3eee: Difference between revisions
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==Probing the function of heme distortion in the H-NOX family== | ==Probing the function of heme distortion in the H-NOX family== | ||
<StructureSection load='3eee' size='340' side='right' caption='[[3eee]], [[Resolution|resolution]] 2.12Å' scene=''> | <StructureSection load='3eee' size='340' side='right'caption='[[3eee]], [[Resolution|resolution]] 2.12Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3eee]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3eee]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/As_1.2430 As 1.2430]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3EEE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3EEE FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | </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=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1u55|1u55]], [[1u56|1u56]], [[1u4h|1u4h]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1u55|1u55]], [[1u56|1u56]], [[1u4h|1u4h]]</div></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Tar4 ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Tar4 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=119072 AS 1.2430])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3eee FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3eee OCA], [https://pdbe.org/3eee PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3eee RCSB], [https://www.ebi.ac.uk/pdbsum/3eee PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3eee ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
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==See Also== | ==See Also== | ||
*[[Chemotaxis protein|Chemotaxis protein]] | *[[Chemotaxis protein 3D structures|Chemotaxis protein 3D structures]] | ||
*[[Methyl-accepting chemotaxis protein|Methyl-accepting chemotaxis protein]] | *[[Methyl-accepting chemotaxis protein|Methyl-accepting chemotaxis protein]] | ||
== References == | == References == | ||
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</StructureSection> | </StructureSection> | ||
[[Category: As 1 2430]] | [[Category: As 1 2430]] | ||
[[Category: Large Structures]] | |||
[[Category: Boon, E M]] | [[Category: Boon, E M]] | ||
[[Category: Jr, C Olea]] | [[Category: Jr, C Olea]] | ||
Revision as of 22:39, 20 October 2021
Probing the function of heme distortion in the H-NOX familyProbing the function of heme distortion in the H-NOX family
Structural highlights
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 PubMedHemoproteins carry out diverse functions utilizing a wide range of chemical reactivity while employing the same heme prosthetic group. It is clear from high-resolution crystal structures and biochemical studies that protein-bound hemes are not planar and adopt diverse conformations. The crystal structure of an H-NOX domain from Thermoanaerobacter tengcongensis (Tt H-NOX) contains the most distorted heme reported to date. In this study, Tt H-NOX was engineered to adopt a flatter heme by mutating proline 115, a conserved residue in the H-NOX family, to alanine. Decreasing heme distortion in Tt H-NOX increases affinity for oxygen and decreases the reduction potential of the heme iron. Additionally, flattening the heme is associated with significant shifts in the N-terminus of the protein. These results show a clear link between the heme conformation and Tt H-NOX structure and demonstrate that heme distortion is an important determinant for maintaining biochemical properties in H-NOX proteins. Probing the function of heme distortion in the H-NOX family.,Olea C, Boon EM, Pellicena P, Kuriyan J, Marletta MA ACS Chem Biol. 2008 Nov 21;3(11):703-10. PMID:19032091[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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