Cytochrome bc1 complex: Difference between revisions

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Michal Harel, Alexander Berchansky, Karl Oberholser, Jaime Prilusky, Joel L. Sussman

Revision as of 15:22, 22 December 2015 view source Alexander Berchansky (talk \| contribs) 29,637 edits No edit summary ← Older edit		Revision as of 15:26, 22 December 2015 view source Alexander Berchansky (talk \| contribs) 29,637 edits No edit summary Newer edit →
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	<StructureSection load='1zrt' size='350' side='right' caption='Cytochrome bc1 containing Cb (~~pink, neon~~ green), Cc1 (yellow~~, sea green~~), RISP (~~magenta, blue~~) and Fe2S2 complex with stigmatellin (PDB entry [[1zrt]])' scene='49/490879/Cv/1'>		<StructureSection load='1zrt' size='350' side='right' caption='Cytochrome bc1 containing Cb (green), Cc1 (yellow), RISP (moccasin) and Fe2S2 complex with stigmatellin (PDB entry [[1zrt]])' scene='49/490879/Cv/6'>

	'''Cytochrome bc1''' (Cbc1) functions as the central pump which transfers protons across the cell membrane. The protons are used to power the rotation of ATP synthase. Cbc1 binds ubiquinol which carries hydrogen atoms. Cbc1 separates the protons and the electrons. The protons are released in the inner side of the membrane for use by ATP synthase and the electrons are transferred to cytochrome c or to the outer side of the membrane. Plants use '''cytochrome b6f''' in the same manner binding plastoquinol as a hydrogen carrier. Stigmatellin inhibits the Cbc1 electron transfer by binding to its quinone oxidation site. Antimycin inhibits Cbc1 by binding to its quinone reduction site.<ref>PMID:14977419</ref>		'''Cytochrome bc1''' (Cbc1) functions as the central pump which transfers protons across the cell membrane. The protons are used to power the rotation of ATP synthase. Cbc1 binds ubiquinol which carries hydrogen atoms. Cbc1 separates the protons and the electrons. The protons are released in the inner side of the membrane for use by ATP synthase and the electrons are transferred to cytochrome c or to the outer side of the membrane. Plants use '''cytochrome b6f''' in the same manner binding plastoquinol as a hydrogen carrier. Stigmatellin inhibits the Cbc1 electron transfer by binding to its quinone oxidation site. Antimycin inhibits Cbc1 by binding to its quinone reduction site.<ref>PMID:14977419</ref>