1icg: Difference between revisions
From Proteopedia
Jump to navigationJump to search
m Protected "1icg" [edit=sysop:move=sysop] |
No edit summary |
||
| Line 1: | Line 1: | ||
[[ | ==STRUCTURE OF THE HYBRID RNA/DNA R-GCUUCGGC-D[F]U IN PRESENCE OF IR(NH3)6+++== | ||
<StructureSection load='1icg' size='340' side='right' caption='[[1icg]], [[Resolution|resolution]] 1.53Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1icg]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ICG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ICG FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IRI:IRIDIUM+HEXAMMINE+ION'>IRI</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UFP:5-FLUORO-2-DEOXYURIDINE-5-MONOPHOSPHATE'>UFP</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[165d|165d]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1icg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1icg OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1icg RCSB], [http://www.ebi.ac.uk/pdbsum/1icg PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
In the presence of cobalt, rhodium or iridium hexammine salts, the RNA/DNA hybrid r-GCUUCGGC-d(X)U (with X = F, Cl or Br) crystallizes as a double-stranded helix with four consecutive G-U and C-U mismatches. The deoxy chloro- and bromouracil derivatives are isomorphous, space group C2, unit-cell parameters a = 53.80, b = 19.40, c = 50.31 A, beta = 109.9 degrees, with the same infinite helix arrangement in the packing along the c axis with one extra DNA halogenouracil base included in the stacking. However, the fluorouracil derivative, with unit-cell parameters a = 53.75, b = 19.40, c = 45.84 A, beta = 105.7 degrees, is not isomorphous. The corresponding extra DNA base d(F)U of the second strand is ejected out of the helical stack, leading to a shortening of the c axis. The specific destabilization of the fluorouracil for the duplex building is analyzed in terms of the polarization effect of the halogen atom attached to the 3'-terminal base that modulates its interactions. | |||
Destabilizing effect of a fluorouracil extra base in a hybrid RNA duplex compared with bromo and chloro analogues.,Cruse W, Saludjian P, Neuman A, Prange T Acta Crystallogr D Biol Crystallogr. 2001 Nov;57(Pt 11):1609-13. Epub 2001, Oct 25. PMID:11679725<ref>PMID:11679725</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Cruse, W.]] | [[Category: Cruse, W.]] | ||
[[Category: Neuman, A.]] | [[Category: Neuman, A.]] | ||
Revision as of 05:32, 8 June 2014
STRUCTURE OF THE HYBRID RNA/DNA R-GCUUCGGC-D[F]U IN PRESENCE OF IR(NH3)6+++
| ||||||||||||
