Two mutants of the zinc finger protein, ZNF191(243—368) I323W and R327W, are suc-cessfully obtained by site-directed mutagenesis. The fluorescence spectrum is used to study the interaction between these two mutants a...Two mutants of the zinc finger protein, ZNF191(243—368) I323W and R327W, are suc-cessfully obtained by site-directed mutagenesis. The fluorescence spectrum is used to study the interaction between these two mutants and the oligonucleotides. The influence of the mutation on the interaction has been studied using ethidium bromide (EB) as the fluorescence probe. The binding constants of the I323W-DNA and R327W-DNA have been calculated and the possible binding models have been discussed.展开更多
The title complex,[Zn（ip）2（H2O）2][ZnCl4]·H2O·2DMF 1（ip=imidazo[4,5-f][1,10] phenanthroline）,has been synthesized via the slow evaporation of concentrated reaction solution at room temperature.It was ch...The title complex,[Zn（ip）2（H2O）2][ZnCl4]·H2O·2DMF 1（ip=imidazo[4,5-f][1,10] phenanthroline）,has been synthesized via the slow evaporation of concentrated reaction solution at room temperature.It was characterized by single-crystal X-ray diffraction.Crystal data for C32H36Cl4N10O5Zn2：white prism,0.17mm×0.15mm×0.10mm,monoclinic,space group P2/c,a=11.928（8）,b=9.868（6）,c=16.520（11）,β=104.879（12）°,V=1879（2）3,Z=2,Mr=913.25,Dc=1.614 g/cm3,F（000）=932,μ=1.616 mm-1,λ（MoKα）=0.71073,GOOF=1.045,R=0.0710 and wR=0.1755 for 3055 observed reflections with I 〉 2σ（I）. X-ray diffraction study reveals that the title complex has an interesting 3D architecture via hydrogen bonding interactions and π-π interactions. The IR, TGA, XRD and luminescent properties of complex 1 were also studied.展开更多
A novel coordination complex [Zn（bipy）2（H2O）4]·L·3H2O （1, bipy = 4,4＇-bipyridine, LHNa = aniline-2,5-disulfonic acid monosodium salt） has been synthesized from LHNa by using hydrothermal method and st...A novel coordination complex [Zn（bipy）2（H2O）4]·L·3H2O （1, bipy = 4,4＇-bipyridine, LHNa = aniline-2,5-disulfonic acid monosodium salt） has been synthesized from LHNa by using hydrothermal method and structurally characterized. The result indicates that complex 1 belongs to the monoclinic system, space group P21/c with a = 20.392（3）, b = 7.4052（12）, c = 23.843（3） , β = 116.253（10）°, V = 3.2291（8） 3, Z = 4, Dc = 1.553 g·cm-3, μ = 0.962 mm-1, F（000） = 1568, and the final R = 0.0497 and wR = 0.1290. The complex 1 has a 0-D discrete structure, and generates an infinite 3-D network with the aid of O–H…O hydrogen bonds and π-π interactions.展开更多
基金This work was supported by the National Natural Science Foundation of China (Grant Nos. 30170228 and 39990600).
文摘Two mutants of the zinc finger protein, ZNF191(243—368) I323W and R327W, are suc-cessfully obtained by site-directed mutagenesis. The fluorescence spectrum is used to study the interaction between these two mutants and the oligonucleotides. The influence of the mutation on the interaction has been studied using ethidium bromide (EB) as the fluorescence probe. The binding constants of the I323W-DNA and R327W-DNA have been calculated and the possible binding models have been discussed.
基金supported by 973 (2006CB932900)NNSFC (20571074)NSF of Fujian Province (2007J172)
文摘The title complex,[Zn（ip）2（H2O）2][ZnCl4]·H2O·2DMF 1（ip=imidazo[4,5-f][1,10] phenanthroline）,has been synthesized via the slow evaporation of concentrated reaction solution at room temperature.It was characterized by single-crystal X-ray diffraction.Crystal data for C32H36Cl4N10O5Zn2：white prism,0.17mm×0.15mm×0.10mm,monoclinic,space group P2/c,a=11.928（8）,b=9.868（6）,c=16.520（11）,β=104.879（12）°,V=1879（2）3,Z=2,Mr=913.25,Dc=1.614 g/cm3,F（000）=932,μ=1.616 mm-1,λ（MoKα）=0.71073,GOOF=1.045,R=0.0710 and wR=0.1755 for 3055 observed reflections with I 〉 2σ（I）. X-ray diffraction study reveals that the title complex has an interesting 3D architecture via hydrogen bonding interactions and π-π interactions. The IR, TGA, XRD and luminescent properties of complex 1 were also studied.
基金Supported by the National Natural Science Foundation of China (Nos. 20771006 and 20901004)
文摘A novel coordination complex [Zn（bipy）2（H2O）4]·L·3H2O （1, bipy = 4,4＇-bipyridine, LHNa = aniline-2,5-disulfonic acid monosodium salt） has been synthesized from LHNa by using hydrothermal method and structurally characterized. The result indicates that complex 1 belongs to the monoclinic system, space group P21/c with a = 20.392（3）, b = 7.4052（12）, c = 23.843（3） , β = 116.253（10）°, V = 3.2291（8） 3, Z = 4, Dc = 1.553 g·cm-3, μ = 0.962 mm-1, F（000） = 1568, and the final R = 0.0497 and wR = 0.1290. The complex 1 has a 0-D discrete structure, and generates an infinite 3-D network with the aid of O–H…O hydrogen bonds and π-π interactions.
