2icq: Difference between revisions
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==urate oxidase under 2.0 MPa pressure of nitrous oxide== | ==urate oxidase under 2.0 MPa pressure of nitrous oxide== | ||
<StructureSection load='2icq' size='340' side='right' caption='[[2icq]], [[Resolution|resolution]] 1.75Å' scene=''> | <StructureSection load='2icq' size='340' side='right'caption='[[2icq]], [[Resolution|resolution]] 1.75Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2icq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspfl Aspfl]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ICQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ICQ FirstGlance]. <br> | <table><tr><td colspan='2'>[[2icq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspfl Aspfl]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ICQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ICQ FirstGlance]. <br> | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ic/2icq_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ic/2icq_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 2icq" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 2icq" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Urate Oxidase|Urate Oxidase]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Aspfl]] | [[Category: Aspfl]] | ||
[[Category: Factor independent urate hydroxylase]] | [[Category: Factor independent urate hydroxylase]] | ||
[[Category: Large Structures]] | |||
[[Category: Abraini, J H]] | [[Category: Abraini, J H]] | ||
[[Category: Prange, T]] | [[Category: Prange, T]] | ||
Revision as of 12:18, 24 July 2019
urate oxidase under 2.0 MPa pressure of nitrous oxideurate oxidase under 2.0 MPa pressure of nitrous oxide
Structural highlights
Function[URIC_ASPFL] Catalyzes the oxidation of uric acid to 5-hydroxyisourate, which is further processed to form (S)-allantoin. 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 PubMedIn contrast with most inhalational anesthetics, the anesthetic gases xenon (Xe) and nitrous oxide (N(2)O) act by blocking the N-methyl-d-aspartate (NMDA) receptor. Using x-ray crystallography, we examined the binding characteristics of these two gases on two soluble proteins as structural models: urate oxidase, which is a prototype of a variety of intracellular globular proteins, and annexin V, which has structural and functional characteristics that allow it to be considered as a prototype for the NMDA receptor. The structure of these proteins complexed with Xe and N(2)O were determined. One N(2)O molecule or one Xe atom binds to the same main site in both proteins. A second subsite is observed for N(2)O in each case. The gas-binding sites are always hydrophobic flexible cavities buried within the monomer. Comparison of the effects of Xe and N(2)O on urate oxidase and annexin V reveals an interesting relationship with the in vivo pharmacological effects of these gases, the ratio of the gas-binding sites' volume expansion and the ratio of the narcotic potency being similar. Given these data, we propose that alterations of cytosolic globular protein functions by general anesthetics would be responsible for the early stages of anesthesia such as amnesia and hypnosis and that additional alterations of ion-channel membrane receptor functions are required for deeper effects that progress to "surgical" anesthesia. Protein crystallography under xenon and nitrous oxide pressure: comparison with in vivo pharmacology studies and implications for the mechanism of inhaled anesthetic action.,Colloc'h N, Sopkova-de Oliveira Santos J, Retailleau P, Vivares D, Bonnete F, Langlois d'Estainto B, Gallois B, Brisson A, Risso JJ, Lemaire M, Prange T, Abraini JH Biophys J. 2007 Jan 1;92(1):217-24. Epub 2006 Oct 6. PMID:17028130[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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