2a5r
From Proteopedia
(Difference between revisions)
| (One intermediate revision not shown.) | |||
| Line 1: | Line 1: | ||
==Complex of tetra-(4-n-methylpyridyl) porphin with monomeric parallel-stranded DNA tetraplex, snap-back 3+1 3' G-tetrad, single-residue chain reversal loops, GAG triad in the context of GAAG diagonal loop, C-MYC promoter, NMR, 6 struct.== | ==Complex of tetra-(4-n-methylpyridyl) porphin with monomeric parallel-stranded DNA tetraplex, snap-back 3+1 3' G-tetrad, single-residue chain reversal loops, GAG triad in the context of GAAG diagonal loop, C-MYC promoter, NMR, 6 struct.== | ||
| - | <StructureSection load='2a5r' size='340' side='right'caption='[[2a5r | + | <StructureSection load='2a5r' size='340' side='right'caption='[[2a5r]]' scene=''> |
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2a5r]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A5R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A5R FirstGlance]. <br> | <table><tr><td colspan='2'>[[2a5r]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A5R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A5R FirstGlance]. <br> | ||
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=POH:(1Z,4Z,9Z,15Z)-5,10,15,20-TETRAKIS(1-METHYLPYRIDIN-1-IUM-4-YL)-21,23-DIHYDROPORPHYRIN'>POH</scene></td></tr> |
| - | + | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2a5r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a5r OCA], [https://pdbe.org/2a5r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a5r RCSB], [https://www.ebi.ac.uk/pdbsum/2a5r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a5r ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2a5r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a5r OCA], [https://pdbe.org/2a5r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a5r RCSB], [https://www.ebi.ac.uk/pdbsum/2a5r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a5r ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | It has been widely accepted that DNA can adopt other biologically relevant structures beside the Watson-Crick double helix. One recent important example is the guanine-quadruplex (G-quadruplex) structure formed by guanine tracts found in the MYC (or c-myc) promoter region, which regulates the transcription of the MYC oncogene. Stabilization of this G-quadruplex by ligands, such as the cationic porphyrin TMPyP4, decreases the transcriptional level of MYC. Here, we report the first structure of a DNA fragment containing five guanine tracts from this region. An unusual G-quadruplex fold, which was derived from NMR restraints using unambiguous model-independent resonance assignment approaches, involves a core of three stacked guanine tetrads formed by four parallel guanine tracts with all anti guanines and a snapback 3'-end syn guanine. We have determined the structure of the complex formed between this G-quadruplex and TMPyP4. This structural information, combined with details of small-molecule interaction, provides a platform for the design of anticancer drugs targeting multi-guanine-tract sequences that are found in the MYC and other oncogenic promoters, as well as in telomeres. | ||
| - | |||
| - | Small-molecule interaction with a five-guanine-tract G-quadruplex structure from the human MYC promoter.,Phan AT, Kuryavyi V, Gaw HY, Patel DJ Nat Chem Biol. 2005 Aug;1(3):167-73. Epub 2005 Jul 17. PMID:16408022<ref>PMID:16408022</ref> | ||
| - | |||
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 2a5r" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Gaw | + | [[Category: Gaw HY]] |
| - | [[Category: Kuryavyi | + | [[Category: Kuryavyi VV]] |
| - | [[Category: Patel | + | [[Category: Patel DJ]] |
| - | [[Category: Phan | + | [[Category: Phan AT]] |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
Current revision
Complex of tetra-(4-n-methylpyridyl) porphin with monomeric parallel-stranded DNA tetraplex, snap-back 3+1 3' G-tetrad, single-residue chain reversal loops, GAG triad in the context of GAAG diagonal loop, C-MYC promoter, NMR, 6 struct.
| |||||||||||
