6or0: Difference between revisions
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==Crystal structure of Insulin from Non-merohedrally twinned crystals== | |||
<StructureSection load='6or0' size='340' side='right'caption='[[6or0]], [[Resolution|resolution]] 1.55Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6or0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OR0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6OR0 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.55Å</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=6or0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6or0 OCA], [https://pdbe.org/6or0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6or0 RCSB], [https://www.ebi.ac.uk/pdbsum/6or0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6or0 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/INS_BOVIN INS_BOVIN] Insulin decreases blood glucose concentration. It increases cell permeability to monosaccharides, amino acids and fatty acids. It accelerates glycolysis, the pentose phosphate cycle, and glycogen synthesis in liver. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
In contrast to twinning by merohedry, the reciprocal lattices of the different domains of non-merohedral twins do not overlap exactly. This leads to three kinds of reflections: reflections with no overlap, reflections with an exact overlap and reflections with a partial overlap of a reflection from a second domain. This complicates the unit-cell determination, indexing, data integration and scaling of X-ray diffraction data. However, with hindsight it is possible to detwin the data because there are reflections that are not affected by the twinning. In this article, the successful solution and refinement of one mineral, one organometallic and two protein non-merohedral twins using a common strategy are described. The unit-cell constants and the orientation matrices were determined by the program CELL_NOW. The data were then integrated with SAINT. TWINABS was used for scaling, empirical absorption corrections and the generation of two different data files, one with detwinned data for structure solution and refinement and a second one for (usually more accurate) structure refinement against total integrated intensities. The structures were solved by experimental phasing using SHELXT for the first two structures and SHELXC/D/E for the two protein structures; all models were refined with SHELXL. | |||
Non-merohedral twinning: from minerals to proteins.,Sevvana M, Ruf M, Uson I, Sheldrick GM, Herbst-Irmer R Acta Crystallogr D Struct Biol. 2019 Dec 1;75(Pt 12):1040-1050. doi:, 10.1107/S2059798319010179. Epub 2019 Nov 19. PMID:31793898<ref>PMID:31793898</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Herbst-Irmer | <div class="pdbe-citations 6or0" style="background-color:#fffaf0;"></div> | ||
[[Category: | |||
[[Category: | ==See Also== | ||
[[Category: | *[[Insulin 3D Structures|Insulin 3D Structures]] | ||
[[Category: | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bos taurus]] | |||
[[Category: Large Structures]] | |||
[[Category: Herbst-Irmer R]] | |||
[[Category: Ruf M]] | |||
[[Category: Sevvana M]] | |||
[[Category: Sheldrick GM]] | |||
[[Category: Uson I]] | |||