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1g6x

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[[Image:1g6x.gif|left|200px]]
 
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==ULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE==
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The line below this paragraph, containing "STRUCTURE_1g6x", creates the "Structure Box" on the page.
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<StructureSection load='1g6x' size='340' side='right'caption='[[1g6x]], [[Resolution|resolution]] 0.86&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'>[[1g6x]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G6X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1G6X 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]] 0.86&#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=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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{{STRUCTURE_1g6x| PDB=1g6x | 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=1g6x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g6x OCA], [https://pdbe.org/1g6x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1g6x RCSB], [https://www.ebi.ac.uk/pdbsum/1g6x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1g6x ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/BPT1_BOVIN BPT1_BOVIN] Inhibits trypsin, kallikrein, chymotrypsin, and plasmin.
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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/g6/1g6x_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1g6x 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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The crystal structure of a mutant of bovine pancreatic trypsin inhibitor has been refined to 0.86 A resolution using low-temperature synchrotron data. The variant contains three mutations in the binding loop (Thr11Ala, Pro13Ala, Lys15Arg) and an unrelated Met52Leu substitution. Refinement with anisotropic displacement parameters and with removal of main-chain stereochemical restraints converged with R = 0.1035. The use of full-matrix refinement provided an estimate of the variances in the derived parameters. Some stereochemical parameters, such as the planarity of the peptide group and the value of the N-C(alpha)-C angle, show a wide spread, suggesting that the standard values used as restraints in protein structure refinements may not always be entirely appropriate. Comparison with the recently determined room-temperature structure of the same mutant at 1.42 A resolution confirms the previous observations and provides new details, such as a double conformation of the main chain at Leu29 and at Gly56-Gly57, a high proportion (over 20%) of residues in double conformations, correlation of disorder through lattice contacts and the positions of H atoms, including those in water molecules, and their involvement in C-H...O and N-H...pi hydrogen bonds.
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'''ULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE'''
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Ultrahigh-resolution structure of a BPTI mutant.,Addlagatta A, Krzywda S, Czapinska H, Otlewski J, Jaskolski M Acta Crystallogr D Biol Crystallogr. 2001 May;57(Pt 5):649-63. Epub 2001, Apr 24. PMID:11320305<ref>PMID:11320305</ref>
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==Overview==
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The crystal structure of a mutant of bovine pancreatic trypsin inhibitor has been refined to 0.86 A resolution using low-temperature synchrotron data. The variant contains three mutations in the binding loop (Thr11Ala, Pro13Ala, Lys15Arg) and an unrelated Met52Leu substitution. Refinement with anisotropic displacement parameters and with removal of main-chain stereochemical restraints converged with R = 0.1035. The use of full-matrix refinement provided an estimate of the variances in the derived parameters. Some stereochemical parameters, such as the planarity of the peptide group and the value of the N-C(alpha)-C angle, show a wide spread, suggesting that the standard values used as restraints in protein structure refinements may not always be entirely appropriate. Comparison with the recently determined room-temperature structure of the same mutant at 1.42 A resolution confirms the previous observations and provides new details, such as a double conformation of the main chain at Leu29 and at Gly56-Gly57, a high proportion (over 20%) of residues in double conformations, correlation of disorder through lattice contacts and the positions of H atoms, including those in water molecules, and their involvement in C-H...O and N-H...pi hydrogen bonds.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1G6X is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G6X OCA].
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</div>
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<div class="pdbe-citations 1g6x" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Ultrahigh-resolution structure of a BPTI mutant., Addlagatta A, Krzywda S, Czapinska H, Otlewski J, Jaskolski M, Acta Crystallogr D Biol Crystallogr. 2001 May;57(Pt 5):649-63. Epub 2001, Apr 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11320305 11320305]
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*[[BPTI 3D structures|BPTI 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Addlagatta, A.]]
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[[Category: Addlagatta A]]
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[[Category: Czapinska, H.]]
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[[Category: Czapinska H]]
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[[Category: Jaskolski, M.]]
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[[Category: Jaskolski M]]
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[[Category: Krzywda, S.]]
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[[Category: Krzywda S]]
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[[Category: Otlewski, J.]]
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[[Category: Otlewski J]]
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[[Category: Serine protease inhibitor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:13:00 2008''
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Current revision

ULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE

PDB ID 1g6x

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