅱ） cations,one half Mn（Ⅱ） ion of them located at a 2-fold axis generating a trinuclear [Mn_3（H_2O）_2（RCOO）_2] linker by μ1,1-O（water） and μ1,3-O,O？（carboxylate） bridges and another half Mn（Ⅱ） ion with an inversion is a mononuclear linker. These neighbouring trinuclear and mononuclear Mn（Ⅱ） cations are linked together by biphenyl-3,3？,5,5？-tetracarboxylates to form a three-dimensional framework with a（42.84） topology of a（4,4）-connected net,in which the positions of the trinuclear [Mn_3（H_2O）_2（R-COO）_2] linker as a 4-connector linking four bpta^（4-） ligands in I reproduce an eagle-shaped arrangement. The polymeric structure exhibits a water channel with an accessible void of 797.1 ？~3,amounting to 15.7% of the total unit-cell volume. Each of the cavities in the network is occupied by solvent water molecules.展开更多
[目的]探讨miR-106b-5p的3'-末端2'-O-甲基化修饰在乳腺癌细胞中的影响。[方法]纳入2019年9月-2021年9月收治的乳腺癌患者,收集其乳腺癌组织和癌旁组织。敲低或过表达miR-106b-5p后,检测乳腺癌细胞的增值水平。乳腺癌和癌旁组...[目的]探讨miR-106b-5p的3'-末端2'-O-甲基化修饰在乳腺癌细胞中的影响。[方法]纳入2019年9月-2021年9月收治的乳腺癌患者,收集其乳腺癌组织和癌旁组织。敲低或过表达miR-106b-5p后,检测乳腺癌细胞的增值水平。乳腺癌和癌旁组织中纯化的miR-106b-5p进行质谱分析以确定分子质量和LC-MS/MS确定核苷修饰。分析甲基转移酶HENMT1对miR-106b-5p的3'-末端2'-O-甲基化作用。[结果]敲低miR-106b-5p后,乳腺癌细胞的增值水平下降(P<0.05)。乳腺组织中miR-106b-5p的3'-末端2'-O-甲基化显著高于癌旁中的水平(P<0.05)。敲低HENMT1后,乳腺癌细胞MCF7中miR-106b-5p的3'-末端2'-O-甲基化水平下降(P<0.05)。敲低HENMT1后,miR-106b-5p的半衰期下降(P<0.05)。[结论]HENMT1能对miR-106b-5p进行3'-末端2'-O-甲基化修饰(65.32±16.40 vs 11.49±3.20)。3'-末端2'-O-甲基化能提升miR-106b-5p的半衰期(0.79±0.05 vs 0.98±0.07)并促进miR-106b-5p的促乳腺癌细胞增殖(1.70±0.08 vs 1.04±0.06)。展开更多
Six new transition metal complexes, [Zn（HBTC）（PYTPY）]n·n PYTPY（1）, [Cu（HBTC）（PYTPY）]n·n PYTPY（2）, [Co（HBTC）（PYTPY）]n·n DMF（3）, [Mn（HBTC）（PYTPY）]n·n DMF（4）, [Cd（HBTC）（PYTP...Six new transition metal complexes, [Zn（HBTC）（PYTPY）]n·n PYTPY（1）, [Cu（HBTC）（PYTPY）]n·n PYTPY（2）, [Co（HBTC）（PYTPY）]n·n DMF（3）, [Mn（HBTC）（PYTPY）]n·n DMF（4）, [Cd（HBTC）（PYTPY）（H2O）]n·2nH2O（5）, and [Co（HBTC）（PYTPY）（H2O）2]（6）,（H3BTC = 1,3,5-benzenetricarboxylic acid, PYTPY = 4＇-（4-pyridyl）-2,2＇：6＇,2＇＇-terpyridine, DMF = N,N？-dimethylformamide）, have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complexes 1~5 all feature one-dimensional chain structures, and complex 6 exhibits a zero-dimensional structure. Complexes 1~5 present three-dimensional（3D） supramolecular frameworks via π-π stacking interactions, whenas 6 has also a 3D supramolecular structure assembled by hydrogen bonding. Meanwhile, complexes 1 ~ 6 exhibit the thermal stabilities and photoluminescent properties.展开更多
以高分子表面活性剂HM-EO为主成相剂,金属螯合表面活性剂Triton X-114-IDA-Cu(Ⅱ)(TX-Cu(Ⅱ))为辅成相剂,构建新型亲和双水相胶束系统(ATPMS)以提高目标产物的萃取选择性,并考察重组蛋白3',5'-二磷酸核苷酸酶(YND)在系统中分配...以高分子表面活性剂HM-EO为主成相剂,金属螯合表面活性剂Triton X-114-IDA-Cu(Ⅱ)(TX-Cu(Ⅱ))为辅成相剂,构建新型亲和双水相胶束系统(ATPMS)以提高目标产物的萃取选择性,并考察重组蛋白3',5'-二磷酸核苷酸酶(YND)在系统中分配行为。结果表明,系统中不含亲和配基时YND主要分配于胶束缺失相;随着亲和配基含量的增加,YND与TX-Cu(Ⅱ)亲和结合而逐渐分配到胶束富集相并且在系统中显示出优异的稳定性;调节溶液p H能够影响YND亲和分配,最适萃取条件为pH 9.0;增大无机盐浓度,导致更多杂蛋白分配到胶束缺失相,然而对YND分配影响较小。在2.5%HM-EO、0.125%TX-Cu(Ⅱ)、p H 9.0、50 mmol/L Na Cl条件下,实验获得65.8%的酶活回收率。因此亲和ATPMS可以有效用于对富组氨酸蛋白YND的分离纯化,为该体系在重组蛋白的分离纯化试验提供相应的基础依据。展开更多
文摘The title compound (C28H27NO5S3, Mr= 553. 69) was prepared bythe reaction of a-thiobenzoylthioformmorholine with diethyl acetylene dicarboxylate.The crystal is monoclinic, space group P21/n with a= 9. 160(3), b= 17. 726(3), c=16. 602(3) A ; β= 100. 375(13)°; V=2651. 4(10) A3, Z=4, Dc= 1. 387 g/cm3, μ(MoKa) =0. 319 mm-1, F(000) =1160, R=0. 0428, wR(F2) =0. 0910 for 2438 observed reflections (I>2(I)). X-ray analysis reveals that interatomic distances for C(5)-C(6), C(13)-C(14) and C(21)-C(22) are 1. 331(4), 1. 351(4), 1. 344(4)A respectively, which show that they are normal C=C double bonds. All S-C bondlengths are similar to typical S-C single bonds (1. 75 - 1. 78 A ). The five-membered ring A (C(5) -C(6) -S(2)-C(13) -S(1) ) (Fig. 1) and six-membered ringB (C(14) -C(15) -C(20) -C(21)-C(22)-S(3) ) (Fig. 1) adopt the flat twist conformation. Furthermore, the morpholine ring adopts chair conformtion.
文摘The NS 3 5′ terminal gene was amplified by reverse transcription polymerase reaction (RT PCR), and half nest polymerase reaction. The amplified fragments were cloned and sequenced. Comparing and analysing the nucleotide sequences and deduced amino acid sequences of the HCLV isolated from blood and other HCV strains were performed on the computer with Goldkey software. The results showed that the highest degree of nucleotide homology exists between HCLV isolated from blood and “C” strain (sk 6 cellular virus). The homology of amino acid sequence was all at or over 98% between each pair strains. It reveals that HCLV has very close relationship with “C” strain, and also proves that NS 3 gene is highly conservative in pestiviruses.
基金supported by the National Natural Science Foundation of China(No.21571118)
文摘The title Mn（Ⅱ） coordination polymer,poly{[heptaaqua-（μ4-bi-phenyl-3,3？,5,5？-tetracarboxylate）-bimanganese（Ⅱ）] pentahydrate},[Mn_2（bpta）（H_2O）_7]_n·5n H_2O（I）,is crystallized from a mixture of biphenyl-3,3？,5,5？-tetracarboxylic acid（H_4bpta） and MnCl_2·4H_2O in waterethanol under room temperature. Its asymmetric unit consists of one and two halves of crystallographically independent Mn（Ⅱ） cations,one fully deprotonated H4 bpta ligand,seven coordinated water molecules and five solvent water as guest molecules. In I,each Mn（Ⅱ） atom is octahedrally coordinated by six oxygen atoms from bpta^（4-） anions and coordinated water molecules. In the Mn（Ⅱ） cations,one half Mn（Ⅱ） ion of them located at a 2-fold axis generating a trinuclear [Mn_3（H_2O）_2（RCOO）_2] linker by μ1,1-O（water） and μ1,3-O,O？（carboxylate） bridges and another half Mn（Ⅱ） ion with an inversion is a mononuclear linker. These neighbouring trinuclear and mononuclear Mn（Ⅱ） cations are linked together by biphenyl-3,3？,5,5？-tetracarboxylates to form a three-dimensional framework with a（42.84） topology of a（4,4）-connected net,in which the positions of the trinuclear [Mn_3（H_2O）_2（R-COO）_2] linker as a 4-connector linking four bpta^（4-） ligands in I reproduce an eagle-shaped arrangement. The polymeric structure exhibits a water channel with an accessible void of 797.1 ？~3,amounting to 15.7% of the total unit-cell volume. Each of the cavities in the network is occupied by solvent water molecules.
文摘[目的]探讨miR-106b-5p的3'-末端2'-O-甲基化修饰在乳腺癌细胞中的影响。[方法]纳入2019年9月-2021年9月收治的乳腺癌患者,收集其乳腺癌组织和癌旁组织。敲低或过表达miR-106b-5p后,检测乳腺癌细胞的增值水平。乳腺癌和癌旁组织中纯化的miR-106b-5p进行质谱分析以确定分子质量和LC-MS/MS确定核苷修饰。分析甲基转移酶HENMT1对miR-106b-5p的3'-末端2'-O-甲基化作用。[结果]敲低miR-106b-5p后,乳腺癌细胞的增值水平下降(P<0.05)。乳腺组织中miR-106b-5p的3'-末端2'-O-甲基化显著高于癌旁中的水平(P<0.05)。敲低HENMT1后,乳腺癌细胞MCF7中miR-106b-5p的3'-末端2'-O-甲基化水平下降(P<0.05)。敲低HENMT1后,miR-106b-5p的半衰期下降(P<0.05)。[结论]HENMT1能对miR-106b-5p进行3'-末端2'-O-甲基化修饰(65.32±16.40 vs 11.49±3.20)。3'-末端2'-O-甲基化能提升miR-106b-5p的半衰期(0.79±0.05 vs 0.98±0.07)并促进miR-106b-5p的促乳腺癌细胞增殖(1.70±0.08 vs 1.04±0.06)。
基金Supported by the National Natural Science Foundation of China(No.21576112)Natural Science Foundation of Jilin Province(20150623024TC-19,20170520147JH)the Science and Technology Development Plan of Siping City(2015049)
文摘Six new transition metal complexes, [Zn（HBTC）（PYTPY）]n·n PYTPY（1）, [Cu（HBTC）（PYTPY）]n·n PYTPY（2）, [Co（HBTC）（PYTPY）]n·n DMF（3）, [Mn（HBTC）（PYTPY）]n·n DMF（4）, [Cd（HBTC）（PYTPY）（H2O）]n·2nH2O（5）, and [Co（HBTC）（PYTPY）（H2O）2]（6）,（H3BTC = 1,3,5-benzenetricarboxylic acid, PYTPY = 4＇-（4-pyridyl）-2,2＇：6＇,2＇＇-terpyridine, DMF = N,N？-dimethylformamide）, have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complexes 1~5 all feature one-dimensional chain structures, and complex 6 exhibits a zero-dimensional structure. Complexes 1~5 present three-dimensional（3D） supramolecular frameworks via π-π stacking interactions, whenas 6 has also a 3D supramolecular structure assembled by hydrogen bonding. Meanwhile, complexes 1 ~ 6 exhibit the thermal stabilities and photoluminescent properties.
文摘以高分子表面活性剂HM-EO为主成相剂,金属螯合表面活性剂Triton X-114-IDA-Cu(Ⅱ)(TX-Cu(Ⅱ))为辅成相剂,构建新型亲和双水相胶束系统(ATPMS)以提高目标产物的萃取选择性,并考察重组蛋白3',5'-二磷酸核苷酸酶(YND)在系统中分配行为。结果表明,系统中不含亲和配基时YND主要分配于胶束缺失相;随着亲和配基含量的增加,YND与TX-Cu(Ⅱ)亲和结合而逐渐分配到胶束富集相并且在系统中显示出优异的稳定性;调节溶液p H能够影响YND亲和分配,最适萃取条件为pH 9.0;增大无机盐浓度,导致更多杂蛋白分配到胶束缺失相,然而对YND分配影响较小。在2.5%HM-EO、0.125%TX-Cu(Ⅱ)、p H 9.0、50 mmol/L Na Cl条件下,实验获得65.8%的酶活回收率。因此亲和ATPMS可以有效用于对富组氨酸蛋白YND的分离纯化,为该体系在重组蛋白的分离纯化试验提供相应的基础依据。
