1y3b

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{{Seed}}
 
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[[Image:1y3b.png|left|200px]]
 
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==Crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 E60S mutant==
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The line below this paragraph, containing "STRUCTURE_1y3b", creates the "Structure Box" on the page.
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<StructureSection load='1y3b' size='340' side='right'caption='[[1y3b]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1y3b]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_amyloliquefaciens Bacillus amyloliquefaciens] and [https://en.wikipedia.org/wiki/Hordeum_vulgare Hordeum vulgare]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y3B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Y3B FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=15P:POLYETHYLENE+GLYCOL+(N=34)'>15P</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
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{{STRUCTURE_1y3b| PDB=1y3b | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1y3b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y3b OCA], [https://pdbe.org/1y3b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1y3b RCSB], [https://www.ebi.ac.uk/pdbsum/1y3b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1y3b ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/SUBT_BACAM SUBT_BACAM] Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. Has a high substrate specificity to fibrin.<ref>PMID:12524032</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/y3/1y3b_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=1y3b ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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A series of mutants of chymotrypsin inhibitor 2 (CI2), at residues involved in intramolecular interactions that shape and constrain the binding loop, were studied to determine their relative importance for inhibition of the serine protease subtilisin BPN', and for resistance of the inhibitor to proteolysis. These functional properties were investigated in tandem with the crystal structures of the mutant inhibitor-enzyme complexes. A dense hydrogen bonding network that supports the binding loop in the vicinity of the scissile bond was found to be important both for enzyme affinity and for stability to proteolysis. Structural analysis, in combination with biochemical measurements, allows differentiation of the structural components most important for resistance to proteolysis and/or binding. The most critical participating residues in the network were found to be Thr-58, Glu-60, Arg-65, and Gly-83. Glu-60 is more important for resistance to proteolysis than for binding, while Arg-65 and two other Arg residues play a greater role in binding than in resistance to proteolysis. Structural comparisons reveal a wide variety of subtle conformational changes in response to mutation, with built-in robustness in the hydrogen bond network, such that loss of one contact is compensated by other new contacts.
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===Crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 E60S mutant===
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Role of the intramolecular hydrogen bond network in the inhibitory power of chymotrypsin inhibitor 2.,Radisky ES, Lu CJ, Kwan G, Koshland DE Jr Biochemistry. 2005 May 10;44(18):6823-30. PMID:15865427<ref>PMID:15865427</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1y3b" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_15865427}}, adds the Publication Abstract to the page
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*[[Chymotrypsin inhibitor 3D structures|Chymotrypsin inhibitor 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 15865427 is the PubMed ID number.
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*[[Subtilisin 3D structures|Subtilisin 3D structures]]
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== References ==
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{{ABSTRACT_PUBMED_15865427}}
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<references/>
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__TOC__
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==About this Structure==
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</StructureSection>
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1Y3B is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Bacillus_amyloliquefaciens Bacillus amyloliquefaciens] and [http://en.wikipedia.org/wiki/Hordeum_vulgare Hordeum vulgare]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y3B OCA].
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==Reference==
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<ref group="xtra">PMID:15865427</ref><references group="xtra"/>
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[[Category: Bacillus amyloliquefaciens]]
[[Category: Bacillus amyloliquefaciens]]
[[Category: Hordeum vulgare]]
[[Category: Hordeum vulgare]]
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[[Category: Subtilisin]]
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[[Category: Large Structures]]
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[[Category: Jr., D E.Koshland.]]
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[[Category: Koshland Jr DE]]
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[[Category: Kwan, G.]]
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[[Category: Kwan G]]
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[[Category: Lu, C J.]]
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[[Category: Lu CJ]]
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[[Category: Radisky, E S.]]
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[[Category: Radisky ES]]
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[[Category: Inhibitor]]
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[[Category: Serine protease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 17:38:16 2009''
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Current revision

Crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 E60S mutant

PDB ID 1y3b

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