Detailed Information on Publication Record
2016
Study of DNA immobilization on mica surface by atomic force microscopy
HORŇÁKOVÁ, Veronika, Jan PŘIBYL and Petr SKLÁDALBasic information
Original name
Study of DNA immobilization on mica surface by atomic force microscopy
Authors
HORŇÁKOVÁ, Veronika (203 Czech Republic, belonging to the institution), Jan PŘIBYL (203 Czech Republic, belonging to the institution) and Petr SKLÁDAL (203 Czech Republic, guarantor, belonging to the institution)
Edition
Monatshefte fur Chemie, Wien, Springer Wien, 2016, 0026-9247
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Austria
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 1.282
RIV identification code
RIV/00216224:14740/16:00090063
Organization unit
Central European Institute of Technology
UT WoS
000374172200004
Keywords in English
Atomic force microscopy; DNA; Nanostructures; Silanization; Cations; Ethanolamine
Tags
Tags
International impact, Reviewed
Změněno: 22/2/2017 12:54, Mgr. Eva Špillingová
Abstract
V originále
Since its discovery, atomic force microscopy (AFM) is widely used to study biological objects and materials, including cells, proteins, and nucleic acids. AFM measurements are carried out in the air as well as in liquid with a very high resolution, even more complex bioprocesses can be monitored in situ under physiological conditions. Successful imaging of DNA molecules on the flat supporting surface typically requires appropriate treatment of mica. The original surface charge of mica is the same as of DNA, i.e. negative. Accordingly, immobilization using bivalent cations (Mg2+, Ni2+, and Co2+), deposition of ethanolamine, and mica surface silanization with alkoxysiloxane derivatives were reported to achieve an optimal concentration and surface arrangement of DNA molecules. Vapours of alkoxysiloxane derivatives led to uniform negatively charged mica surface and it was found that higher ionic radius causes a weaker bond. A better quality and sharper images of DNA molecules were achieved by adjusting the correct real amplitude of the cantilever. This amplitude should correspond with the expected size of the target objects-DNA molecules in the x-y plane of the image. The length of the observed DNA molecules was 1000 bp and the planar width of DNA was 7.8 nm (in reality 3 nm). The AFM spectroscopic mode was particularly useful.
Links
ED1.1.00/02.0068, research and development project |
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