2de8: Difference between revisions
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==Crystal structure of porcine pancreatic elastase with a unique conformation induced by Tris== | ==Crystal structure of porcine pancreatic elastase with a unique conformation induced by Tris== | ||
<StructureSection load='2de8' size='340' side='right' caption='[[2de8]], [[Resolution|resolution]] 1.50Å' scene=''> | <StructureSection load='2de8' size='340' side='right'caption='[[2de8]], [[Resolution|resolution]] 1.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2de8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DE8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DE8 FirstGlance]. <br> | <table><tr><td colspan='2'>[[2de8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DE8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DE8 FirstGlance]. <br> | ||
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==See Also== | ==See Also== | ||
*[[Elastase|Elastase]] | *[[Elastase 3D structures|Elastase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Pancreatic elastase]] | [[Category: Pancreatic elastase]] | ||
[[Category: Sus scrofa]] | [[Category: Sus scrofa]] | ||
Revision as of 10:45, 4 March 2020
Crystal structure of porcine pancreatic elastase with a unique conformation induced by TrisCrystal structure of porcine pancreatic elastase with a unique conformation induced by Tris
Structural highlights
Function[CELA1_PIG] Acts upon elastin. 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 PubMedPorcine pancreatic elastase (PPE) was crystallized under new sulfate-free conditions containing 0.3 M NaCl and 50 mM tris(hydroxymethyl)aminomethane-HCl at pH 7.0. The crystal structure determined at 1.5 angstroms resolution had a unique conformation in four regions which contained loop portions. A chloride ion was bound near the catalytic triad instead of the sulfate ion in PDB entry 1qnj, a typical PPE crystal structure. However, the chloride ion did not affect the configuration of the catalytic triad. A tris(hydroxymethyl)aminomethane (Tris) molecule was bound to the S4 and S5 subsites in place of the adjacent molecule in the 1qnj crystal and played a significant role in the structural change of the region. The distortion in this region may subsequently have induced conformational changes in the other three regions. The fact that Tris and these four regions make a diagonal line in the ac plane may have affected the crystal-packing contraction along the a and c axes in the crystal compared with the typical crystal. Tris(hydroxymethyl)aminomethane induces conformational change and crystal-packing contraction of porcine pancreatic elastase.,Kinoshita T, Yamaguchi A, Tada T Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Jul 1;62(Pt, 7):623-6. Epub 2006 Jun 26. PMID:16820677[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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