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| | <StructureSection load='4pla' size='340' side='right'caption='[[4pla]], [[Resolution|resolution]] 2.77Å' scene=''> | | <StructureSection load='4pla' size='340' side='right'caption='[[4pla]], [[Resolution|resolution]] 2.77Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4pla]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PLA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4PLA FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4pla]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_virus_T4 Escherichia virus T4] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PLA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4PLA FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PI4K2A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=4pla FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pla OCA], [https://pdbe.org/4pla PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4pla RCSB], [https://www.ebi.ac.uk/pdbsum/4pla PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4pla ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4pla FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pla OCA], [http://pdbe.org/4pla PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4pla RCSB], [http://www.ebi.ac.uk/pdbsum/4pla PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4pla ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/P4K2A_HUMAN P4K2A_HUMAN]] Together with PI4K2B and the type III PI4Ks (PIK4CA and PIK4CB) it contributes to the overall PI4-kinase activity of the cell. The phosphorylation of phosphatidylinositol (PI) to PI4P is the first committed step in the generation of phosphatidylinositol 4,5-bisphosphate (PIP2), a precursor of the second messenger inositol 1,4,5-trisphosphate (InsP3). Contributes to the production of InsP3 in stimulated cells (By similarity). This lipid kinase is the major phosphatidylinositol 4-phosphate (PI4P) producer in the Golgi apparatus, it generates more than 50% of this molecule which is essential for the identity of the organelle, protein sorting and membrane trafficking. | + | [https://www.uniprot.org/uniprot/D9IEF7_BPT4 D9IEF7_BPT4] [https://www.uniprot.org/uniprot/P4K2A_HUMAN P4K2A_HUMAN] Together with PI4K2B and the type III PI4Ks (PIK4CA and PIK4CB) it contributes to the overall PI4-kinase activity of the cell. The phosphorylation of phosphatidylinositol (PI) to PI4P is the first committed step in the generation of phosphatidylinositol 4,5-bisphosphate (PIP2), a precursor of the second messenger inositol 1,4,5-trisphosphate (InsP3). Contributes to the production of InsP3 in stimulated cells (By similarity). This lipid kinase is the major phosphatidylinositol 4-phosphate (PI4P) producer in the Golgi apparatus, it generates more than 50% of this molecule which is essential for the identity of the organelle, protein sorting and membrane trafficking. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4pla" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4pla" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Phosphatidylinositol 4-kinase|Phosphatidylinositol 4-kinase]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Escherichia virus T4]] |
| | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Baumlova, A]] | + | [[Category: Baumlova A]] |
| - | [[Category: Boura, E]] | + | [[Category: Boura E]] |
| - | [[Category: Chalupska, D]] | + | [[Category: Chalupska D]] |
| - | [[Category: 4-kinase]]
| + | |
| - | [[Category: Atp]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Lipid]]
| + | |
| - | [[Category: Phosphatidyl inositol]]
| + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
D9IEF7_BPT4 P4K2A_HUMAN Together with PI4K2B and the type III PI4Ks (PIK4CA and PIK4CB) it contributes to the overall PI4-kinase activity of the cell. The phosphorylation of phosphatidylinositol (PI) to PI4P is the first committed step in the generation of phosphatidylinositol 4,5-bisphosphate (PIP2), a precursor of the second messenger inositol 1,4,5-trisphosphate (InsP3). Contributes to the production of InsP3 in stimulated cells (By similarity). This lipid kinase is the major phosphatidylinositol 4-phosphate (PI4P) producer in the Golgi apparatus, it generates more than 50% of this molecule which is essential for the identity of the organelle, protein sorting and membrane trafficking.
Publication Abstract from PubMed
Phosphoinositides are a class of phospholipids generated by the action of phosphoinositide kinases with key regulatory functions in eukaryotic cells. Here, we present the atomic structure of phosphatidylinositol 4-kinase type IIalpha (PI4K IIalpha), in complex with ATP solved by X-ray crystallography at 2.8 A resolution. The structure revealed a non-typical kinase fold that could be divided into N- and C-lobes with the ATP binding groove located in between. Surprisingly, a second ATP was found in a lateral hydrophobic pocket of the C-lobe. Molecular simulations and mutagenesis analysis revealed the membrane binding mode and the putative function of the hydrophobic pocket. Taken together, our results suggest a mechanism of PI4K IIalpha recruitment, regulation, and function at the membrane.
The crystal structure of the phosphatidylinositol 4-kinase IIalpha,Baumlova A, Chalupska D, Rozycki B, Jovic M, Wisniewski E, Klima M, Dubankova A, Kloer DP, Nencka R, Balla T, Boura E EMBO Rep. 2014 Aug 28. pii: e201438841. PMID:25168678[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Baumlova A, Chalupska D, Rozycki B, Jovic M, Wisniewski E, Klima M, Dubankova A, Kloer DP, Nencka R, Balla T, Boura E. The crystal structure of the phosphatidylinositol 4-kinase IIalpha EMBO Rep. 2014 Aug 28. pii: e201438841. PMID:25168678 doi:http://dx.doi.org/10.15252/embr.201438841
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