1lpi

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[[Image:1lpi.gif|left|200px]]
[[Image:1lpi.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1lpi |SIZE=350|CAPTION= <scene name='initialview01'>1lpi</scene>, resolution 2.00&Aring;
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The line below this paragraph, containing "STRUCTURE_1lpi", creates the "Structure Box" on the page.
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|SITE= <scene name='pdbsite=PON:Binding+Site+Of+A+Na+Cation+Stabilized+By+Pi-Cation+Inte+...'>PON</scene>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE=
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|DOMAIN=
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{{STRUCTURE_1lpi| PDB=1lpi | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1lpi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lpi OCA], [http://www.ebi.ac.uk/pdbsum/1lpi PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1lpi RCSB]</span>
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}}
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'''HEW LYSOZYME: TRP...NA CATION-PI INTERACTION'''
'''HEW LYSOZYME: TRP...NA CATION-PI INTERACTION'''
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[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Wouters, J.]]
[[Category: Wouters, J.]]
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[[Category: glycosidase]]
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[[Category: Glycosidase]]
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[[Category: hydrolase]]
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[[Category: Hydrolase]]
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[[Category: o-glycosyl]]
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[[Category: O-glycosyl]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:09:01 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:05:43 2008''
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Revision as of 21:09, 2 May 2008

Image:1lpi.gif

Template:STRUCTURE 1lpi

HEW LYSOZYME: TRP...NA CATION-PI INTERACTION


Overview

Experimental evidence of a cation-pi interaction between a sodium cation (Na+) and the indole ring of residue Trp123 in a structure (2.0 A) of hen egg-white lysozyme is presented. The geometry of the metal ion-pi interaction observed in the protein structure (distance between the aromatic plane and the cation approximately 4 A) is consistent with geometries observed among small molecules crystal structures and quantum chemistry ab initio calculations. The present crystal structure of lysozyme provides unique structural information about the geometry of binding of cations to pi systems in proteins. It shows that the metal ion-pi interaction within proteins is not significantly different from similar bindings found in small molecules and that it can be modeled by theoretical methods.

About this Structure

1LPI is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.

Reference

Cation-pi (Na+-Trp) interactions in the crystal structure of tetragonal lysozyme., Wouters J, Protein Sci. 1998 Nov;7(11):2472-5. PMID:9828016 Page seeded by OCA on Sat May 3 00:09:01 2008

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