共 40 条
Nanoparticles featuring amino acid-functionalized side chains as DNA receptors
被引:30
|作者:
Ghosh, Partha S.
[1
]
Han, Gang
[1
]
Erdogan, Belma
[1
]
Rosado, Olga
[1
]
Krovi, Sai Archana
[1
]
Rotello, Vincent M.
[1
]
机构:
[1] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA
关键词:
amino acid;
DNA;
nanoparticle;
D O I:
10.1111/j.1747-0285.2007.00534.x
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
A family of nanoparticles has been fabricated featuring cationic amino acid-based side chains. This controlled surface modification provides a tool to investigate the effect of various non-covalent interactions at the nanoparticle-DNA interface. The binding affinities of these nanoparticles towards DNA were determined using fluorescence, exhibiting more than threefold modulation in binding a 37-mer DNA strand. The secondary structure of the DNA strand was distorted upon nanoparticle binding, with the extent of distortion dependent on the structure of amino acid side chain.
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页码:13 / 18
页数:6
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