1d64: Difference between revisions

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{{STRUCTURE_1d64|  PDB=1d64  |  SCENE=  }}  
{{STRUCTURE_1d64|  PDB=1d64  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF A PENTAMIDINE-OLIGONUCLEOTIDE COMPLEX: IMPLICATIONS FOR DNA-BINDING PROPERTIES'''
===CRYSTAL STRUCTURE OF A PENTAMIDINE-OLIGONUCLEOTIDE COMPLEX: IMPLICATIONS FOR DNA-BINDING PROPERTIES===




==Overview==
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The crystal structure of the complex formed between the dodecanucleotide d(CGCGAATTCGCG)2 and the drug pentamidine, which is active against the Pneumocystis carinii pathogen in AIDS patients, has been determined to a resolution of 2.1 A and an R-factor of 19.4%. Analysis of the structure has shown the drug to be bound in the 5'-AATT minor groove region of the duplex, with the amidinium groups H-bonded to adenine N3 atoms in an interstrand manner. The drug molecule adopts an extended conformation, and the immediate binding site spans four base pairs. Structural details of the drug-DNA interactions are discussed, and comparison is made with the dodecamer complex of the structurally similar berenil ligand.
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==About this Structure==
==About this Structure==
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[[Category: Complexed with drug]]
[[Category: Complexed with drug]]
[[Category: Double helix]]
[[Category: Double helix]]
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