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1h1l

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[[Image:1h1l.jpg|left|200px]]
 
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{{Structure
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==NITROGENASE MO-FE PROTEIN FROM KLEBSIELLA PNEUMONIAE, NIFV MUTANT==
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|PDB= 1h1l |SIZE=350|CAPTION= <scene name='initialview01'>1h1l</scene>, resolution 1.90&Aring;
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<StructureSection load='1h1l' size='340' side='right'caption='[[1h1l]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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|SITE= <scene name='pdbsite=CT1:Clf+Binding+Site+For+Chain+D'>CT1</scene>
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CFM:FE-MO-S+CLUSTER'>CFM</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CLF:FE(8)-S(7)+CLUSTER'>CLF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>
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<table><tr><td colspan='2'>[[1h1l]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Klebsiella_pneumoniae Klebsiella pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H1L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1H1L FirstGlance]. <br>
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Nitrogenase Nitrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.18.6.1 1.18.6.1] </span>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CFM:FE-MO-S+CLUSTER'>CFM</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CLF:FE(8)-S(7)+CLUSTER'>CLF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1h1l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h1l OCA], [https://pdbe.org/1h1l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1h1l RCSB], [https://www.ebi.ac.uk/pdbsum/1h1l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1h1l ProSAT]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1h1l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h1l OCA], [http://www.ebi.ac.uk/pdbsum/1h1l PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1h1l RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/NIFD_KLEPN NIFD_KLEPN] This molybdenum-iron protein is part of the nitrogenase complex that catalyzes the key enzymatic reactions in nitrogen fixation.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h1/1h1l_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1h1l ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The x-ray crystal structure of NifV(-) Klebsiella pneumoniae nitrogenase MoFe protein (NifV(-) Kp1) has been determined and refined to a resolution of 1.9 A. This is the first structure for a nitrogenase MoFe protein with an altered cofactor. Moreover, it is the first direct evidence that the organic acid citrate is not just present, but replaces homocitrate as a ligand to the molybdenum atom of the iron molybdenum cofactor (FeMoco). Subsequent refinement of the structure revealed that the citrate was present at reduced occupancy.
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'''NITROGENASE MO-FE PROTEIN FROM KLEBSIELLA PNEUMONIAE, NIFV MUTANT'''
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Crystallographic analysis of the MoFe protein of nitrogenase from a nifV mutant of Klebsiella pneumoniae identifies citrate as a ligand to the molybdenum of iron molybdenum cofactor (FeMoco).,Mayer SM, Gormal CA, Smith BE, Lawson DM J Biol Chem. 2002 Sep 20;277(38):35263-6. Epub 2002 Jul 19. PMID:12133839<ref>PMID:12133839</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1h1l" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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The x-ray crystal structure of NifV(-) Klebsiella pneumoniae nitrogenase MoFe protein (NifV(-) Kp1) has been determined and refined to a resolution of 1.9 A. This is the first structure for a nitrogenase MoFe protein with an altered cofactor. Moreover, it is the first direct evidence that the organic acid citrate is not just present, but replaces homocitrate as a ligand to the molybdenum atom of the iron molybdenum cofactor (FeMoco). Subsequent refinement of the structure revealed that the citrate was present at reduced occupancy.
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*[[Nitrogenase 3D structures|Nitrogenase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1H1L is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Klebsiella_pneumoniae Klebsiella pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H1L OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Crystallographic analysis of the MoFe protein of nitrogenase from a nifV mutant of Klebsiella pneumoniae identifies citrate as a ligand to the molybdenum of iron molybdenum cofactor (FeMoco)., Mayer SM, Gormal CA, Smith BE, Lawson DM, J Biol Chem. 2002 Sep 20;277(38):35263-6. Epub 2002 Jul 19. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12133839 12133839]
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[[Category: Klebsiella pneumoniae]]
[[Category: Klebsiella pneumoniae]]
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[[Category: Nitrogenase]]
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[[Category: Large Structures]]
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[[Category: Protein complex]]
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[[Category: Gormal CA]]
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[[Category: Gormal, C A.]]
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[[Category: Lawson DM]]
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[[Category: Lawson, D M.]]
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[[Category: Mayer SM]]
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[[Category: Mayer, S M.]]
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[[Category: Smith BE]]
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[[Category: Smith, B E.]]
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[[Category: biological nitrogen fixation]]
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[[Category: electron transfer]]
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[[Category: molybdoenzyme]]
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[[Category: nitrogen metabolism]]
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[[Category: oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:55:49 2008''
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Current revision

NITROGENASE MO-FE PROTEIN FROM KLEBSIELLA PNEUMONIAE, NIFV MUTANT

PDB ID 1h1l

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