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[[Image: | ==Crystal structure of pullulanase type I from Bacillus subtilis str. 168 complexed with maltose== | ||
<StructureSection load='2e9b' size='340' side='right' caption='[[2e9b]], [[Resolution|resolution]] 2.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2e9b]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E9B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E9B FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2e8y|2e8y]], [[2e8z|2e8z]]</td></tr> | |||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">amyX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 Bacillus subtilis])</td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pullulanase Pullulanase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.41 3.2.1.41] </span></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e9b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e9b OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2e9b RCSB], [http://www.ebi.ac.uk/pdbsum/2e9b PDBsum]</span></td></tr> | |||
<table> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e9/2e9b_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The AmyX gene encoding pullulanase from the common spore-forming bacterium Bacillus subtilis strain 168 was cloned, overexpressed in Escherichia coli, purified and crystallized. The recombinant pullulanase was purified to homogeneity using ammonium sulfate precipitation, hydrophobic chromatography and anion-exchange chromatography, resulting in a specific activity of 24.10 U per milligram of protein. SDS-PAGE analysis showed that the molecular weight of the protein is approximately 81.0 kDa, which is similar to the calculated molecular weight, 81.1 kDa, from its translated cDNA sequence. The k(cat) and K(m) of the purified enzyme with pullulan as substrate were approximately 79 s(-1) and 1.284 mg ml(-1), respectively. X-ray crystallographic analysis of the pullulanase crystal showed that the crystal belongs to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 70.568, b = 127.68, c = 189.25 angstroms. The crystal contains two molecules of pullulanase in the asymmetric unit, with a solvent content of 53.15%. The crystal diffracted to 2.1 angstroms resolution at a synchrotron and is suitable for structure determination. | |||
Overexpression, purification and preliminary X-ray analysis of pullulanase from Bacillus subtilis strain 168.,Malle D, Itoh T, Hashimoto W, Murata K, Utsumi S, Mikami B Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Apr 1;62(Pt, 4):381-4. Epub 2006 Mar 25. PMID:16582490<ref>PMID:16582490</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[ | *[[Amylase|Amylase]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Bacillus subtilis]] | [[Category: Bacillus subtilis]] | ||
[[Category: Pullulanase]] | [[Category: Pullulanase]] | ||
Revision as of 09:04, 29 September 2014
Crystal structure of pullulanase type I from Bacillus subtilis str. 168 complexed with maltoseCrystal structure of pullulanase type I from Bacillus subtilis str. 168 complexed with maltose
Structural highlights
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 PubMedThe AmyX gene encoding pullulanase from the common spore-forming bacterium Bacillus subtilis strain 168 was cloned, overexpressed in Escherichia coli, purified and crystallized. The recombinant pullulanase was purified to homogeneity using ammonium sulfate precipitation, hydrophobic chromatography and anion-exchange chromatography, resulting in a specific activity of 24.10 U per milligram of protein. SDS-PAGE analysis showed that the molecular weight of the protein is approximately 81.0 kDa, which is similar to the calculated molecular weight, 81.1 kDa, from its translated cDNA sequence. The k(cat) and K(m) of the purified enzyme with pullulan as substrate were approximately 79 s(-1) and 1.284 mg ml(-1), respectively. X-ray crystallographic analysis of the pullulanase crystal showed that the crystal belongs to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 70.568, b = 127.68, c = 189.25 angstroms. The crystal contains two molecules of pullulanase in the asymmetric unit, with a solvent content of 53.15%. The crystal diffracted to 2.1 angstroms resolution at a synchrotron and is suitable for structure determination. Overexpression, purification and preliminary X-ray analysis of pullulanase from Bacillus subtilis strain 168.,Malle D, Itoh T, Hashimoto W, Murata K, Utsumi S, Mikami B Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Apr 1;62(Pt, 4):381-4. Epub 2006 Mar 25. PMID:16582490[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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