View source for 1kbv


==NITRITE-SOAKED CRYSTAL STRUCTURE OF THE SOLUBLE DOMAIN OF ANIA FROM NEISSERIA GONORRHOEAE==
<StructureSection load='1kbv' size='340' side='right'caption='[[1kbv]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1kbv]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Neisseria_gonorrhoeae Neisseria gonorrhoeae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KBV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KBV 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]] 1.95&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=NO2:NITRITE+ION'>NO2</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=1kbv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kbv OCA], [https://pdbe.org/1kbv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kbv RCSB], [https://www.ebi.ac.uk/pdbsum/1kbv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kbv ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ANIA_NEIGO ANIA_NEIGO] Catalyzes the reduction of nitrite to nitric oxide (NO), probably with azurin as electron donor. Essential for growth and survival in oxygen-depleted environments. Can also provide protection against killing by normal human sera.<ref>PMID:9413436</ref> 
== 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/kb/1kbv_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=1kbv ConSurf].
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== Publication Abstract from PubMed ==
The major anaerobically induced outer membrane protein (AniA) from pathogenic Neisseria gonorrhoeae is essential for cell growth under oxygen limiting conditions in the presence of nitrite and is protective against killing by human sera. A phylogenic analysis indicates that AniA is a member of a new class of copper-containing nitrite reductases. Expression of the soluble domain of AniA yields a protein capable of reducing nitrite with specific activity of 160 units/mg, approximately 50 % of that measured for the nitrite reductase from the strong soil denitrifier Alcaligenes faecalis S-6. The crystal structure of the soluble domain of AniA was solved by molecular replacement and sixfold averaging to a resolution of 2.4 A. The nitrite soaked AniA crystal structure refined to 1.95 A reveals a bidentate mode of substrate binding to the type II copper. Despite low sequence identity (approximately 30 %), the core cupredoxin fold of AniA is similar to that found in copper-containing nitrite reductases from soil bacteria. The main structural differences are localized to two attenuated surface loops that map to deletions in the sequence alignment. In soil nitrite reductases, one of these surface loops is positioned near the type I copper site and contributes residues to the docking surface for proteaceous electron donors. In AniA, the attenuation of this loop results in a restructured hydrophobic binding surface that may be required to interact with a lipid anchored azurin. The second attenuated loop is positioned on the opposite side of AniA and may facilitate a more intimate interaction with the lipid membrane. A unique combination of structural effectors surrounding the type I copper site of sAnia contribute to a unusual visible absorption spectra with components observed previously in either green or blue type I copper sites.

Crystal structure of the soluble domain of the major anaerobically induced outer membrane protein (AniA) from pathogenic Neisseria: a new class of copper-containing nitrite reductases.,Boulanger MJ, Murphy ME J Mol Biol. 2002 Feb 1;315(5):1111-27. PMID:11827480<ref>PMID:11827480</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Neisseria gonorrhoeae]]
[[Category: Boulanger MJ]]
[[Category: Murphy MEP]]