365d: Difference between revisions
New page: left|200px<br /><applet load="365d" size="350" color="white" frame="true" align="right" spinBox="true" caption="365d, resolution 2.000Å" /> '''STRUCTURAL BASIS FO... |
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==Overview== | ==Overview== | ||
Small molecules that target specific DNA sequences offer a potentially | Small molecules that target specific DNA sequences offer a potentially general approach for the regulation of gene expression. Pyrrole-imidazole polyamides represent the only class of synthetic small molecules that can bind predetermined DNA sequences with affinities and specificities comparable to DNA binding proteins. Antiparallel side-by-side pairings of two aromatic amino acids, imidazole (Im) and pyrrole (Py), distinguish G.C from C.G, and both from A.T/T.A base pairs. A high resolution X-ray crystal structure of a four-ring pyrrole-imidazole polyamide specifically bound as a dimer to a six-base pair predetermined DNA site reveals a structural framework of hydrogen bonds and interactions with the walls of the minor groove that underlies the pairing rules for DNA recognition. | ||
==About this Structure== | ==About this Structure== | ||
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Structural basis for G.C recognition in the DNA minor groove., Kielkopf CL, Baird EE, Dervan PB, Rees DC, Nat Struct Biol. 1998 Feb;5(2):104-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9461074 9461074] | Structural basis for G.C recognition in the DNA minor groove., Kielkopf CL, Baird EE, Dervan PB, Rees DC, Nat Struct Biol. 1998 Feb;5(2):104-9. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9461074 9461074] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Baird, E | [[Category: Baird, E E.]] | ||
[[Category: Dervan, P | [[Category: Dervan, P B.]] | ||
[[Category: Kielkopf, C | [[Category: Kielkopf, C L.]] | ||
[[Category: Rees, D | [[Category: Rees, D C.]] | ||
[[Category: IIP]] | [[Category: IIP]] | ||
[[Category: b-dna]] | [[Category: b-dna]] | ||
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[[Category: modified]] | [[Category: modified]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 19:02:20 2008'' |