DNA Triplexes That Bind Several Cofactor Molecules.
DNA Triplexes That Bind Several Cofactor Molecules.
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结合多个辅因子分子的 DNA 三链体
DOI:
10.1002/chem.201503220
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
C. Richert
中科院分区:
文献类型:
--
作者:
S. Vollmer;C. Richert
Cofactors are critical for energy‐consuming processes in the cell. Harnessing such processes for practical applications requires control over the concentration of cofactors. We have recently shown that DNA triplex motifs with a designed binding site can be used to capture and release nucleotides with low micromolar dissociation constants. In order to increase the storage capacity of such triplex motifs, we have explored the limits of ligand binding through designed cavities in the oligopurine tract. Oligonucleotides with up to six non‐nucleotide bridges between purines were synthesized and their ability to bind ATP, cAMP or FAD was measured. Triplex motifs with several single‐nucleotide binding sites were found to bind purines more tightly than triplexes with one large binding site. The optimized triplex consists of 59 residues and four C3‐bridges. It can bind up to four equivalents of ligand with apparentKdvalues of 52 µM for ATP, 9 µM for FAD, and 2 µM for cAMP. An immobilized version fuels bioluminescence via release of ATP at body temperature. These results show that motifs for high‐density capture, storage and release of energy‐rich biomolecules can be constructed from synthetic DNA.
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影响因子:
64.8
作者:
R. Vallee;P. Höök
通讯作者:
P. Höök
影响因子:
3.2
作者:
S. Vollmer;C. Richert
通讯作者:
C. Richert
影响因子:
15
作者:
Lewis, FD;Liu, XY;Egli, M
通讯作者:
Egli, M
DOI:
10.1021/jo2003067
发表时间:
2011
期刊:
The Journal of organic chemistry
影响因子:
--
作者:
Christoph Kröner;M. Röthlingshöfer;C. Richert
通讯作者:
C. Richert
DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
R. Sieber
通讯作者:
R. Sieber