ID   UCRI4_TOBAC             Reviewed;         236 AA.
AC   P51134;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   16-JUN-2009, entry version 61.
DE   RecName: Full=Cytochrome b-c1 complex subunit Rieske-4, mitochondrial;
DE            EC=1.10.2.2;
DE   AltName: Full=Ubiquinol-cytochrome c reductase iron-sulfur subunit 4;
DE   AltName: Full=Rieske iron-sulfur protein 4;
DE            Short=RISP4;
DE   AltName: Full=Complex III subunit 5-4;
DE   Flags: Precursor;
OS   Nicotiana tabacum (Common tobacco).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliophyta; eudicotyledons; core eudicotyledons;
OC   asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC   Nicotiana.
OX   NCBI_TaxID=4097;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=cv. SC58; TISSUE=Flower;
RX   MEDLINE=94235987; PubMed=8180500; DOI=10.1105/tpc.6.3.439;
RA   Huang J., Struck F., Matzinger D.F., Levings C.S. III;
RT   "Flower-enhanced expression of a nuclear-encoded mitochondrial
RT   respiratory protein is associated with changes in mitochondrion
RT   number.";
RL   Plant Cell 6:439-448(1994).
CC   -!- FUNCTION: Component of the ubiquinol-cytochrome c reductase
CC       complex (complex III or cytochrome b-c1 complex), which is a
CC       respiratory chain that generates an electrochemical potential
CC       coupled to ATP synthesis.
CC   -!- CATALYTIC ACTIVITY: QH(2) + 2 ferricytochrome c = Q + 2
CC       ferrocytochrome c + 2 H(+).
CC   -!- COFACTOR: Binds 1 2Fe-2S cluster per subunit (By similarity).
CC   -!- SUBUNIT: The bc1 complex contains 10 subunits; 3 respiratory
CC       subunits, 2 core proteins and 5 low-molecular weight proteins.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane.
CC   -!- MISCELLANEOUS: The Rieske protein is a high potential 2Fe-2S
CC       protein.
CC   -!- SIMILARITY: Contains 1 Rieske domain.
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DR   EMBL; L16812; AAA20833.1; -; mRNA.
DR   PIR; T02020; T02020.
DR   HSSP; P13272; 1RIE.
DR   BRENDA; 1.10.2.2; 298.
DR   GO; GO:0016021; C:integral to membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0070469; C:respiratory chain; IEA:UniProtKB-KW.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron carrier activity; IEA:InterPro.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0008121; F:ubiquinol-cytochrome-c reductase activity; IEA:EC.
DR   GO; GO:0022900; P:electron transport chain; IEA:UniProtKB-KW.
DR   GO; GO:0006810; P:transport; IEA:UniProtKB-KW.
DR   InterPro; IPR017941; Rieske_2Fe-2S.
DR   InterPro; IPR014349; Rieske_Fe-S_prot.
DR   InterPro; IPR006317; Ubiquinol_cyt_c_Rdtase_Fe-S-su.
DR   InterPro; IPR004192; Ubiquinol_cyt_Rdtase_TM.
DR   Gene3D; G3DSA:2.102.10.10; Rieske_reg; 1.
DR   PANTHER; PTHR10134; Rieske; 1.
DR   Pfam; PF00355; Rieske; 1.
DR   Pfam; PF02921; UCR_TM; 1.
DR   TIGRFAMs; TIGR01416; Rieske_proteo; 1.
DR   PROSITE; PS51296; RIESKE; 1.
PE   2: Evidence at transcript level;
KW   2Fe-2S; Disulfide bond; Electron transport; Iron; Iron-sulfur;
KW   Membrane; Metal-binding; Mitochondrion; Mitochondrion inner membrane;
KW   Oxidoreductase; Respiratory chain; Transit peptide; Transmembrane;
KW   Transport.
FT   TRANSIT       1     24       Mitochondrion (Potential).
FT   CHAIN        25    236       Cytochrome b-c1 complex subunit Rieske-4,
FT                                mitochondrial.
FT                                /FTId=PRO_0000030679.
FT   DOMAIN      146    234       Rieske.
FT   METAL       179    179       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       181    181       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   METAL       198    198       Iron-sulfur (2Fe-2S) (By similarity).
FT   METAL       201    201       Iron-sulfur (2Fe-2S); via pros nitrogen
FT                                (By similarity).
FT   DISULFID    184    200       By similarity.
SQ   SEQUENCE   236 AA;  25822 MW;  AEDFC23B7EE40D0F CRC64;
     MINFGSCWGL ASVTSNSFSI ISGFSSNSVS HAHDMGLVPD LPPTVAAIKN PTSKIVYDEH
     NHERYPPGDP SKRAFAYFVL TGGRFVYASL VRLLILKFVL SMSASKDVLA LASLEVDLSS
     IEPGTTVTVK WRGKPVFIRR RTEDDINLAN SVDLGSLRDP QQDAERVKSP EWLVVIGVCT
     HLGCIPLPNA GDFGGWFCPC HGSHYDISGR IRKGPAPYNL EVPTYSFLEE NKLLIG
//