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Base and chain sense in d(CGCGCG)-BP and d(TATATATATATA). Analysis of CD measurements and x-ray crystal data.

作者信息

Grzeskowiak Kazimierz

机构信息

University of California Los Angeles, Los Angeles, CA 90095-1570, USA.

出版信息

Nucleic Acids Symp Ser (Oxf). 2007(51):273-4. doi: 10.1093/nass/nrm137.

DOI:10.1093/nass/nrm137
PMID:18029692
Abstract

We use CD spectra and x-ray crystal data to compare structures of d(CGCGCG)-BP, which is d(CGCGCG) modified on 2-amino group of guanine by (+)7R,8S-dihydroxy-9S,10R-expoxy-7,8,9,10-tetra hydroBenzo(a)Pyrene (7R-BPDE), with the d(TA)6 dodecamer which with increasing ionic strength of the buffer adopts CD spectrum similar to d(CGCGCG)-BP in 0.1M MgCl2 solution but opposite in sign. We indicates that DNA bases in both oligomers may be in a B-form however as a mirror image of stereo structure of right handed d(CGCGCG)-BP and left handed d(TA)6.

摘要

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