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QCR61_ARATH
ID   QCR61_ARATH             Reviewed;          69 AA.
AC   Q0WWE3; Q8LDP7; Q9XI58;
DT   26-FEB-2020, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   25-MAY-2022, entry version 133.
DE   RecName: Full=Cytochrome b-c1 complex subunit 6-1, mitochondrial;
DE   AltName: Full=Complex III subunit 6-1;
DE   AltName: Full=Complex III subunit VI;
DE   AltName: Full=Mitochondrial hinge protein;
DE   AltName: Full=Ubiquinol-cytochrome c oxidoreductase subunit 6-1;
GN   Name=QCR6-1; OrderedLocusNames=At1g15120 {ECO:0000312|Araport:AT1G15120};
GN   ORFNames=F9L1.5 {ECO:0000312|EMBL:AAD39640.1};
OS   Arabidopsis thaliana (Mouse-ear cress).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX   NCBI_TaxID=3702;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=11130712; DOI=10.1038/35048500;
RA   Theologis A., Ecker J.R., Palm C.J., Federspiel N.A., Kaul S., White O.,
RA   Alonso J., Altafi H., Araujo R., Bowman C.L., Brooks S.Y., Buehler E.,
RA   Chan A., Chao Q., Chen H., Cheuk R.F., Chin C.W., Chung M.K., Conn L.,
RA   Conway A.B., Conway A.R., Creasy T.H., Dewar K., Dunn P., Etgu P.,
RA   Feldblyum T.V., Feng J.-D., Fong B., Fujii C.Y., Gill J.E., Goldsmith A.D.,
RA   Haas B., Hansen N.F., Hughes B., Huizar L., Hunter J.L., Jenkins J.,
RA   Johnson-Hopson C., Khan S., Khaykin E., Kim C.J., Koo H.L.,
RA   Kremenetskaia I., Kurtz D.B., Kwan A., Lam B., Langin-Hooper S., Lee A.,
RA   Lee J.M., Lenz C.A., Li J.H., Li Y.-P., Lin X., Liu S.X., Liu Z.A.,
RA   Luros J.S., Maiti R., Marziali A., Militscher J., Miranda M., Nguyen M.,
RA   Nierman W.C., Osborne B.I., Pai G., Peterson J., Pham P.K., Rizzo M.,
RA   Rooney T., Rowley D., Sakano H., Salzberg S.L., Schwartz J.R., Shinn P.,
RA   Southwick A.M., Sun H., Tallon L.J., Tambunga G., Toriumi M.J., Town C.D.,
RA   Utterback T., Van Aken S., Vaysberg M., Vysotskaia V.S., Walker M., Wu D.,
RA   Yu G., Fraser C.M., Venter J.C., Davis R.W.;
RT   "Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana.";
RL   Nature 408:816-820(2000).
RN   [2]
RP   GENOME REANNOTATION.
RC   STRAIN=cv. Columbia;
RX   PubMed=27862469; DOI=10.1111/tpj.13415;
RA   Cheng C.Y., Krishnakumar V., Chan A.P., Thibaud-Nissen F., Schobel S.,
RA   Town C.D.;
RT   "Araport11: a complete reannotation of the Arabidopsis thaliana reference
RT   genome.";
RL   Plant J. 89:789-804(2017).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RA   Totoki Y., Seki M., Ishida J., Nakajima M., Enju A., Kamiya A.,
RA   Narusaka M., Shin-i T., Nakagawa M., Sakamoto N., Oishi K., Kohara Y.,
RA   Kobayashi M., Toyoda A., Sakaki Y., Sakurai T., Iida K., Akiyama K.,
RA   Satou M., Toyoda T., Konagaya A., Carninci P., Kawai J., Hayashizaki Y.,
RA   Shinozaki K.;
RT   "Large-scale analysis of RIKEN Arabidopsis full-length (RAFL) cDNAs.";
RL   Submitted (JUL-2006) to the EMBL/GenBank/DDBJ databases.
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RA   Quinitio C., Chen H., Kim C.J., Shinn P., Ecker J.R.;
RT   "Arabidopsis ORF clones.";
RL   Submitted (SEP-2006) to the EMBL/GenBank/DDBJ databases.
RN   [5]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia; TISSUE=Rosette leaf;
RX   PubMed=19423640; DOI=10.1093/dnares/dsp009;
RA   Iida K., Fukami-Kobayashi K., Toyoda A., Sakaki Y., Kobayashi M., Seki M.,
RA   Shinozaki K.;
RT   "Analysis of multiple occurrences of alternative splicing events in
RT   Arabidopsis thaliana using novel sequenced full-length cDNAs.";
RL   DNA Res. 16:155-164(2009).
RN   [6]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RA   Brover V.V., Troukhan M.E., Alexandrov N.A., Lu Y.-P., Flavell R.B.,
RA   Feldmann K.A.;
RT   "Full-length cDNA from Arabidopsis thaliana.";
RL   Submitted (MAR-2002) to the EMBL/GenBank/DDBJ databases.
RN   [7]
RP   SUBUNIT.
RX   PubMed=12970493; DOI=10.1104/pp.103.024620;
RA   Eubel H., Jansch L., Braun H.P.;
RT   "New insights into the respiratory chain of plant mitochondria.
RT   Supercomplexes and a unique composition of complex II.";
RL   Plant Physiol. 133:274-286(2003).
RN   [8]
RP   IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
RX   PubMed=22223895; DOI=10.1074/mcp.m111.015131;
RA   Bienvenut W.V., Sumpton D., Martinez A., Lilla S., Espagne C., Meinnel T.,
RA   Giglione C.;
RT   "Comparative large-scale characterisation of plant vs. mammal proteins
RT   reveals similar and idiosyncratic N-alpha acetylation features.";
RL   Mol. Cell. Proteomics 11:M111.015131-M111.015131(2012).
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:P00127}.
CC   -!- SUBUNIT: Component of the ubiquinol-cytochrome c oxidoreductase
CC       (cytochrome b-c1 complex, complex III, CIII), a multisubunit enzyme
CC       composed of 10 subunits. The complex is composed of 3 respiratory
CC       subunits cytochrome b (MT-CYB), cytochrome c1 (CYC1-1 or CYC1-2) and
CC       Rieske protein (UCR1-1 or UCR1-2), 2 core protein subunits MPPalpha1
CC       (or MPPalpha2) and MPPB, and 5 low-molecular weight protein subunits
CC       QCR7-1 (or QCR7-2), UCRQ-1 (or UCRQ-2), QCR9, UCRY and probably QCR6-1
CC       (or QCR6-2) (Probable). The complex exists as an obligatory dimer and
CC       forms supercomplexes (SCs) in the inner mitochondrial membrane with
CC       NADH-ubiquinone oxidoreductase (complex I, CI), resulting in different
CC       assemblies (supercomplexes SCI(1)III(2) and SCI(2)III(4))
CC       (PubMed:12970493). {ECO:0000269|PubMed:12970493, ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000250|UniProtKB:P00127}; Peripheral membrane protein
CC       {ECO:0000250|UniProtKB:P00127}; Intermembrane side
CC       {ECO:0000250|UniProtKB:P00127}.
CC   -!- SIMILARITY: Belongs to the UQCRH/QCR6 family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAD39640.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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DR   EMBL; AC007591; AAD39640.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; CP002684; AEE29267.1; -; Genomic_DNA.
DR   EMBL; AK226409; BAE98555.1; -; mRNA.
DR   EMBL; BT028948; ABI49495.1; -; mRNA.
DR   EMBL; AK318966; BAH57081.1; -; mRNA.
DR   EMBL; AY085872; AAM63085.1; -; mRNA.
DR   PIR; H86284; H86284.
DR   RefSeq; NP_172964.1; NM_101380.3.
DR   AlphaFoldDB; Q0WWE3; -.
DR   SMR; Q0WWE3; -.
DR   STRING; 3702.AT1G15120.2; -.
DR   PRIDE; Q0WWE3; -.
DR   ProteomicsDB; 191872; -.
DR   EnsemblPlants; AT1G15120.1; AT1G15120.1; AT1G15120.
DR   GeneID; 838075; -.
DR   Gramene; AT1G15120.1; AT1G15120.1; AT1G15120.
DR   KEGG; ath:AT1G15120; -.
DR   Araport; AT1G15120; -.
DR   HOGENOM; CLU_115913_2_1_1; -.
DR   OMA; YQACTRR; -.
DR   PhylomeDB; Q0WWE3; -.
DR   PRO; PR:Q0WWE3; -.
DR   Proteomes; UP000006548; Chromosome 1.
DR   ExpressionAtlas; Q0WWE3; baseline and differential.
DR   GO; GO:0005750; C:mitochondrial respiratory chain complex III; IEA:InterPro.
DR   GO; GO:0006122; P:mitochondrial electron transport, ubiquinol to cytochrome c; IEA:InterPro.
DR   Gene3D; 1.10.287.20; -; 1.
DR   InterPro; IPR003422; Cyt_b-c1_6.
DR   InterPro; IPR023184; Ubol_cytC_Rdtase_hinge_dom.
DR   InterPro; IPR036811; Ubol_cytC_Rdtase_hinge_dom_sf.
DR   PANTHER; PTHR15336; PTHR15336; 1.
DR   Pfam; PF02320; UCR_hinge; 1.
DR   PIRSF; PIRSF000019; Bc1_11K; 1.
DR   SUPFAM; SSF81531; SSF81531; 1.
PE   1: Evidence at protein level;
KW   Disulfide bond; Electron transport; Membrane; Mitochondrion;
KW   Mitochondrion inner membrane; Reference proteome; Respiratory chain;
KW   Transport.
FT   CHAIN           1..69
FT                   /note="Cytochrome b-c1 complex subunit 6-1, mitochondrial"
FT                   /id="PRO_0000449256"
FT   DISULFID        17..59
FT                   /evidence="ECO:0000255|PIRSR:PIRSR000019-1"
FT   DISULFID        31..45
FT                   /evidence="ECO:0000255|PIRSR:PIRSR000019-1"
FT   CONFLICT        37
FT                   /note="G -> S (in Ref. 6; AAM63085)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   69 AA;  7983 MW;  B86C249474155C11 CRC64;
     MADDEVVDPK KYLEESCKPK CVKPLLEYQA CVKRIQGDDS GHKHCTGQYF DYWQCIDKCV
     APKLFAKLK
 
 
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