View source for 1ilu

==X-RAY CRYSTAL STRUCTURE THE TWO SITE-SPECIFIC MUTANTS ILE7SER AND PHE110SER OF AZURIN FROM PSEUDOMONAS AERUGINOSA==
<StructureSection load='1ilu' size='340' side='right' caption='[[1ilu]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1ilu]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_aeruginosus"_(schroeter_1872)_trevisan_1885 "bacillus aeruginosus" (schroeter 1872) trevisan 1885]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ILU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ILU FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ilu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ilu OCA], [http://pdbe.org/1ilu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ilu RCSB], [http://www.ebi.ac.uk/pdbsum/1ilu PDBsum]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/AZUR_PSEAE AZUR_PSEAE]] Transfers electrons from cytochrome c551 to cytochrome oxidase. 
== 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/il/1ilu_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=1ilu ConSurf].
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== Publication Abstract from PubMed ==
The blue copper protein azurin from Pseudomonas aeruginosa contains a single Trp residue that is believed to be involved in the inducible intramolecular electron transfer from a disulphide group to the copper centre. This residue shows in fluorescence spectra the highest energy emission of tryptophan-containing compounds at room temperature, which is explained by its rigid and highly hydrophobic environment. In order to investigate the role of the Trp residue in electron transfer and the influence of its environment, two mutations (17S and F110S) were introduced that were thought to increase the polarity and the mobility in its environment. The crystal structures of these mutants were solved at 2.2 A and 2.3 A resolution, respectively. These provide a structural basis for the changes observed in fluorescence spectra compared with the wild-type protein. We conclude from our results that these changes are not caused by a change in the dynamics of the Trp residue itself, but exclusively by an increased effective dielectric constant of the microenvironment of Trp48 and by changes in mobility of the mutated residues.

X-ray crystal structure of the two site-specific mutants Ile7Ser and Phe110Ser of azurin from Pseudomonas aeruginosa.,Hammann C, Messerschmidt A, Huber R, Nar H, Gilardi G, Canters GW J Mol Biol. 1996 Jan 26;255(3):362-6. PMID:8568881<ref>PMID:8568881</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1ilu" style="background-color:#fffaf0;"></div>

==See Also==
*[[Azurin|Azurin]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Hammann, C]]
[[Category: Huber, R]]
[[Category: Messerschmidt, A]]
[[Category: Nar, H]]
[[Category: Electron transfer protein]]
[[Category: Metalloprotein]]