View source for 1yic


==THE OXIDIZED SACCHAROMYCES CEREVISIAE ISO-1-CYTOCHROME C, NMR, 20 STRUCTURES==
<StructureSection load='1yic' size='340' side='right'caption='[[1yic]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1yic]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YIC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YIC FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR,  models</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEC:HEME+C'>HEC</scene>, <scene name='pdbligand=M3L:N-TRIMETHYLLYSINE'>M3L</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=1yic FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yic OCA], [https://pdbe.org/1yic PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yic RCSB], [https://www.ebi.ac.uk/pdbsum/1yic PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yic ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYC1_YEAST CYC1_YEAST] Electron carrier protein. The oxidized form of the cytochrome c heme group can accept an electron from the heme group of the cytochrome c1 subunit of cytochrome reductase. Cytochrome c then transfers this electron to the cytochrome oxidase complex, the final protein carrier in the mitochondrial electron-transport chain.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/yi/1yic_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1yic ConSurf].
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== Publication Abstract from PubMed ==
The solution structure of oxidized Saccharomycescerevisiae Cys102Ser iso-1-cytochromechas been determined using 1361 meaningful NOEs (of 1676 total) after extending the published proton assignment [Gao, Y., et al. (1990) Biochemistry 29, 6994-7003] to 77% of all proton resonances. The NOE patterns indicate that secondary structure elements are maintained upon oxidation in solution with respect to the solid state and solution structures of the reduced species. Constraints derived from the pseudocontact shifts [diamagnetic reference shift values are those of the reduced protein [Baistrocchi, P., et al. (1996) Biochemistry 35, 13788-13796]] were used in the final stages of structure calculations. After restrained energy minimization with constraints from NOEs and pseudocontact shifts, a family of 20 structures with rmsd values of 0.58 +/- 0.08 and 1.05 +/- 0.10 A (relative to the average structure) for the backbone and all heavy atoms, respectively, was obtained. The solution structure is compared with the crystal structure and the structures of related systems. Twenty-six amide protons were detected in the NMR spectrum 6 days after the oxidized lyophilized protein was dissolved in D2O (pH 7.0 and 303 K); in an analogous experiment, 47 protons were observed in the spectrum of the reduced protein. The decrease in the number of nonexchanging amide protons, which mainly are found in the loop regions 14-26 and 75-82, confirms the greater flexibility of the structure of oxidized cytochrome c in solution. Our finding of increased solvent accessibility in these loop regions is consistent with proposals that an early step in unfolding the oxidized protein is the opening of the 70-85 loop coupled with dissociation of the Met80-iron bond.

Solution structure of oxidized Saccharomyces cerevisiae iso-1-cytochrome c.,Banci L, Bertini I, Bren KL, Gray HB, Sompornpisut P, Turano P Biochemistry. 1997 Jul 22;36(29):8992-9001. PMID:9220987<ref>PMID:9220987</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1yic" style="background-color:#fffaf0;"></div>

==See Also==
*[[Cytochrome C 3D structures|Cytochrome C 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Banci L]]
[[Category: Bertini I]]
[[Category: Bren KL]]
[[Category: Gray HB]]
[[Category: Sompornpisut P]]
[[Category: Turano P]]