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2wy4

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Current revision

Structure of bacterial globin from Campylobacter jejuni at 1.35 A resolution

Structural highlights

2wy4 is a 1 chain structure with sequence from Campylobacter jejuni. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.35Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q0P842_CAMJE

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 PubMed

The food-borne pathogen Campylobacter jejuni possesses a single-domain globin (Cgb) whose role in detoxifying nitric oxide has been unequivocally demonstrated through genetic and molecular approaches. The x-ray structure of cyanide-bound Cgb has been solved to a resolution of 1.35 A. The overall fold is a classic three-on-three alpha-helical globin fold, similar to that of myoglobin and Vgb from Vitreoscilla stercoraria. However, the D region (defined according to the standard globin fold nomenclature) of Cgb adopts a highly ordered alpha-helical conformation unlike any previously characterized members of this globin family, and the GlnE7 residue has an unexpected role in modulating the interaction between the ligand and the TyrB10 residue. The proximal hydrogen bonding network in Cgb demonstrates that the heme cofactor is ligated by an imidazolate, a characteristic of peroxidase-like proteins. Mutation of either proximal hydrogen-bonding residue (GluH23 or TyrG5) results in the loss of the high frequency nu(Fe-His) stretching mode (251 cm(-1)), indicating that both residues are important for maintaining the anionic character of the proximal histidine ligand. Cyanide binding kinetics for these proximal mutants demonstrate for the first time that proximal hydrogen bonding in globins can modulate ligand binding kinetics at the distal site. A low redox midpoint for the ferrous/ferric couple (-134 mV versus normal hydrogen electrode at pH 7) is consistent with the peroxidase-like character of the Cgb active site. These data provide a new insight into the mechanism via which Campylobacter may survive host-derived nitrosative stress.

The single-domain globin from the pathogenic bacterium Campylobacter jejuni: novel D-helix conformation, proximal hydrogen bonding that influences ligand binding, and peroxidase-like redox properties.,Shepherd M, Barynin V, Lu C, Bernhardt PV, Wu G, Yeh SR, Egawa T, Sedelnikova SE, Rice DW, Wilson JL, Poole RK J Biol Chem. 2010 Apr 23;285(17):12747-54. Epub 2010 Feb 17. PMID:20164176^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Shepherd M, Barynin V, Lu C, Bernhardt PV, Wu G, Yeh SR, Egawa T, Sedelnikova SE, Rice DW, Wilson JL, Poole RK. The single-domain globin from the pathogenic bacterium Campylobacter jejuni: novel D-helix conformation, proximal hydrogen bonding that influences ligand binding, and peroxidase-like redox properties. J Biol Chem. 2010 Apr 23;285(17):12747-54. Epub 2010 Feb 17. PMID:20164176 doi:10.1074/jbc.M109.084509

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2wy4"

@@ Line 1: / Line 1: @@
 ==Structure of bacterial globin from Campylobacter jejuni at 1.35 A resolution==
-<StructureSection load='2wy4' size='340' side='right' caption='[[2wy4]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
+<StructureSection load='2wy4' size='340' side='right'caption='[[2wy4]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2wy4]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"campylobacter_fetus_subsp._jejuni"_smibert_1974 "campylobacter fetus subsp. jejuni" smibert 1974]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WY4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2WY4 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2wy4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Campylobacter_jejuni Campylobacter jejuni]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WY4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WY4 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CYN:CYANIDE+ION'>CYN</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.35&#8491;</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=2wy4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wy4 OCA], [http://pdbe.org/2wy4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2wy4 RCSB], [http://www.ebi.ac.uk/pdbsum/2wy4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2wy4 ProSAT]</span></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CYN:CYANIDE+ION'>CYN</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</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=2wy4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wy4 OCA], [https://pdbe.org/2wy4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wy4 RCSB], [https://www.ebi.ac.uk/pdbsum/2wy4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wy4 ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/Q0P842_CAMJE Q0P842_CAMJE]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Campylobacter fetus subsp. jejuni smibert 1974]]
+[[Category: Campylobacter jejuni]]
-[[Category: Barynin, V V]]
+[[Category: Large Structures]]
-[[Category: Poole, R K]]
+[[Category: Barynin VV]]
-[[Category: Rice, D W]]
+[[Category: Poole RK]]
-[[Category: Sedelnikova, S E]]
+[[Category: Rice DW]]
-[[Category: Shepherd, M]]
+[[Category: Sedelnikova SE]]
-[[Category: Wu, G]]
+[[Category: Shepherd M]]
-[[Category: Heme]]
+[[Category: Wu G]]
-[[Category: Oxygen transport]]
-[[Category: Transport]]

2wy4

From Proteopedia

Current revision

Structure of bacterial globin from Campylobacter jejuni at 1.35 A resolution

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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