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<StructureSection load='1st3' size='340' side='right'caption='[[1st3]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
<StructureSection load='1st3' size='340' side='right'caption='[[1st3]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1st3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_10840 Atcc 10840]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ST3 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1st3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Lederbergia_lenta Lederbergia lenta]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ST3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ST3 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</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]] 1.4&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Subtilisin Subtilisin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.62 3.4.21.62] </span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></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=1st3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1st3 OCA], [http://pdbe.org/1st3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1st3 RCSB], [http://www.ebi.ac.uk/pdbsum/1st3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1st3 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=1st3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1st3 OCA], [https://pdbe.org/1st3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1st3 RCSB], [https://www.ebi.ac.uk/pdbsum/1st3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1st3 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/SUBB_BACLE SUBB_BACLE]] Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides.  
[https://www.uniprot.org/uniprot/SUBB_LEDLE SUBB_LEDLE] Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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/main_output.php?pdb_ID=1st3 ConSurf].
</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/main_output.php?pdb_ID=1st3 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The crystal structure of subtilisin BL, an alkaline protease from Bacillus lentus with activity at pH 11, has been determined to 1.4 A resolution. The structure was solved by molecular replacement starting with the 2.1 A structure of subtilisin BPN' followed by molecular dynamics refinement using X-PLOR. A final crystallographic R-factor of 19% overall was obtained. The enzyme possesses stability at high pH, which is a result of the high pI of the protein. Almost all of the acidic side-chains are involved in some type of electrostatic interaction (ion pairs, calcium binding, etc.). Furthermore, three of seven tyrosine residues have potential partners for forming salt bridges. All of the potential partners are arginine with a pK around 12. Lysine would not function well in a salt bridge with tyrosine as it deprotonates at around the same pH as tyrosine ionizes. Stability at high pH is acquired in part from the pI of the protein, but also from the formation of salt bridges (which would affect the pI). The overall structure of the enzyme is very similar to other subtilisins and shows that the subtilisin fold is more highly conserved than would be expected from the differences in amino acid sequence. The amino acid side-chains in the hydrophobic core are not conserved, though the inter-residue interactions are. Finally, one third of the serine side-chains in the protein have multiple conformations. This presents an opportunity to correlate computer simulations with observed occupancies in the crystal structure.
The crystal structure of the Bacillus lentus alkaline protease, subtilisin BL, at 1.4 A resolution.,Goddette DW, Paech C, Yang SS, Mielenz JR, Bystroff C, Wilke ME, Fletterick RJ J Mol Biol. 1992 Nov 20;228(2):580-95. PMID:1453465<ref>PMID:1453465</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1st3" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Subtilisin|Subtilisin]]
*[[Subtilisin 3D structures|Subtilisin 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Atcc 10840]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Subtilisin]]
[[Category: Lederbergia lenta]]
[[Category: Goddette, D W]]
[[Category: Goddette DW]]
[[Category: Serine protease]]

Latest revision as of 11:33, 14 February 2024

THE CRYSTAL STRUCTURE OF THE BACILLUS LENTUS ALKALINE PROTEASE, SUBTILISIN BL, AT 1.4 ANGSTROMS RESOLUTIONTHE CRYSTAL STRUCTURE OF THE BACILLUS LENTUS ALKALINE PROTEASE, SUBTILISIN BL, AT 1.4 ANGSTROMS RESOLUTION

Structural highlights

1st3 is a 1 chain structure with sequence from Lederbergia lenta. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.4Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SUBB_LEDLE Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1st3, resolution 1.40Å

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