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159d

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[[Image:159d.gif|left|200px]]
 
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==SIDE BY SIDE BINDING OF TWO DISTAMYCIN A DRUGS IN THE MINOR GROOVE OF AN ALTERNATING B-DNA DUPLEX==
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The line below this paragraph, containing "STRUCTURE_159d", creates the "Structure Box" on the page.
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<StructureSection load='159d' size='340' side='right'caption='[[159d]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[159d]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=159D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=159D FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DMY:DISTAMYCIN+A'>DMY</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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{{STRUCTURE_159d| PDB=159d | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=159d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=159d OCA], [https://pdbe.org/159d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=159d RCSB], [https://www.ebi.ac.uk/pdbsum/159d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=159d ProSAT]</span></td></tr>
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</table>
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'''SIDE BY SIDE BINDING OF TWO DISTAMYCIN A DRUGS IN THE MINOR GROOVE OF AN ALTERNATING B-DNA DUPLEX'''
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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==Overview==
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[[Category: Chen X]]
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Here we report the 1.8A X-ray structure of a 2:1 drug-DNA complex between distamycin A and an alternating B-DNA octamer duplex d(ICICICIC)2. The two distamycin A molecules are bound side by side with dyad symmetry in an antiparallel orientation in the expanded minor groove. The amides of each drug molecule are hydrogen bonded to the minor groove base atoms of only one DNA strand. The complex not only shows binding of two drug molecules, but the DNA duplex also exhibits striking low-high alternations in the helical twist angles, the sugar puckering and the phosphate conformations, providing the basis for a new model for an alternating B-DNA with a dinucleotide repeat.
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[[Category: Ramakrishnan B]]
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[[Category: Rao ST]]
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==About this Structure==
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[[Category: Sundaralingam M]]
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=159D OCA].
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==Reference==
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Binding of two distamycin A molecules in the minor groove of an alternating B-DNA duplex., Chen X, Ramakrishnan B, Rao ST, Sundaralingam M, Nat Struct Biol. 1994 Mar;1(3):169-75. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7656035 7656035]
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[[Category: Chen, X.]]
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[[Category: Ramakrishnan, B.]]
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[[Category: Rao, S T.]]
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[[Category: Sundaralingam, M.]]
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[[Category: B-dna]]
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[[Category: Complexed with drug]]
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[[Category: Double helix]]
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[[Category: Modified]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:31:36 2008''
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Current revision

SIDE BY SIDE BINDING OF TWO DISTAMYCIN A DRUGS IN THE MINOR GROOVE OF AN ALTERNATING B-DNA DUPLEX

PDB ID 159d

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