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| | ==Crystal structure of Leptospira Interrogans Triosephosphate Isomerase (LiTIM)== | | ==Crystal structure of Leptospira Interrogans Triosephosphate Isomerase (LiTIM)== |
| - | <StructureSection load='4x22' size='340' side='right' caption='[[4x22]], [[Resolution|resolution]] 2.08Å' scene=''> | + | <StructureSection load='4x22' size='340' side='right'caption='[[4x22]], [[Resolution|resolution]] 2.08Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4x22]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Leptospira_interrogans_serovar_icterohaemorrhagiae_str._rga Leptospira interrogans serovar icterohaemorrhagiae str. rga]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X22 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4X22 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4x22]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Leptospira_interrogans_serovar_Icterohaemorrhagiae_str._RGA Leptospira interrogans serovar Icterohaemorrhagiae str. RGA]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X22 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4X22 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=PG0:2-(2-METHOXYETHOXY)ETHANOL'>PG0</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=PG0:2-(2-METHOXYETHOXY)ETHANOL'>PG0</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LEP2GSC113_RS0110880 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1291351 Leptospira interrogans serovar Icterohaemorrhagiae str. RGA])</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=4x22 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x22 OCA], [https://pdbe.org/4x22 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4x22 RCSB], [https://www.ebi.ac.uk/pdbsum/4x22 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4x22 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/Triose-phosphate_isomerase Triose-phosphate isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.1.1 5.3.1.1] </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=4x22 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x22 OCA], [http://pdbe.org/4x22 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4x22 RCSB], [http://www.ebi.ac.uk/pdbsum/4x22 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4x22 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/TPIS_LEPIN TPIS_LEPIN] Involved in the gluconeogenesis. Catalyzes stereospecifically the conversion of dihydroxyacetone phosphate (DHAP) to D-glyceraldehyde-3-phosphate (G3P).[HAMAP-Rule:MF_00147] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[Triose Phosphate Isomerase|Triose Phosphate Isomerase]] | + | *[[Triose phosphate isomerase 3D structures|Triose phosphate isomerase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Leptospira interrogans serovar icterohaemorrhagiae str. rga]] | + | [[Category: Large Structures]] |
| - | [[Category: Triose-phosphate isomerase]] | + | [[Category: Leptospira interrogans serovar Icterohaemorrhagiae str. RGA]] |
| - | [[Category: Balaram, P]] | + | [[Category: Balaram P]] |
| - | [[Category: Murthy, M R.N]] | + | [[Category: Murthy MRN]] |
| - | [[Category: Pareek, V]] | + | [[Category: Pareek V]] |
| - | [[Category: Beta-alpha barrel]]
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| - | [[Category: Isomerase]]
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| - | [[Category: Tim barrel]]
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| Structural highlights
Function
TPIS_LEPIN Involved in the gluconeogenesis. Catalyzes stereospecifically the conversion of dihydroxyacetone phosphate (DHAP) to D-glyceraldehyde-3-phosphate (G3P).[HAMAP-Rule:MF_00147]
Publication Abstract from PubMed
Despite extensive research on triosephosphate isomerase (TIM), there exists a gap in understanding the remarkable conjunction between catalytic loop-6 (residue 166-176) movement and conformational flip of Glu165 (catalytic base) upon substrate binding, thus priming the active site for efficient catalysis. The overwhelming occurrence of Ser at position 96 (98% of the 6277 unique TIM sequences), spatially proximal to E165 and the loop-6 residues, raises questions about its role in catalysis. Notably, Plasmodium falciparum TIM has an extremely rare residue, Phe, at this position and curiously, the mutant F96S was catalytically defective. We provide insights into the influence of residue 96 on the loop-6 dynamics and E165 positioning by combining the kinetic and structural studies on the PfTIM F96 mutants, F96Y, F96A, F96S/S73A and F96S/L167V with sequence conservation analysis and comparative analysis of the available apo and holo structures of the enzyme from diverse organisms.
Connecting active site loop conformations and catalysis in triosephosphate isomerase: insights from a rare variation at residue 96 in the plasmodial enzyme.,Pareek V, Samanta M, Joshi NV, Balaram H, Murthy MR, Balaram P Chembiochem. 2016 Jan 14. doi: 10.1002/cbic.201500532. PMID:26762569[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Pareek V, Samanta M, Joshi NV, Balaram H, Murthy MR, Balaram P. Connecting active site loop conformations and catalysis in triosephosphate isomerase: insights from a rare variation at residue 96 in the plasmodial enzyme. Chembiochem. 2016 Jan 14. doi: 10.1002/cbic.201500532. PMID:26762569 doi:http://dx.doi.org/10.1002/cbic.201500532
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