自然界中的肽,蛋白质,磷酸酯或羧酸酯的催化水解是由酶催化的,该酶是高效,快速和选择性的。迄今为止出版的大多数水解化学催化剂都模仿酶的活性位点,并含有金属络合物和氨基酸残基。它们的合成可能很费力,而与酶相比,水解活性仍然有限。我们提出了一种利用囊泡和胶束的流体膜作为两亲性添加剂的载体的方法,该两性添加剂可协同裂解芳基酯键。膜锚定的双-Zn (II)复合物1具有水解活性,并以0.9 M -1 s的二级速率常数(k 2)水解荧光素二乙酸酯(FDA)。-1。水解活性由带有共同氨基酸侧链官能团的共包埋膜添加剂调节。通过这种方法,与循环1( k 2 = 14.7 M -1 s -1)相比,系统的水解活性提高了16倍。DOPC和DSPC脂质分别在室温下形成流体或凝胶相膜。省略脂质,获得胶束溶液,其水解活性达到k 2 = 13.4 M -1 s -1。结果表明,在流体膜和胶束中有利于协同水解,使活性部分可
System for delivering therapeutic agents into living cells and cells nuclei
申请人:Segev David
公开号:US20060160763A1
公开(公告)日:2006-07-20
A novel class of oligomeric compounds designed for forming conjugates with biologically active substances and delivering these substances to a desired bodily target are disclosed. Novel conjugates of these oligomeric compounds and biologically active moieties, pharmaceutical compositions containing such conjugates, and uses thereof as delivery systems for delivering the biologically active substances to a desired target are further disclosed. Processes of preparing the conjugates and the oligomeric compounds and novel intermediates designed for and used in these processes are also disclosed.
POLYMERASE-INDEPENDENT ANALYSIS OF THE SEQUENCE OF POLYNUCLEOTIDES
申请人:Rojas Stütz Jan André
公开号:US20100029008A1
公开(公告)日:2010-02-04
The present invention concerns methods of polymerase independent template directed elongation of polynucleotides, nucleotide building blocks used in these methods as well as the use of the methods and building blocks for the determination of nucleotide sequences, in particular for the determination of SNPs, base modifications, mutations, rearrangements and methylation patterns.
US7771929B2
申请人:——
公开号:US7771929B2
公开(公告)日:2010-08-10
US8680062B2
申请人:——
公开号:US8680062B2
公开(公告)日:2014-03-25
Cooperative hydrolysis of aryl esters on functionalized membrane surfaces and in micellar solutions
作者:M. Poznik、B. König
DOI:10.1039/c4ob00247d
日期:——
Catalytic hydrolysis of peptides, proteins, phosphates or carboxylate esters in nature is catalysed by enzymes, which are efficient, fast and selective. Most of the hydrolytic chemical catalysts published so far mimic the active site of enzymes and contain metal complexes and amino acid residues. Their synthesis can be laborious, while the hydrolytic activity is still limited compared to enzymes. We
自然界中的肽,蛋白质,磷酸酯或羧酸酯的催化水解是由酶催化的,该酶是高效,快速和选择性的。迄今为止出版的大多数水解化学催化剂都模仿酶的活性位点,并含有金属络合物和氨基酸残基。它们的合成可能很费力,而与酶相比,水解活性仍然有限。我们提出了一种利用囊泡和胶束的流体膜作为两亲性添加剂的载体的方法,该两性添加剂可协同裂解芳基酯键。膜锚定的双-Zn (II)复合物1具有水解活性,并以0.9 M -1 s的二级速率常数(k 2)水解荧光素二乙酸酯(FDA)。-1。水解活性由带有共同氨基酸侧链官能团的共包埋膜添加剂调节。通过这种方法,与循环1( k 2 = 14.7 M -1 s -1)相比,系统的水解活性提高了16倍。DOPC和DSPC脂质分别在室温下形成流体或凝胶相膜。省略脂质,获得胶束溶液,其水解活性达到k 2 = 13.4 M -1 s -1。结果表明,在流体膜和胶束中有利于协同水解,使活性部分可