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1w2d

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Human Inositol (1,4,5)-trisphosphate 3-kinase complexed with Mn2+/ADP/Ins(1,3,4,5)P4

Structural highlights

1w2d is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.94Å
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

IP3KA_HUMAN

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 PubMed

Mammalian cells produce a variety of inositol phosphates (InsPs), including Ins(1,4,5)P3 that serves both as a second messenger and as a substrate for inositol polyphosphate kinases (IPKs), which further phosphorylate it. We report the structure of an IPK, the human Ins(1,4,5)P3 3-kinase-A, both free and in complexes with substrates and products. This enzyme catalyzes transfer of a phosphate from ATP to the 3-OH of Ins(1,4,5)P3, and its X-ray crystal structure provides a template for understanding a broad family of InsP kinases. The catalytic domain consists of three lobes. The N and C lobes bind ATP and resemble protein and lipid kinases, despite insignificant sequence similarity. The third lobe binds inositol phosphate and is a unique four-helix insertion in the C lobe. This lobe embraces all of the phosphates of Ins(1,4,5)P3 in a positively charged pocket, explaining the enzyme's substrate specificity and its inability to phosphorylate PtdIns(4,5)P2, the membrane-resident analog of Ins(1,4,5)P3.

Structure of a human inositol 1,4,5-trisphosphate 3-kinase: substrate binding reveals why it is not a phosphoinositide 3-kinase.,Gonzalez B, Schell MJ, Letcher AJ, Veprintsev DB, Irvine RF, Williams RL Mol Cell. 2004 Sep 10;15(5):689-701. PMID:15350214^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Gonzalez B, Schell MJ, Letcher AJ, Veprintsev DB, Irvine RF, Williams RL. Structure of a human inositol 1,4,5-trisphosphate 3-kinase: substrate binding reveals why it is not a phosphoinositide 3-kinase. Mol Cell. 2004 Sep 10;15(5):689-701. PMID:15350214 doi:10.1016/j.molcel.2004.08.004

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1w2d"

@@ Line 3: / Line 3: @@
 <StructureSection load='1w2d' size='340' side='right'caption='[[1w2d]], [[Resolution|resolution]] 1.94&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1w2d]] is a 2 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=1W2D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1W2D FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1w2d]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W2D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1W2D FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=4IP:INOSITOL-(1,3,4,5)-TETRAKISPHOSPHATE'>4IP</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.94&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1w2c|1w2c]], [[1w2f|1w2f]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4IP:INOSITOL-(1,3,4,5)-TETRAKISPHOSPHATE'>4IP</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Transferase Transferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.7.127 2.1.7.127] </span></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=1w2d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w2d OCA], [https://pdbe.org/1w2d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1w2d RCSB], [https://www.ebi.ac.uk/pdbsum/1w2d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1w2d 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=1w2d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w2d OCA], [http://pdbe.org/1w2d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1w2d RCSB], [http://www.ebi.ac.uk/pdbsum/1w2d PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1w2d ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/IP3KA_HUMAN IP3KA_HUMAN]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 32: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Transferase]]
+[[Category: Gonzalez B]]
-[[Category: Gonzalez, B]]
+[[Category: Irvine RF]]
-[[Category: Irvine, R F]]
+[[Category: Schell MJ]]
-[[Category: Schell, M J]]
+[[Category: Williams RL]]
-[[Category: Williams, R L]]
-[[Category: Adp]]
-[[Category: Inositol phosphate kinase]]
-[[Category: Ip4]]

1w2d

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Current revision

Human Inositol (1,4,5)-trisphosphate 3-kinase complexed with Mn2+/ADP/Ins(1,3,4,5)P4

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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