1yp2: Difference between revisions
No edit summary |
No edit summary |
||
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
==Crystal structure of potato tuber ADP-glucose pyrophosphorylase== | ==Crystal structure of potato tuber ADP-glucose pyrophosphorylase== | ||
<StructureSection load='1yp2' size='340' side='right' caption='[[1yp2]], [[Resolution|resolution]] 2.11Å' scene=''> | <StructureSection load='1yp2' size='340' side='right'caption='[[1yp2]], [[Resolution|resolution]] 2.11Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1yp2]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1yp2]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Solanum_tuberosum Solanum tuberosum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YP2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YP2 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">X-ray diffraction, [[Resolution|Resolution]] 2.11Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PMB:PARA-MERCURY-BENZENESULFONIC+ACID'>PMB</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1yp2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yp2 OCA], [https://pdbe.org/1yp2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yp2 RCSB], [https://www.ebi.ac.uk/pdbsum/1yp2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yp2 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/GLGS_SOLTU GLGS_SOLTU] This protein plays a role in synthesis of starch. It catalyzes the synthesis of the activated glycosyl donor, ADP-glucose from Glc-1-P and ATP. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 15: | Line 15: | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/yp/1yp2_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/yp/1yp2_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/ | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
| Line 33: | Line 33: | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Solanum tuberosum]] | ||
[[Category: Ballicora | [[Category: Ballicora MA]] | ||
[[Category: Geiger | [[Category: Geiger JH]] | ||
[[Category: Jin | [[Category: Jin X]] | ||
[[Category: Preiss | [[Category: Preiss J]] | ||
Latest revision as of 10:42, 30 October 2024
Crystal structure of potato tuber ADP-glucose pyrophosphorylaseCrystal structure of potato tuber ADP-glucose pyrophosphorylase
Structural highlights
FunctionGLGS_SOLTU This protein plays a role in synthesis of starch. It catalyzes the synthesis of the activated glycosyl donor, ADP-glucose from Glc-1-P and ATP. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedADP-glucose pyrophosphorylase catalyzes the first committed and rate-limiting step in starch biosynthesis in plants and glycogen biosynthesis in bacteria. It is the enzymatic site for regulation of storage polysaccharide accumulation in plants and bacteria, being allosterically activated or inhibited by metabolites of energy flux. We report the first atomic resolution structure of ADP-glucose pyrophosphorylase. Crystals of potato tuber ADP-glucose pyrophosphorylase alpha subunit were grown in high concentrations of sulfate, resulting in the sulfate-bound, allosterically inhibited form of the enzyme. The N-terminal catalytic domain resembles a dinucleotide-binding Rossmann fold and the C-terminal domain adopts a left-handed parallel beta helix that is involved in cooperative allosteric regulation and a unique oligomerization. We also report structures of the enzyme in complex with ATP and ADP-glucose. Communication between the regulator-binding sites and the active site is both subtle and complex and involves several distinct regions of the enzyme including the N-terminus, the glucose-1-phosphate-binding site, and the ATP-binding site. These structures provide insights into the mechanism for catalysis and allosteric regulation of the enzyme. Crystal structure of potato tuber ADP-glucose pyrophosphorylase.,Jin X, Ballicora MA, Preiss J, Geiger JH EMBO J. 2005 Feb 23;24(4):694-704. Epub 2005 Feb 3. PMID:15692569[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
| ||||||||||||||||||