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논문 기본정보
A comparative study on the interaction of phenazinium dyes with low pH induced protonated structure and B-form structure of naturally occurring deoxyribonucleic acid
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Journal of luminescence |
| ISSN | 0022-2313,1872-7883 |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Pradhan, A.B.,Das, S.,Haque, L.,Bhuiya, S.,Das, S. |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | The interaction of two phenazinium dyes namely Phenosafranine (PSF) and Safranin T (ST) with right-handed B-form and left-handed protonated form of Calf Thymus (CT) DNA was investigated using different spectroscopic techniques. Both the dyes have been shown to bind strongly to the right-handed B-form of DNA by the mechanism intercalation as revealed from fluorescence quenching, circular dichroism (CD) and viscosity measurement. From circular dichroic studies it was evidenced that both of them convert the low pH induced left-handed protonated form of DNA back to the bound right-handed form. Scatchard analysis showed that both the dyes bound strongly to B-form of DNA in a non-cooperative manner. In case of protonated form, there was sequential conversion of the polynucleotide from left-handed to the bound right-handed conformation. Our results suggest that the binding environment of the dyes in the two forms of DNA is similar and our data predict that PSF is more effective in the conversion than ST. Experimental data enabled the calculation of the number of base pairs of protonated-form that adopted a right-handed conformation for each bound dye. Our data revealed that PSF is more effective in the conversion compard to that of ST. These results are attributed to greater steric crowd in ST compared to PSF which restricts the former to intercalate between DNA base pairs. The results of these studies allow a better understanding of dye-polymorphic nucleic acid interactions at a molecular level. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART73319701 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
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| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Phenazinium dyes,Protonated form of DNA,Circular dichroism,Conversion of left handed DNA |