4e3w
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4e3w]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Francisella_tularensis_subsp._holarctica_LVS Francisella tularensis subsp. holarctica LVS]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E3W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4E3W FirstGlance]. <br> | <table><tr><td colspan='2'>[[4e3w]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Francisella_tularensis_subsp._holarctica_LVS Francisella tularensis subsp. holarctica LVS]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E3W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4E3W FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PRO:PROLINE'>PRO</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]] 1.75Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PRO:PROLINE'>PRO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4e3w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4e3w OCA], [https://pdbe.org/4e3w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4e3w RCSB], [https://www.ebi.ac.uk/pdbsum/4e3w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4e3w ProSAT]</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=4e3w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4e3w OCA], [https://pdbe.org/4e3w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4e3w RCSB], [https://www.ebi.ac.uk/pdbsum/4e3w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4e3w ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | L-Proline is one of Mother Nature's cryoprotectants. Plants and yeast accumulate proline under freeze-induced stress and the use of proline in the cryopreservation of biological samples is well established. Here, it is shown that L-proline is also a useful cryoprotectant for protein crystallography. Proline was used to prepare crystals of lysozyme, xylose isomerase, histidine acid phosphatase and 1-pyrroline-5-carboxylate dehydrogenase for low-temperature data collection. The crystallization solutions in these test cases included the commonly used precipitants ammonium sulfate, sodium chloride and polyethylene glycol and spanned the pH range 4.6-8.5. Thus, proline is compatible with typical protein-crystallization formulations. The proline concentration needed for cryoprotection of these crystals is in the range 2.0-3.0 M. Complete data sets were collected from the proline-protected crystals. Proline performed as well as traditional cryoprotectants based on the diffraction resolution and data-quality statistics. The structures were refined to assess the binding of proline to these proteins. As observed with traditional cryoprotectants such as glycerol and ethylene glycol, the electron-density maps clearly showed the presence of proline molecules bound to the protein. In two cases, histidine acid phosphatase and 1-pyrroline-5-carboxylate dehydrogenase, proline binds in the active site. It is concluded that L-proline is an effective cryoprotectant for protein crystallography. | ||
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| - | Proline: Mother Nature's cryoprotectant applied to protein crystallography.,Pemberton TA, Still BR, Christensen EM, Singh H, Srivastava D, Tanner JJ Acta Crystallogr D Biol Crystallogr. 2012 Aug;68(Pt 8):1010-8. Epub 2012 Jul 17. PMID:22868767<ref>PMID:22868767</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 4e3w" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
*[[Acid phosphatase 3D structures|Acid phosphatase 3D structures]] | *[[Acid phosphatase 3D structures|Acid phosphatase 3D structures]] | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Crystal Structure Francisella tularensis histidine acid phosphatase cryoprotected with proline
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