Entry
Name
plastoquinol---plastocyanin reductase;
plastoquinol/plastocyanin oxidoreductase;
cytochrome f/b6 complex;
cytochrome b6f complex
Class
Translocases;
Catalysing the translocation of protons;
Linked to oxidoreductase reactions
BRITE hierarchy
Sysname
plastoquinol:oxidized-plastocyanin oxidoreductase
Reaction(IUBMB)
plastoquinol + 2 oxidized plastocyanin + 2 H+[side 1] = plastoquinone + 2 reduced plastocyanin + 4 H+[side 2] [RN:
R03817 ]
Reaction(KEGG)
Substrate
plastoquinol [CPD:
C16693 ];
oxidized plastocyanin [CPD:
C03162 ];
H+[side 1]
Product
plastoquinone [CPD:
C02061 ];
reduced plastocyanin [CPD:
C03025 ];
H+[side 2]
Comment
Contains two b-type cytochromes, two c-type cytochromes (cn and f), and a [2Fe-2S] Rieske cluster. The enzyme plays a key role in photosynthesis, transferring electrons from photosystem II (EC
1.10.3.9 ) to photosystem I (EC
1.97.1.12 ). Cytochrome c-552 can act as acceptor instead of plastocyanin, but more slowly. In chloroplasts, protons are translocated through the thylakoid membrane from the stroma to the lumen. The mechanism occurs through the Q cycle as in EC
7.1.1.8 , quinol---cytochrome-c reductase (complex III) and involves electron bifurcation.
History
EC 7.1.1.6 created 1984 as EC 1.10.99.1, transferred 2011 to EC 1.10.9.1, transferred 2018 to EC 7.1.1.6
Pathway
Orthology
K02636 cytochrome b6-f complex iron-sulfur subunit
Genes
CSAT : 104707757 104715172 104738479
BNA : 106389955 106392303 106431526 106438729
MINC : 123196593 123224144
GHI : 107886732 107886733 107909236 107909237
HSYR : 120129164 120142870 120150776 120178073
DZI : 111282552 111298614 111308428
GMX : 100127419(PETC) 100799420
TPRA : 123894639 123898217
VVO : 131599186 131630260 131648085
LJA : Lj3g3v2742950.1(Lj3g3v2742950.1)
ADU : 107462083 107477915 127744044
AHF : 112707058 112737603 112772680 112789729
LANG : 109338331 109343276 109347638
PCIN : 129295079 129313161 129315826
QSA : O6P43_000646 O6P43_000909
MSYL : 126583394 126612173
CMAX : 111468309 111486141
CMOS : 111437235 111455612
CPEP : 111793654 111811805
MESC : 110600408 110608049
PALZ : 118028175 118029542
CILL : 122280338 122289077
VVI : 100245219 100256300 100258879
NTA : 107765416(petC) 107805497(petC2)
SIND : 105162660 105178615
OEU : 111371939 111389733 111394769
SSPL : 121742482 121756416 121759644
SHIS : 125191062 125195947
HAN : 110898900 110912849 110929744
ECAD : 122593279 122599029
CCAV : 112500184 112507696
AEW : 130751330 130754979 130761971 130774291
ATRI : 130805741 130806342
PSOM : 113287773 113305396
DOSA : Os07t0556200-01(Os07g0556200)
TAES : 123044564 123171554 123188289 543078
LPER : 127328687 127333119
PVIR : 120655269 120696403
NCOL : 116264773 116265059 116266556
SMO : SELMODRAFT_166088 SELMODRAFT_174399
VCN : VOLCADRAFT_109628(gon9)
MPP : MICPUCDRAFT_36185(PETC)
CME : CYME_CMI281C CYME_CMO066C CYME_CMQ165C
GSL : Gasu_06700 Gasu_34460
SMIN : v1.2.006093.t1(symbB.v1.2.006093.t1) v1.2.006094.t1(symbB.v1.2.006094.t1) v1.2.006095.t1(symbB.v1.2.006095.t1) v1.2.018676.t1(symbB.v1.2.018676.t1) v1.2.018676.t2(symbB.v1.2.018676.t2) v1.2.035696.t2(symbB.v1.2.035696.t2)
PTI : PHATR_13358 PHATR_46657(petC)
FCY : FRACYDRAFT_216240 FRACYDRAFT_268792
TPS : THAPSDRAFT_270229 THAPSDRAFT_38231(PETC2)
AAF : AURANDRAFT_59217(petC) AURANDRAFT_8535
EHX : EMIHUDRAFT_45249 EMIHUDRAFT_45312
GTT : GUITHDRAFT_183242(PetC)
GME : Gmet_0538(cbcO) Gmet_1922(cbcV) Gmet_2121(pcmE)
GEM : GM21_2851 GM21_3173 GM21_4116
GEO : Geob_0123(pcmE) Geob_1345(cbcO)
GBM : Gbem_1088(cbcV) Gbem_4025(cbcO)
GBN : GEOBRER4_30140 GEOBRER4_30840 GEOBRER4_38940
GER : KP004_14930 KP004_19390
GSUB : KP001_01760 KP001_16930
DES : DSOUD_1848 DSOUD_2442
ACP : A2cp1_1553 A2cp1_3337
AFW : Anae109_0241 Anae109_0582
ANK : AnaeK_1458 AnaeK_3259
MFB : MFUL124B02_38020 MFUL124B02_42690
DAI : Desaci_0892 Desaci_3268
AACX : DEACI_0630 DEACI_0718
EUZ : DVS28_a2472 DVS28_a4621
AQZ : KSP35_11615 KSP35_17665
SYN : sll1182(petC) sll1316(petC) slr1185(petC)
SYZ : MYO_110630(petC) MYO_117060(petC) MYO_131630(petC)
SYY : SYNGTS_1054(petC) SYNGTS_1688(petC) SYNGTS_3127(petC)
SYT : SYNGTI_1054(petC) SYNGTI_1688(petC) SYNGTI_3126(petC)
SYS : SYNPCCN_1053(petC) SYNPCCN_1687(petC) SYNPCCN_3125(petC)
SYQ : SYNPCCP_1053(petC) SYNPCCP_1687(petC) SYNPCCP_3125(petC)
SYJ : D082_26430(petC1) D082_33580(petC3)
SYO : C7I86_05470 C7I86_08775 C7I86_16420
SYR : SynRCC307_0704(petC)
SYX : SynWH7803_1850(petC)
CYA : CYA_1153 CYA_1403(petC)
CYB : CYB_1622(petC) CYB_2623
SYH : Syncc8109_0687(petC)
SYNW : SynWH8103_02096(petC)
SYNY : BM449_00995 BM449_03130
DSL : Dacsa_0018 Dacsa_0527
WNA : KA717_31040 KA717_33500
CMP : Cha6605_0174 Cha6605_0479 Cha6605_1594 Cha6605_1789 Cha6605_2993
CEP : Cri9333_3513 Cri9333_3730
TVN : NIES2134_109570(petC)
AMR : AM1_0450 AM1_1961 AM1_3682 AM1_4450(petC)
ACAM : HRE53_07615 HRE53_17585
TSZ : OOK60_04665 OOK60_06720
LEN : LEP3755_01230 LEP3755_20260
LET : O77CONTIG1_03342(petC_1) O77CONTIG1_03479(petC_2)
LBO : LBWT_24120 LBWT_55000
KOV : K9N68_06120 K9N68_23960
LSC : KIK02_04735 KIK02_09855
LSK : J5X98_03300 J5X98_04355 J5X98_16450
HHG : XM38_024430(petC_1) XM38_031430(petC_2) XM38_043580(petC_3) XM38_045840(petC_4)
PSEU : Pse7367_2670 Pse7367_3073 Pse7367_3798
PSER : ABRG53_0591(petC) ABRG53_2912(petC)
PGX : OA858_05785 OA858_09965 OA858_16980 OA858_24795
THEU : HPC62_05865 HPC62_06390
TOG : HNI00_10105 HNI00_18950
GLP : Glo7428_4114 Glo7428_5108
CHON : NIES4102_10180 NIES4102_28470 NIES4102_29320 NIES4102_37910 NIES4102_40570
CAN : Cyan10605_0985 Cyan10605_1627 Cyan10605_2697
SYP : SYNPCC7002_A1097 SYNPCC7002_A1909(petC) SYNPCC7002_G0076(petC-II)
SYV : AWQ23_05645 AWQ23_09605 AWQ23_15035
SYL : AWQ21_05665 AWQ21_09030 AWQ21_15570
LEP : Lepto7376_0641 Lepto7376_2915 Lepto7376_3231 Lepto7376_3507
SYNN : NIES970_09120 NIES970_20760(petC)
MAR : MAE_19220(petC1) MAE_29060(petC2)
MVZ : myaer102_05070(petC2) myaer102_52410(petC1)
ENN : FRE64_06705 FRE64_13215 FRE64_13905
CYT : cce_2958(petC1) cce_3410(petC2)
CYC : PCC7424_1693 PCC7424_3950 PCC7424_4636
CYJ : Cyan7822_0236 Cyan7822_4646
PAGH : NIES204_37360(petC)
PPSU : NO713_00497(petC) NO713_01208(petC) NO713_02690(petC1) NO713_02986(petC2) NO713_05499(petC)
PRUN : PCC7821_00266(petC)
OXY : HCG48_08870 HCG48_11380
OAC : Oscil6304_4255 Oscil6304_4662 Oscil6304_5889
ONI : Osc7112_1417 Osc7112_1984
MPRO : BJP34_17055 BJP34_32935
PHOR : JWS08_05995 JWS08_16710
MIC : Mic7113_3059 Mic7113_5239 Mic7113_6086
GEI : GEI7407_0642 GEI7407_1514
GLJ : GKIL_0313(petC) GKIL_0990
ANA : all0606(petC) all1512(petC) all2453(petC) all4511(petC)
NPU : Npun_F1529 Npun_R0132 Npun_R5257
NOS : Nos7107_0932 Nos7107_2253 Nos7107_3506
NOP : Nos7524_1114 Nos7524_2842 Nos7524_4344
NON : NOS3756_02300(petC) NOS3756_09390
NFL : COO91_04989 COO91_05897
NOE : CLI64_07170 CLI64_23830 CLI64_24380
NSH : GXM_01875 GXM_05608 GXM_06314 GXM_07204 GXM_09036
NED : HUN01_01500 HUN01_32430 HUN01_32515 HUN01_33555 HUN01_33665
NPZ : ACX27_06600 ACX27_08190
AVA : Ava_0385 Ava_3377 Ava_4538
ANB : ANA_C10614(petC1) ANA_C13772(petC2)
ACY : Anacy_0767 Anacy_1090 Anacy_1498
AWA : AA650_13345 AA650_17855
ANN : EH233_06050 EH233_06360 EH233_13980
CSG : Cylst_3623 Cylst_5913
RSIN : B6N60_00063 B6N60_04714
HBQ : QI031_07130 QI031_11550 QI031_28625 QI031_30640
CALO : Cal7507_1842 Cal7507_2106
CALT : Cal6303_0510 Cal6303_1119 Cal6303_4398
CALH : IJ00_07790 IJ00_13915 IJ00_18235 IJ00_20505 IJ00_22580
CALN : NIES2098_45460 NIES2098_60400 NIES2098_60860(petC)
CALS : NIES3974_05160 NIES3974_48370
RIV : Riv7116_0140 Riv7116_1107
FIS : FIS3754_14320 FIS3754_15310
NSP : BMF81_02901(petC) BMF81_03752(petC_2)
NSPH : BDGGKGIB_00458(petC_1) BDGGKGIB_00920(petC1) BDGGKGIB_01285(petC_2)
DOU : BMF77_01134(petC1) BMF77_03986(petC)
DFS : HGD76_12370 HGD76_17945 HGD76_19120
DHT : NG743_07570 NG743_23220
CCUR : IAR63_08595 IAR63_14245
CRK : L3I90_13200 L3I90_16790
AFLO : HEQ12_02430 HEQ12_06060
STOQ : K2F26_02780 K2F26_17115
AEE : IM676_16560 IM676_19570
RCS : NIES932_07050 NIES932_21000
TOQ : HCG51_03935 HCG51_24675 HCG51_29755
ALAX : NIES50_45900 NIES50_49540 NIES50_61920(petC_1) NIES50_67590 NIES50_69240(petC_2)
CTHE : Chro_2037 Chro_5688
PLP : Ple7327_0459 Ple7327_1003 Ple7327_4542
SCS : Sta7437_1158 Sta7437_4686
STAN : STA3757_02820 STA3757_10490(petC)
PMET : G4Y79_01670 G4Y79_20685
DEIN : DAAJ005_00770 DAAJ005_11685
AAGG : ETAA8_33280(petC_1) ETAA8_67850(petC_2)
LPAV : PLANPX_4647 PLANPX_4754
KST : KSMBR1_1275(petC) KSMBR1_3797(qcrB_2)
BROC : IPI25_04930 IPI25_10415
BPIT : BPIT_04780 BPIT_21240
JET : L3J17_03320 L3J17_10600
HBS : IPV69_07820 IPV69_25530
DRC : G0Q07_09705 G0Q07_19415
MCOS : GM418_00395 GM418_06255
PEP : AQ505_12515 AQ505_16965
STHA : NCTC11429_04404(petC)
MUP : A0256_02455 A0256_09660
SRD : SD10_00730 SD10_11200
SMON : AWR27_07175 AWR27_23020
SPIR : CWM47_14115 CWM47_26590
SPIK : EXU85_17900 EXU85_32395
SRHO : HH216_06740 HH216_20085
SFOL : H3H32_09660 H3H32_28225
RSI : Runsl_1013 Runsl_5181
RUN : DR864_14110 DR864_27970
RUP : DTQ70_12140 DTQ70_21720
EOL : Emtol_0682 Emtol_4004
HNV : DDQ68_02660 DDQ68_05040
SALT : AO058_00270 AO058_06315
AALG : AREALGSMS7_02419(petC1)
CGLE : NCTC11432_01271(petC1)
PROC : Ptc2401_01878(petC_2)
MOX : DAMO_0767 DAMO_0820 DAMO_1672(petC)
» show all
Taxonomy
Reference
Authors
Hurt E, Hauska G.
Title
A cytochrome f/b6 complex of five polypeptides with plastoquinol-plastocyanin-oxidoreductase activity from spinach chloroplasts.
Journal
Reference
Authors
Cramer WA, Zhang H
Title
Consequences of the structure of the cytochrome b6f complex for its charge transfer pathways.
Journal
Other DBs
ExplorEnz - The Enzyme Database: 7.1.1.6
ExPASy - ENZYME nomenclature database: 7.1.1.6
BRENDA, the Enzyme Database: 7.1.1.6