1s6v

<table><tr><td colspan='2'>[[1s6v]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S6V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1S6V FirstGlance]. <br>

</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=IOD:IODIDE+ION'>IOD</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2pcc|2pcc]]</div></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CCP1, CCP, CPO, YKR066C ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Cytochrome-c_peroxidase Cytochrome-c peroxidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.5 1.11.1.5] </span></td></tr>

[[https://www.uniprot.org/uniprot/CCPR_YEAST CCPR_YEAST]] Destroys radicals which are normally produced within the cells and which are toxic to biological systems. [[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.

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== Publication Abstract from PubMed ==

A specific covalently cross-linked complex between redox partners yeast cytochrome c peroxidase (CCP) and cytochrome c (cyt. c) has been made by engineering cysteines into CCP and cyt. c that form an intermolecular disulfide bond in high yield. The crystal structure of the cross-linked complex has been solved to 1.88-A resolution and closely resembles the structure of the noncovalent complex [Pellitier, H. &amp; Kraut, J. (1992) Science 258, 1748-1755]. The higher resolution of the covalent complex has enabled the location of ordered water molecules at the peroxidase-cytochrome c interface that serve to bridge between the two proteins by hydrogen bonding. As in the noncovalent complex, direct electrostatic interactions between protein groups appear not to be critical in complex formation. UV-visible spectroscopic and stopped-flow studies indicate that CCP in the covalent complex reacts normally with H(2)O(2) to give compound I. Stopped-flow kinetic studies also show that intramolecular electron transfer between the cross-linked ferrocytochrome c and the Trp-191 cation radical site in CCP compound I occurs fast and is nearly complete within the dead time ( approximately 2 ms) of the instrument. These results indicate that the structure of the covalent complex closely mimics the physiological electron transfer complex. In addition, single-turnover and steady-state experiments reveal that CCP compound I in the covalent complex oxidizes exogenously added ferrocytochrome c at a slow rate (t(1/2) approximately 2 min), indicating that CCP does not have a second independent site for physiologically relevant electron transfer.

Crystal structure and characterization of a cytochrome c peroxidase-cytochrome c site-specific cross-link.,Guo M, Bhaskar B, Li H, Barrows TP, Poulos TL Proc Natl Acad Sci U S A. 2004 Apr 20;101(16):5940-5. Epub 2004 Apr 7. PMID:15071191<ref>PMID:15071191</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 1s6v" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Atcc 18824]]

[[Category: Cytochrome-c peroxidase]]

[[Category: Barrows, T P]]

[[Category: Bhaskar, B]]

[[Category: Guo, M]]

[[Category: Li, H]]

[[Category: Poulos, T L]]

[[Category: Oxidoreductase-electron transport complex]]