3ir5

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3ir5]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_k-12 Escherichia coli k-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IR5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3IR5 FirstGlance]. <br>
<table><tr><td colspan='2'>[[3ir5]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_k-12 Escherichia coli k-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IR5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3IR5 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=6MO:MOLYBDENUM(VI)+ION'>6MO</scene>, <scene name='pdbligand=AGA:(1S)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PENTANOYLOXY)METHYL]ETHYL+OCTANOATE'>AGA</scene>, <scene name='pdbligand=F3S:FE3-S4+CLUSTER'>F3S</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MD1:PHOSPHORIC+ACID+4-(2-AMINO-4-OXO-3,4,5,6,-TETRAHYDRO-PTERIDIN-6-YL)-2-HYDROXY-3,4-DIMERCAPTO-BUT-3-EN-YL+ESTER+GUANYLATE+ESTER'>MD1</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene><br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=6MO:MOLYBDENUM(VI)+ION'>6MO</scene>, <scene name='pdbligand=AGA:(1S)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PENTANOYLOXY)METHYL]ETHYL+OCTANOATE'>AGA</scene>, <scene name='pdbligand=F3S:FE3-S4+CLUSTER'>F3S</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MD1:PHOSPHORIC+ACID+4-(2-AMINO-4-OXO-3,4,5,6,-TETRAHYDRO-PTERIDIN-6-YL)-2-HYDROXY-3,4-DIMERCAPTO-BUT-3-EN-YL+ESTER+GUANYLATE+ESTER'>MD1</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=FME:N-FORMYLMETHIONINE'>FME</scene></td></tr>
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<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=FME:N-FORMYLMETHIONINE'>FME</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1q16|1q16]], [[3ir6|3ir6]], [[3ir7|3ir7]]</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1q16|1q16]], [[3ir6|3ir6]], [[3ir7|3ir7]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">narG, bisD, narC, b1224, JW1215 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), narH, b1225, JW1216 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), narI, chlI, b1227, JW1218 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12])</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">narG, bisD, narC, b1224, JW1215 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), narH, b1225, JW1216 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), narI, chlI, b1227, JW1218 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Nitrate_reductase Nitrate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.7.99.4 1.7.99.4] </span></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Nitrate_reductase Nitrate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.7.99.4 1.7.99.4] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ir5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ir5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ir5 RCSB], [http://www.ebi.ac.uk/pdbsum/3ir5 PDBsum]</span></td></tr>
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<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=3ir5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ir5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ir5 RCSB], [http://www.ebi.ac.uk/pdbsum/3ir5 PDBsum]</span></td></tr>
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<table>
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</table>
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== Function ==
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[[http://www.uniprot.org/uniprot/NARG_ECOLI NARG_ECOLI]] The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The alpha chain is the actual site of nitrate reduction. [[http://www.uniprot.org/uniprot/NARI_ECOLI NARI_ECOLI]] The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The gamma chain is a membrane-embedded heme-iron unit resembling cytochrome b, which transfers electrons from quinones to the beta subunit. [[http://www.uniprot.org/uniprot/NARH_ECOLI NARH_ECOLI]] The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The beta chain is an electron transfer unit containing four cysteine clusters involved in the formation of iron-sulfur centers. Electrons are transferred from the gamma chain to the molybdenum cofactor of the alpha subunit.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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[[Category: Escherichia coli k-12]]
[[Category: Escherichia coli k-12]]
[[Category: Nitrate reductase]]
[[Category: Nitrate reductase]]
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[[Category: Bertero, M G.]]
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[[Category: Bertero, M G]]
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[[Category: Rothery, R A.]]
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[[Category: Rothery, R A]]
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[[Category: Strynadka, N C.J.]]
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[[Category: Strynadka, N C.J]]
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[[Category: Weiner, J H.]]
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[[Category: Weiner, J H]]
[[Category: Cell inner membrane]]
[[Category: Cell inner membrane]]
[[Category: Cell membrane]]
[[Category: Cell membrane]]
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[[Category: Molybdenum]]
[[Category: Molybdenum]]
[[Category: Nitrate assimilation]]
[[Category: Nitrate assimilation]]
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[[Category: Nitrate reductase]]
 
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
[[Category: Transmembrane]]
[[Category: Transmembrane]]
[[Category: Transport]]
[[Category: Transport]]

Revision as of 05:28, 25 December 2014

Crystal structure of NarGHI mutant NarG-H49C

3ir5, resolution 2.30Å

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