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3CWS

Crystal Structure of an AlkA Host/Guest Complex 2'-fluoro-2'-deoxyinosine:Thymine Base Pair

Summary for 3CWS
Entry DOI10.2210/pdb3cws/pdb
Related3CVS 3CVT 3CW7 3CWA 3CWT 3CWU
DescriptorDNA-3-methyladenine glycosylase 2, DNA (5'-D(*DGP*DAP*DCP*DAP*DTP*DGP*DAP*(2FI)P*DTP*DGP*DCP*DC)-3'), DNA (5'-D(*DGP*DGP*DCP*DAP*DTP*DTP*DCP*DAP*DTP*DGP*DTP*DC)-3'), ... (4 entities in total)
Functional Keywordsalka, 2'-fluoro-2'-deoxyinosine, dna repair, host-guest complex, dna structure, dna damage, hydrolase, hydrolase-dna complex, hydrolase/dna
Biological sourceEscherichia coli
Total number of polymer chains8
Total formula weight140388.51
Authors
Bowman, B.R.,Lee, S.,Wang, S.,Verdine, G.L. (deposition date: 2008-04-22, release date: 2008-09-02, Last modification date: 2024-02-21)
Primary citationBowman, B.R.,Lee, S.,Wang, S.,Verdine, G.L.
Structure of the E. coli DNA Glycosylase AlkA Bound to the Ends of Duplex DNA: A System for the Structure Determination of Lesion-Containing DNA.
Structure, 16:1166-1174, 2008
Cited by
PubMed Abstract: The constant attack on DNA by endogenous and exogenous agents gives rise to nucleobase modifications that cause mutations, which can lead to cancer. Visualizing the effects of these lesions on the structure of duplex DNA is key to understanding their biologic consequences. The most definitive method of obtaining such structures, X-ray crystallography, is troublesome to employ owing to the difficulty of obtaining diffraction-quality crystals of DNA. Here, we present a crystallization system that uses a protein, the DNA glycosylase AlkA, as a scaffold to mediate the crystallization of lesion-containing duplex DNA. We demonstrate the use of this system to facilitate the rapid structure determination of DNA containing the lesion 8-oxoguanine in several different sequence contexts, and also deoxyinosine and 1,N(6)-ethenoadenine, each stabilized as the corresponding 2'-flouro analog. The structures of 8-oxoguanine provide a correct atomic-level view of this important endogenous lesion in DNA.
PubMed: 18682218
DOI: 10.1016/j.str.2008.04.012
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (2.3 Å)
Structure validation

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