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== | ==1.00 AA Trypsin from Atlantic Salmon== | ||
Radiation damage is an inherent problem in protein X-ray crystallography | <StructureSection load='1hj8' size='340' side='right'caption='[[1hj8]], [[Resolution|resolution]] 1.00Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1hj8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Salmo_salar Salmo salar]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HJ8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1HJ8 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEN:BENZAMIDINE'>BEN</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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=1hj8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hj8 OCA], [https://pdbe.org/1hj8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1hj8 RCSB], [https://www.ebi.ac.uk/pdbsum/1hj8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1hj8 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TRY1_SALSA TRY1_SALSA] | |||
== 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/hj/1hj8_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/main_output.php?pdb_ID=1hj8 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Radiation damage is an inherent problem in protein X-ray crystallography and the process has recently been shown to be highly specific, exhibiting features such as cleavage of disulfide bonds, decarboxylation of acidic residues, increase in atomic B factors and increase in unit-cell volume. Reported here are two trypsin structures at atomic resolution (1.00 and 0.95 A), the data for which were collected at a third-generation synchrotron (ESRF) at two different beamlines. Both trypsin structures exhibit broken disulfide bonds; in particular, the bond from Cys191 to Cys220 is very sensitive to synchrotron radiation. The data set collected at the most intense beamline (ID14-EH4) shows increased structural radiation damage in terms of lower occupancies for cysteine residues, more breakage in the six disulfide bonds and more alternate conformations. It appears that high intensity and not only the total X-ray dose is most harmful to protein crystals. | |||
Atomic resolution structures of trypsin provide insight into structural radiation damage.,Leiros HK, McSweeney SM, Smalas AO Acta Crystallogr D Biol Crystallogr. 2001 Apr;57(Pt 4):488-97. PMID:11264577<ref>PMID:11264577</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
<div class="pdbe-citations 1hj8" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Trypsin 3D structures|Trypsin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Salmo salar]] | [[Category: Salmo salar]] | ||
[[Category: Leiros H-KS]] | |||
[[Category: Mcsweeney SM]] | |||
[[Category: Leiros | [[Category: Smalas AO]] | ||
[[Category: Mcsweeney | |||
[[Category: Smalas | |||
Latest revision as of 15:26, 13 December 2023
1.00 AA Trypsin from Atlantic Salmon1.00 AA Trypsin from Atlantic Salmon
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedRadiation damage is an inherent problem in protein X-ray crystallography and the process has recently been shown to be highly specific, exhibiting features such as cleavage of disulfide bonds, decarboxylation of acidic residues, increase in atomic B factors and increase in unit-cell volume. Reported here are two trypsin structures at atomic resolution (1.00 and 0.95 A), the data for which were collected at a third-generation synchrotron (ESRF) at two different beamlines. Both trypsin structures exhibit broken disulfide bonds; in particular, the bond from Cys191 to Cys220 is very sensitive to synchrotron radiation. The data set collected at the most intense beamline (ID14-EH4) shows increased structural radiation damage in terms of lower occupancies for cysteine residues, more breakage in the six disulfide bonds and more alternate conformations. It appears that high intensity and not only the total X-ray dose is most harmful to protein crystals. Atomic resolution structures of trypsin provide insight into structural radiation damage.,Leiros HK, McSweeney SM, Smalas AO Acta Crystallogr D Biol Crystallogr. 2001 Apr;57(Pt 4):488-97. PMID:11264577[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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