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8aio
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[8aio]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_pasteurianum Clostridium pasteurianum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8AIO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8AIO FirstGlance]. <br> | <table><tr><td colspan='2'>[[8aio]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_pasteurianum Clostridium pasteurianum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8AIO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8AIO FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MHX:1,1,7-tris(hydroxymethyl)-8-oxidanylidene-2$l^{3},6$l^{3}-dithia-4-aza-1$l^{6},7$l^{5}-diferratricyclo[4.2.0.0^{2,7}]octane-1,7-dicarbonitrile'>MHX</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</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]] 1.52Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MHX:1,1,7-tris(hydroxymethyl)-8-oxidanylidene-2$l^{3},6$l^{3}-dithia-4-aza-1$l^{6},7$l^{5}-diferratricyclo[4.2.0.0^{2,7}]octane-1,7-dicarbonitrile'>MHX</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</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=8aio FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8aio OCA], [https://pdbe.org/8aio PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8aio RCSB], [https://www.ebi.ac.uk/pdbsum/8aio PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8aio ProSAT]</span></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=8aio FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8aio OCA], [https://pdbe.org/8aio PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8aio RCSB], [https://www.ebi.ac.uk/pdbsum/8aio PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8aio ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/PHF1_CLOPA PHF1_CLOPA] | [https://www.uniprot.org/uniprot/PHF1_CLOPA PHF1_CLOPA] | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Hydrogenases are H2 converting enzymes that harbor catalytic cofactors in which iron (Fe) ions are coordinated by biologically unusual carbon monoxide (CO) and cyanide (CN-) ligands. Extrinsic CO and CN-, however, inhibit hydrogenases. The mechanism by which CN- binds to [FeFe]-hydrogenases is not known. Here, we obtained crystal structures of the CN--treated [FeFe]-hydrogenase CpI from Clostridium pasteurianum. The high resolution of 1.39 A allowed us to distinguish intrinsic CN- and CO ligands and to show that extrinsic CN- binds to the open coordination site of the cofactor where CO is known to bind. In contrast to other inhibitors, CN- treated crystals show conformational changes of conserved residues within the proton transfer pathway which could allow a direct proton transfer between E279 and S319. This configuration has been proposed to be vital for efficient proton transfer, but has never been observed structurally. | ||
| - | |||
| - | Cyanide Binding to [FeFe]-Hydrogenase Stabilizes the Alternative Configuration of the Proton Transfer Pathway.,Duan J, Hemschemeier A, Burr DJ, Stripp ST, Hofmann E, Happe T Angew Chem Int Ed Engl. 2022 Dec 4. doi: 10.1002/anie.202216903. PMID:36464641<ref>PMID:36464641</ref> | ||
| - | |||
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 8aio" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
CO-bound [FeFe]-hydrogenase I from Clostridium pasteurianum (CpI)
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