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| | ==Thermotoga maritima IMPase TM1415== | | ==Thermotoga maritima IMPase TM1415== |
| - | <StructureSection load='2p3v' size='340' side='right' caption='[[2p3v]], [[Resolution|resolution]] 2.40Å' scene=''> | + | <StructureSection load='2p3v' size='340' side='right'caption='[[2p3v]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2p3v]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Thema Thema]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2P3V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2P3V FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2p3v]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima_MSB8 Thermotoga maritima MSB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2P3V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2P3V FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SRT:S,R+MESO-TARTARIC+ACID'>SRT</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]] 2.4Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2p3n|2p3n]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SRT:S,R+MESO-TARTARIC+ACID'>SRT</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">suhB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=243274 THEMA])</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=2p3v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2p3v OCA], [https://pdbe.org/2p3v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2p3v RCSB], [https://www.ebi.ac.uk/pdbsum/2p3v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2p3v ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Inositol-phosphate_phosphatase Inositol-phosphate phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.25 3.1.3.25] </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=2p3v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2p3v OCA], [http://pdbe.org/2p3v PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2p3v RCSB], [http://www.ebi.ac.uk/pdbsum/2p3v PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2p3v ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/BSUHB_THEMA BSUHB_THEMA]] Phosphatase with broad specificity; it can dephosphorylate fructose 1,6-bisphosphate, both D and L isomers of inositol-1-phosphate (I-1-P) but displaying a 20-fold higher rate of hydrolysis of D-I-1-P than of the L isomer, 2'-AMP, pNPP, inositol-2-phosphate, beta-glycerol phosphate, and alpha-D-glucose-1-phosphate. Cannot hydrolyze glucose-6-phosphate, fructose-6-phosphate, 5'-AMP and NAD(+). May be involved in the biosynthesis of a unique osmolyte, di-myo-inositol 1,1-phosphate.<ref>PMID:10508089</ref> <ref>PMID:11062561</ref> | + | [https://www.uniprot.org/uniprot/BSUHB_THEMA BSUHB_THEMA] Phosphatase with broad specificity; it can dephosphorylate fructose 1,6-bisphosphate, both D and L isomers of inositol-1-phosphate (I-1-P) but displaying a 20-fold higher rate of hydrolysis of D-I-1-P than of the L isomer, 2'-AMP, pNPP, inositol-2-phosphate, beta-glycerol phosphate, and alpha-D-glucose-1-phosphate. Cannot hydrolyze glucose-6-phosphate, fructose-6-phosphate, 5'-AMP and NAD(+). May be involved in the biosynthesis of a unique osmolyte, di-myo-inositol 1,1-phosphate.<ref>PMID:10508089</ref> <ref>PMID:11062561</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | ==See Also== | | ==See Also== |
| - | *[[Inositol Monophosphatase|Inositol Monophosphatase]] | + | *[[Inositol monophosphatase 3D structures|Inositol monophosphatase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Inositol-phosphate phosphatase]] | + | [[Category: Large Structures]] |
| - | [[Category: Thema]] | + | [[Category: Thermotoga maritima MSB8]] |
| - | [[Category: Li, W]] | + | [[Category: Li W]] |
| - | [[Category: Roberts, M F]] | + | [[Category: Roberts MF]] |
| - | [[Category: Stec, B]] | + | [[Category: Stec B]] |
| - | [[Category: Stieglitz, K A]] | + | [[Category: Stieglitz KA]] |
| - | [[Category: Asymmetric tetramer]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Inositol]]
| + | |
| - | [[Category: Phosphatase]]
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| Structural highlights
Function
BSUHB_THEMA Phosphatase with broad specificity; it can dephosphorylate fructose 1,6-bisphosphate, both D and L isomers of inositol-1-phosphate (I-1-P) but displaying a 20-fold higher rate of hydrolysis of D-I-1-P than of the L isomer, 2'-AMP, pNPP, inositol-2-phosphate, beta-glycerol phosphate, and alpha-D-glucose-1-phosphate. Cannot hydrolyze glucose-6-phosphate, fructose-6-phosphate, 5'-AMP and NAD(+). May be involved in the biosynthesis of a unique osmolyte, di-myo-inositol 1,1-phosphate.[1] [2]
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
The structure of the first tetrameric inositol monophosphatase (IMPase) has been solved. This enzyme, from the eubacterium Thermotoga maritima, similarly to its archaeal homologs exhibits dual specificity with both IMPase and fructose-1,6-bisphosphatase activities. The tetrameric structure of this unregulated enzyme is similar, in its quaternary assembly, to the allosterically regulated tetramer of fructose-1,6-bisphosphatase. The individual dimers are similar to the human IMPase. Additionally, the structures of two crystal forms of IMPase show significant differences. In the first crystal form, the tetrameric structure is symmetrical, with the active site loop in each subunit folded into a beta-hairpin conformation. The second form is asymmetrical and shows an unusual structural change. Two of the subunits have the active site loop folded into a beta-hairpin structure, whereas in the remaining two subunits the same loop adopts an alpha-helical conformation.
Crystal structure of the tetrameric inositol 1-phosphate phosphatase (TM1415) from the hyperthermophile, Thermotoga maritima.,Stieglitz KA, Roberts MF, Li W, Stec B FEBS J. 2007 May;274(10):2461-9. Epub 2007 Apr 10. PMID:17419729[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chen L, Roberts MF. Characterization of a tetrameric inositol monophosphatase from the hyperthermophilic bacterium Thermotoga maritima. Appl Environ Microbiol. 1999 Oct;65(10):4559-67. PMID:10508089
- ↑ Stec B, Yang H, Johnson KA, Chen L, Roberts MF. MJ0109 is an enzyme that is both an inositol monophosphatase and the 'missing' archaeal fructose-1,6-bisphosphatase. Nat Struct Biol. 2000 Nov;7(11):1046-50. PMID:11062561 doi:10.1038/80968
- ↑ Stieglitz KA, Roberts MF, Li W, Stec B. Crystal structure of the tetrameric inositol 1-phosphate phosphatase (TM1415) from the hyperthermophile, Thermotoga maritima. FEBS J. 2007 May;274(10):2461-9. Epub 2007 Apr 10. PMID:17419729 doi:http://dx.doi.org/10.1111/j.0014-2956.2007.05779.x
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