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==CRYSTAL STRUCTURE OF THE CATALYTIC CORE OF INOSITOL 1,4,5-TRISPHOSPHATE 3-KINASE== | |||
<StructureSection load='1tzd' size='340' side='right'caption='[[1tzd]], [[Resolution|resolution]] 2.20Å' scene=''> | |||
| | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1tzd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TZD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TZD 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]] 2.2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</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=1tzd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tzd OCA], [https://pdbe.org/1tzd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tzd RCSB], [https://www.ebi.ac.uk/pdbsum/1tzd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tzd ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/IP3KA_RAT IP3KA_RAT] | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
== | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/tz/1tzd_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1tzd ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Soluble inositol polyphosphates are ubiquitous second messengers in eukaryotes, and their levels are regulated by an array of specialized kinases. The structure of an archetypal member of this class, inositol 1,4,5-trisphosphate 3-kinase (IP3K), has been determined at 2.2 angstroms resolution in complex with magnesium and adenosine diphosphate. IP3K contains a catalytic domain that is a variant of the protein kinase superfamily, and a novel four-helix substrate binding domain. The two domains are in an open conformation with respect to each other, suggesting that substrate recognition and catalysis by IP3K involves a dynamic conformational cycle. The unique helical domain of IP3K blocks access to the active site by membrane-bound phosphoinositides, explaining the structural basis for soluble inositol polyphosphate specificity. | Soluble inositol polyphosphates are ubiquitous second messengers in eukaryotes, and their levels are regulated by an array of specialized kinases. The structure of an archetypal member of this class, inositol 1,4,5-trisphosphate 3-kinase (IP3K), has been determined at 2.2 angstroms resolution in complex with magnesium and adenosine diphosphate. IP3K contains a catalytic domain that is a variant of the protein kinase superfamily, and a novel four-helix substrate binding domain. The two domains are in an open conformation with respect to each other, suggesting that substrate recognition and catalysis by IP3K involves a dynamic conformational cycle. The unique helical domain of IP3K blocks access to the active site by membrane-bound phosphoinositides, explaining the structural basis for soluble inositol polyphosphate specificity. | ||
Crystal structure of the catalytic core of inositol 1,4,5-trisphosphate 3-kinase.,Miller GJ, Hurley JH Mol Cell. 2004 Sep 10;15(5):703-11. PMID:15350215<ref>PMID:15350215</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
[[Category: | <div class="pdbe-citations 1tzd" style="background-color:#fffaf0;"></div> | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
[[Category: Hurley JH]] | |||
[[Category: Hurley | [[Category: Miller GJ]] | ||
[[Category: Miller | |||
Latest revision as of 03:32, 21 November 2024
CRYSTAL STRUCTURE OF THE CATALYTIC CORE OF INOSITOL 1,4,5-TRISPHOSPHATE 3-KINASECRYSTAL STRUCTURE OF THE CATALYTIC CORE OF INOSITOL 1,4,5-TRISPHOSPHATE 3-KINASE
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedSoluble inositol polyphosphates are ubiquitous second messengers in eukaryotes, and their levels are regulated by an array of specialized kinases. The structure of an archetypal member of this class, inositol 1,4,5-trisphosphate 3-kinase (IP3K), has been determined at 2.2 angstroms resolution in complex with magnesium and adenosine diphosphate. IP3K contains a catalytic domain that is a variant of the protein kinase superfamily, and a novel four-helix substrate binding domain. The two domains are in an open conformation with respect to each other, suggesting that substrate recognition and catalysis by IP3K involves a dynamic conformational cycle. The unique helical domain of IP3K blocks access to the active site by membrane-bound phosphoinositides, explaining the structural basis for soluble inositol polyphosphate specificity. Crystal structure of the catalytic core of inositol 1,4,5-trisphosphate 3-kinase.,Miller GJ, Hurley JH Mol Cell. 2004 Sep 10;15(5):703-11. PMID:15350215[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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