ID 7.1.1.8 DE quinol--cytochrome-c reductase. AN complex III (mitochondrial electron transport). AN cytochrome bc1 complex. AN ubiquinol--cytochrome-c reductase. AN ubiquinone--cytochrome-c oxidoreductase. CA a quinol + 2 Fe(III)-[cytochrome c](out) = a quinone + 2 Fe(II)- CA [cytochrome c](out) + 2 H(+)(out). CC -!- The enzyme, often referred to as the cytochrome bc1 complex or CC complex III, is the third complex in the electron transport chain. CC -!- It is present in the mitochondria of all aerobic eukaryotes and in CC the inner membranes of most bacteria. CC -!- The mammalian enzyme contains cytochromes b-562, b-566 and c1, and a CC 2-iron ferredoxin. CC -!- Depending on the organism and physiological conditions, the enzyme CC extrudes either two or four protons from the cytoplasmic to the non- CC cytoplasmic compartment (cf. EC 1.6.99.3). CC -!- Formerly EC 1.10.2.2. DR P25076, CY11_SOLTU ; P29610, CY12_SOLTU ; P00125, CY1_BOVIN ; DR Q54D07, CY1_DICDI ; P20114, CY1_EUGGR ; P08574, CY1_HUMAN ; DR Q00988, CY1_KLULA ; Q9D0M3, CY1_MOUSE ; P07142, CY1_NEUCR ; DR O59680, CY1_SCHPO ; P07143, CY1_YEAST ; Q35128, CYB_NEUCR ; DR P00163, CYB_YEAST ; A0A1D8PHA3, CYT1_CANAL ; P29677, MPPA_SOLTU ; DR Q6NGA3, QCRB_CORDI ; Q8FNR2, QCRB_COREF ; Q79VE9, QCRB_CORGL ; DR P63886, QCRB_MYCBO ; P15878, QCRB_MYCLE ; P9WP36, QCRB_MYCTO ; DR P9WP37, QCRB_MYCTU ; Q9X806, QCRB_STRCO ; Q9ZFB6, QCRB_STRLI ; DR Q6NGA1, QCRC_CORDI ; Q8FNR0, QCRC_COREF ; Q8NNK5, QCRC_CORGL ; DR P63888, QCRC_MYCBO ; O69583, QCRC_MYCLE ; P9WP34, QCRC_MYCTO ; DR P9WP35, QCRC_MYCTU ; A0A1D8PJX3, RIP1_CANAL ; Q94JS0, UCRI1_ARATH; DR P49729, UCRI1_TOBAC; Q9LYR2, UCRI2_ARATH; P51132, UCRI2_TOBAC; DR P51133, UCRI3_TOBAC; P51134, UCRI4_TOBAC; P51135, UCRI5_TOBAC; DR O31214, UCRI_ALLVD ; Q69BJ9, UCRI_AOTAZ ; P81380, UCRI_BLAVI ; DR P13272, UCRI_BOVIN ; P51130, UCRI_BRADU ; Q02762, UCRI_CERSP ; DR Q5ZLR5, UCRI_CHICK ; Q69BK1, UCRI_CHLAE ; Q69BK0, UCRI_COLPO ; DR Q69BK4, UCRI_GORGO ; P47985, UCRI_HUMAN ; Q69BJ8, UCRI_LAGLA ; DR P49727, UCRI_MAIZE ; Q9CR68, UCRI_MOUSE ; P07056, UCRI_NEUCR ; DR Q69BK6, UCRI_PANPA ; Q69BK5, UCRI_PANTR ; P05417, UCRI_PARDE ; DR Q69BK3, UCRI_PONPY ; P20788, UCRI_RAT ; P0CY48, UCRI_RHOCA ; DR D5ANZ2, UCRI_RHOCB ; P23136, UCRI_RHORU ; Q1RIA5, UCRI_RICBR ; DR Q92IR2, UCRI_RICCN ; Q4UKR6, UCRI_RICFE ; Q9ZDQ5, UCRI_RICPR ; DR Q68XA0, UCRI_RICTY ; Q69BJ7, UCRI_SAISC ; Q09154, UCRI_SCHPO ; DR P37841, UCRI_SOLTU ; Q69BJ6, UCRI_SYMSY ; Q69BK2, UCRI_THEGE ; DR P08067, UCRI_YEAST ; //