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10.1016/j.biochi.2014.07.005 http://scihub22266oqcxt.onion/10.1016/j.biochi.2014.07.005 C4163530!4163530!25038566     free     free     free Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25038566&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Biochimie 2014 ; ä (ä): 159-64 Nephropedia Template TP {{tp|p=25038566|t=2014. Bound Cardiolipin Is Essential for Cytochrome c Oxidase Proton Translocation |pdf=|usr=}}{{25038566}} gab.com Text Bound Cardiolipin Is Essential for Cytochrome c Oxidase Proton Translocation JO: Biochimie http://www.kidney.de/pget.php?&tw=1&pmid=25038566 #FOAvip The proton pumping activity of bovine heart cytochrome c oxidase (CcO) is completely inhibited when all of the cardiolipin (CL) is removed from the enzyme to produce monomeric CcO containing only 11 subunits. Only dimeric enzyme containing all 13 subunits and 2?4 cardiolipin per CcO monomer exhibits a ?normal? proton translocating stoichiometry of ~1.0 H+ per/e? when reconstituted into phospholipid vesicles. These fully active proteoliposomes have high respiratory control ratios (RCR=7?15) with 75?85% of the CcO oriented with the cytochrome c binding sites exposed to the external medium. In contrast, reconstitution of CL-free CcO results in low respiratory control ratios (RCR < 5) with the enzyme randomly oriented in the vesicles, i.e., ~50 percent oriented with the cytochrome c binding site exposed on the outside of the vesicle. Addition of exogenous CL to the CL-free enzyme completely restores electron transport activity, but restoration of proton pumping activity does not occur. This is true whether CL is added to CL-free CcO prior to reconstitution into phospholipid vesicles, or whether CL is included in the phospholipid mixture that is used to form the vesicles. Another consequence of CL removal is the inability of the 11-subunit, CL-free enzyme to dimerize upon exposure to either cholate or the cholate/PC/PE/CL mixture used during proteoliposome formation (monomeric, 13-subunit, CL-containing CcO completely dimerizes under these conditions). Therefore, a major difference between reconstitution of CL-free and CL-containing CcO is the incorporation of monomeric, rather than dimeric CcO into the vesicles. We conclude that bound CL is necessary for proper insertion of CcO into phospholipid vesicles and normal proton translocation. Twit Text FOAVip Bound Cardiolipin Is Essential for Cytochrome c Oxidase Proton Translocation ????Biochimie http://www.kidney.de/pget.php?&tw=1&pmid=25038566 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=25038566 #FOAvip English Wikipedia <ref>{{Cite pmid|25038566}}</ref> Bound Cardiolipin Is Essential for Cytochrome c Oxidase Proton Translocation #MMPMID25038566 Musatov A; Robinson NC Biochimie 2014[Oct]; ä (ä): 159-64 PMID25038566show ga The proton pumping activity of bovine heart cytochrome c oxidase (CcO) is completely inhibited when all of the cardiolipin (CL) is removed from the enzyme to produce monomeric CcO containing only 11 subunits. Only dimeric enzyme containing all 13 subunits and 2?4 cardiolipin per CcO monomer exhibits a ?normal? proton translocating stoichiometry of ~1.0 H+ per/e? when reconstituted into phospholipid vesicles. These fully active proteoliposomes have high respiratory control ratios (RCR=7?15) with 75?85% of the CcO oriented with the cytochrome c binding sites exposed to the external medium. In contrast, reconstitution of CL-free CcO results in low respiratory control ratios (RCR < 5) with the enzyme randomly oriented in the vesicles, i.e., ~50 percent oriented with the cytochrome c binding site exposed on the outside of the vesicle. Addition of exogenous CL to the CL-free enzyme completely restores electron transport activity, but restoration of proton pumping activity does not occur. This is true whether CL is added to CL-free CcO prior to reconstitution into phospholipid vesicles, or whether CL is included in the phospholipid mixture that is used to form the vesicles. Another consequence of CL removal is the inability of the 11-subunit, CL-free enzyme to dimerize upon exposure to either cholate or the cholate/PC/PE/CL mixture used during proteoliposome formation (monomeric, 13-subunit, CL-containing CcO completely dimerizes under these conditions). Therefore, a major difference between reconstitution of CL-free and CL-containing CcO is the incorporation of monomeric, rather than dimeric CcO into the vesicles. We conclude that bound CL is necessary for proper insertion of CcO into phospholipid vesicles and normal proton translocation. äBound Cardiolipin Is Essential for Cytochrome c Oxidase Proton Translo(epmc).pdf DeepDyve Pubget Overpricing