QCR7_SOLTU
ID QCR7_SOLTU Reviewed; 123 AA.
AC P48502;
DT 01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1996, sequence version 1.
DT 25-MAY-2022, entry version 107.
DE RecName: Full=Cytochrome b-c1 complex subunit 7;
DE AltName: Full=CR14;
DE AltName: Full=Complex III subunit 7;
DE AltName: Full=Complex III subunit VII;
DE AltName: Full=Ubiquinol-cytochrome c reductase complex 14 kDa protein;
OS Solanum tuberosum (Potato).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Solanales; Solanaceae; Solanoideae; Solaneae; Solanum.
OX NCBI_TaxID=4113;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC STRAIN=cv. Desiree; TISSUE=Tuber;
RX PubMed=7770525; DOI=10.1104/pp.107.4.1217;
RA Braun H.-P., Schmitz U.K.;
RT "Molecular features and mitochondrial import pathway of the 14-kilodalton
RT subunit of cytochrome c reductase from potato.";
RL Plant Physiol. 107:1217-1223(1995).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. DM1-3 516 R44;
RX PubMed=21743474; DOI=10.1038/nature10158;
RG The Potato Genome Sequencing Consortium;
RT "Genome sequence and analysis of the tuber crop potato.";
RL Nature 475:189-195(2011).
RN [3]
RP PROTEIN SEQUENCE OF 14-23; 49-74; 76-91 AND 103-122.
RC STRAIN=cv. Hansa; TISSUE=Tuber;
RX PubMed=7764624; DOI=10.1007/bf00191612;
RA Braun H.-P., Kruft V., Schmitz U.K.;
RT "Molecular identification of the ten subunits of cytochrome-c reductase
RT from potato mitochondria.";
RL Planta 193:99-106(1994).
CC -!- FUNCTION: Component of the ubiquinol-cytochrome c oxidoreductase, a
CC multisubunit transmembrane complex that is part of the mitochondrial
CC electron transport chain which drives oxidative phosphorylation. The
CC respiratory chain contains 3 multisubunit complexes succinate
CC dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase
CC (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase
CC (complex IV, CIV), that cooperate to transfer electrons derived from
CC NADH and succinate to molecular oxygen, creating an electrochemical
CC gradient over the inner membrane that drives transmembrane transport
CC and the ATP synthase. The cytochrome b-c1 complex catalyzes electron
CC transfer from ubiquinol to cytochrome c, linking this redox reaction to
CC translocation of protons across the mitochondrial inner membrane, with
CC protons being carried across the membrane as hydrogens on the quinol.
CC In the process called Q cycle, 2 protons are consumed from the matrix,
CC 4 protons are released into the intermembrane space and 2 electrons are
CC passed to cytochrome c. {ECO:0000250|UniProtKB:P00128}.
CC -!- SUBUNIT: Component of the ubiquinol-cytochrome c oxidoreductase
CC (cytochrome b-c1 complex, complex III, CIII), a multisubunit enzyme
CC composed of 3 respiratory subunits cytochrome b, cytochrome c1 and
CC Rieske protein, 2 core protein subunits, and additional low-molecular
CC weight protein subunits. The complex exists as an obligatory dimer and
CC forms supercomplexes (SCs) in the inner mitochondrial membrane with
CC cytochrome c oxidase (complex IV, CIV). {ECO:0000250|UniProtKB:P00128}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC {ECO:0000250|UniProtKB:P00128}; Peripheral membrane protein
CC {ECO:0000250|UniProtKB:P00128}; Matrix side
CC {ECO:0000250|UniProtKB:P00128}.
CC -!- PTM: The N-terminus is blocked.
CC -!- SIMILARITY: Belongs to the UQCRB/QCR7 family. {ECO:0000305}.
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DR EMBL; X79276; CAA55863.1; -; mRNA.
DR PIR; T07368; T07368.
DR RefSeq; NP_001274887.1; NM_001287958.1.
DR AlphaFoldDB; P48502; -.
DR SMR; P48502; -.
DR STRING; 4113.PGSC0003DMT400074807; -.
DR EnsemblPlants; PGSC0003DMT400074807; PGSC0003DMT400074807; PGSC0003DMG400029087.
DR EnsemblPlants; RHC08H1G1434.2.1; RHC08H1G1434.2.1; RHC08H1G1434.2.
DR GeneID; 102598697; -.
DR Gramene; PGSC0003DMT400074807; PGSC0003DMT400074807; PGSC0003DMG400029087.
DR Gramene; RHC08H1G1434.2.1; RHC08H1G1434.2.1; RHC08H1G1434.2.
DR KEGG; sot:102598697; -.
DR eggNOG; KOG3440; Eukaryota.
DR HOGENOM; CLU_115154_3_0_1; -.
DR InParanoid; P48502; -.
DR OMA; QTALHWV; -.
DR OrthoDB; 1606436at2759; -.
DR Proteomes; UP000011115; Unassembled WGS sequence.
DR GO; GO:0005750; C:mitochondrial respiratory chain complex III; IBA:GO_Central.
DR GO; GO:0006122; P:mitochondrial electron transport, ubiquinol to cytochrome c; IBA:GO_Central.
DR Gene3D; 1.10.1090.10; -; 1.
DR InterPro; IPR003197; QCR7.
DR InterPro; IPR036544; QCR7_sf.
DR PANTHER; PTHR12022; PTHR12022; 1.
DR Pfam; PF02271; UCR_14kD; 1.
DR PIRSF; PIRSF000022; Bc1_14K; 1.
DR SUPFAM; SSF81524; SSF81524; 1.
PE 1: Evidence at protein level;
KW Direct protein sequencing; Electron transport; Membrane; Mitochondrion;
KW Mitochondrion inner membrane; Reference proteome; Respiratory chain;
KW Transport.
FT CHAIN 1..123
FT /note="Cytochrome b-c1 complex subunit 7"
FT /id="PRO_0000193530"
FT CONFLICT 71
FT /note="M -> V (in Ref. 3; AA sequence)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 123 AA; 14471 MW; 0B0F15063418AC61 CRC64;
MASSFSRWLV DPKKNPLAAI HMKTLSSRLR NYGLRHDDLY DPMYDLDVKE ALNRLPREIV
DARNQRLLRA MDLSMKHQYL PEDLQAMQTP FRNYLQEMLA LVKRESAERE ALGALPLYQR
TLP
