1da2

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{{STRUCTURE_1da2| PDB=1da2 | SCENE= }}
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'''MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA'''
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===MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA===
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==Overview==
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The base analogue N4-methoxycytosine (mo4C) is ambivalent in its hydrogen-bonding potential, since it forms stable base-pairs with both adenine and guanine in oligomer duplexes. To investigate the base-pair geometry, the structure of d(CGCGmo4CG) has been determined by single-crystal X-ray diffraction techniques. The d(CGCGmo4CG)2 crystallized in a left-handed double helical structure (Z-type). Refinement using 2559 reflections between 10 and 1.7 A converged with a final R = 0.181 (Rw = 0.130) including 68 solvent molecules. The orthorhombic crystals are in the space group P2(1)2(1)2(1), with cell dimensions a = 18.17 A, b = 30.36 A, c = 43.93 A. The mo4C.G base-pair is of the wobble type, with mo4C in the imino form, and the methoxy group in the syn configuration.
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(as it appears on PubMed at http://www.pubmed.gov), where 2258939 is the PubMed ID number.
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{{ABSTRACT_PUBMED_2258939}}
==About this Structure==
==About this Structure==
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[[Category: Modified]]
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[[Category: Z-dna]]
[[Category: Z-dna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 22:44:00 2008''

Revision as of 19:44, 30 June 2008

Image:1da2.png

Template:STRUCTURE 1da2

MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA

Template:ABSTRACT PUBMED 2258939

About this Structure

Full crystallographic information is available from OCA.

Reference

Molecular and crystal structure of d(CGCGmo4CG): N4-methoxycytosine.guanine base-pairs in Z-DNA., Van Meervelt L, Moore MH, Lin PK, Brown DM, Kennard O, J Mol Biol. 1990 Dec 5;216(3):773-81. PMID:2258939

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