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1l1h
From Proteopedia
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[[Image:1l1h.gif|left|200px]] | [[Image:1l1h.gif|left|200px]] | ||
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'''Crystal Structure of the Quadruplex DNA-Drug Complex''' | '''Crystal Structure of the Quadruplex DNA-Drug Complex''' | ||
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==About this Structure== | ==About this Structure== | ||
| - | + | Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L1H OCA]. | |
==Reference== | ==Reference== | ||
Structure of a G-quadruplex-ligand complex., Haider SM, Parkinson GN, Neidle S, J Mol Biol. 2003 Feb 7;326(1):117-25. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12547195 12547195] | Structure of a G-quadruplex-ligand complex., Haider SM, Parkinson GN, Neidle S, J Mol Biol. 2003 Feb 7;326(1):117-25. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12547195 12547195] | ||
| - | [[Category: Protein complex]] | ||
[[Category: Haider, S M.]] | [[Category: Haider, S M.]] | ||
[[Category: Neidle, S.]] | [[Category: Neidle, S.]] | ||
[[Category: Parkinson, G N.]] | [[Category: Parkinson, G N.]] | ||
| - | [[Category: | + | [[Category: Four-stranded dna]] |
| - | [[Category: | + | [[Category: G-quadruplex]] |
| - | [[Category: | + | [[Category: Oxytricha]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:25:59 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 20:25, 2 May 2008
Crystal Structure of the Quadruplex DNA-Drug Complex
Overview
Stabilisation of G-quadruplex structures formed from telomeric DNA, by means of quadruplex-selective ligands, is a means of inhibiting the telomerase enzyme from catalysing the synthesis of telomeric DNA repeats. In order to understand the molecular basis of ligand-quadruplex recognition, the crystal structure has been determined of such a complex, at 1.75A resolution. This complex is between a dimeric antiparallel G-quadruplex formed from the Oxytricha nova telomeric DNA sequence d(GGGGTTTTGGGG), and a di-substituted aminoalkylamido acridine compound. The structure shows that the acridine moiety is bound at one end of the stack of G-quartets, within one of the thymine loops. It is held in place by a combination of stacking interactions and specific hydrogen bonds with thymine bases. The stability of the ligand in this binding site has been confirmed by a 2ns molecular dynamics simulation.
About this Structure
Full crystallographic information is available from OCA.
Reference
Structure of a G-quadruplex-ligand complex., Haider SM, Parkinson GN, Neidle S, J Mol Biol. 2003 Feb 7;326(1):117-25. PMID:12547195 Page seeded by OCA on Fri May 2 23:25:59 2008
