Cationic surfactant changes the morphology of DNA molecules

Hisanori Nakanishi; Koji Tsuchiya; Takahiro Okubo; Hideki Sakai; Masahiko Abe

doi:10.1021/la051443p

Cationic surfactant changes the morphology of DNA molecules

Hisanori Nakanishi, Koji Tsuchiya, Takahiro Okubo, Hideki Sakai, Masahiko Abe

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

The effect of cetyltrimethylammonium bromide (CTAB), a cationic surfactant, was investigated on the aggregated form of DNA molecules in water at a given temperature. CTAB caused changes in the aggregated form of DNA molecules from loosely packed spherical to rodlike through toroidal one with increasing concentration below the critical micelle concentration (CMC). The change was suggested to arise from the ion complex formation between CTAB and DNA molecules due to the electrostatic interaction, thereby reducing the surface charge and solubility in water of the latter.

Original language	English
Pages (from-to)	345-347
Number of pages	3
Journal	Langmuir
Volume	23
Issue number	2
DOIs	https://doi.org/10.1021/la051443p
Publication status	Published - Jan 16 2007
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la051443p

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AU - Okubo, Takahiro

AU - Sakai, Hideki

AU - Abe, Masahiko

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Y1 - 2007/1/16

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AB - The effect of cetyltrimethylammonium bromide (CTAB), a cationic surfactant, was investigated on the aggregated form of DNA molecules in water at a given temperature. CTAB caused changes in the aggregated form of DNA molecules from loosely packed spherical to rodlike through toroidal one with increasing concentration below the critical micelle concentration (CMC). The change was suggested to arise from the ion complex formation between CTAB and DNA molecules due to the electrostatic interaction, thereby reducing the surface charge and solubility in water of the latter.

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Cationic surfactant changes the morphology of DNA molecules

Abstract

ASJC Scopus subject areas

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