View source for 1cyc


==THE CRYSTAL STRUCTURE OF BONITO (KATSUO) FERROCYTOCHROME C AT 2.3 ANGSTROMS RESOLUTION. II. STRUCTURE AND FUNCTION==
<StructureSection load='1cyc' size='340' side='right'caption='[[1cyc]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1cyc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Katsuwonus_pelamis Katsuwonus pelamis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CYC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CYC FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</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></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=1cyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cyc OCA], [https://pdbe.org/1cyc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cyc RCSB], [https://www.ebi.ac.uk/pdbsum/1cyc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cyc ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYC_KATPE CYC_KATPE] 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/cy/1cyc_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=1cyc ConSurf].
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== Publication Abstract from PubMed ==
The structure analysis of bonito heart ferrocytochrome c was carried out at 2.3 A resolution by X-ray diffraction, and a Kendrew-type skeletal model was built up. This molecule has an overall egg shape, 35 A in height, 30 A in width and 23 A in thickness; the 5th ligand of the heme iron atom is the N-epsilon atom of the His-18 imidazole ring and the 6th is the Met-80 sulfur atom. Distinct alpha-helix regions are found between the N-terminus and reside 11, between 60 and 69, and between 90 and the C-terminus. The most distinct difference between the conformation of the present molecule and that of the horse oxidized molecule is the location of the Phe-82 phenyl ring. In the present reduced molecule, the phyenyl ring is in closer contact with the iron atom and gives influences on the character of the iron atom. Inside the molecule, at the lower part of the heme pocket, there is an extended hydrogen bond network including the propionic acid residues of the heme group. Both Phe-82 and the hydrogen bond network may play a key role in the function of this molecule.

The crystal structure of bonito (katsuo) ferrocytochrome c at 2.3 A resolution. II. Structure and function.,Tanaka N, Yamane T, Tsukihara T, Ashida T, Kakudo M J Biochem. 1975 Jan 1;77(1?):147-62. PMID:166072<ref>PMID:166072</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 1cyc" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Katsuwonus pelamis]]
[[Category: Large Structures]]
[[Category: Ashida T]]
[[Category: Kakudo M]]
[[Category: Tanaka N]]
[[Category: Tsukihara T]]
[[Category: Yamane T]]