ID   Q6CQ12_KLULA            Unreviewed;       254 AA.
AC   Q6CQ12;
DT   16-AUG-2004, integrated into UniProtKB/TrEMBL.
DT   16-AUG-2004, sequence version 1.
DT   24-JAN-2024, entry version 133.
DE   RecName: Full=Succinate dehydrogenase [ubiquinone] iron-sulfur subunit, mitochondrial {ECO:0000256|ARBA:ARBA00016766, ECO:0000256|RuleBase:RU361237};
DE            EC=1.3.5.1 {ECO:0000256|ARBA:ARBA00012792, ECO:0000256|RuleBase:RU361237};
GN   ORFNames=KLLA0_E00683g {ECO:0000313|EMBL:CAG99064.1};
OS   Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 /
OS   NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX   NCBI_TaxID=284590 {ECO:0000313|EMBL:CAG99064.1, ECO:0000313|Proteomes:UP000000598};
RN   [1] {ECO:0000313|EMBL:CAG99064.1, ECO:0000313|Proteomes:UP000000598}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 /
RC   WM37 {ECO:0000313|Proteomes:UP000000598};
RX   PubMed=15229592; DOI=10.1038/nature02579;
RG   Genolevures;
RA   Dujon B., Sherman D., Fischer G., Durrens P., Casaregola S., Lafontaine I.,
RA   de Montigny J., Marck C., Neuveglise C., Talla E., Goffard N., Frangeul L.,
RA   Aigle M., Anthouard V., Babour A., Barbe V., Barnay S., Blanchin S.,
RA   Beckerich J.M., Beyne E., Bleykasten C., Boisrame A., Boyer J.,
RA   Cattolico L., Confanioleri F., de Daruvar A., Despons L., Fabre E.,
RA   Fairhead C., Ferry-Dumazet H., Groppi A., Hantraye F., Hennequin C.,
RA   Jauniaux N., Joyet P., Kachouri R., Kerrest A., Koszul R., Lemaire M.,
RA   Lesur I., Ma L., Muller H., Nicaud J.M., Nikolski M., Oztas S.,
RA   Ozier-Kalogeropoulos O., Pellenz S., Potier S., Richard G.F., Straub M.L.,
RA   Suleau A., Swennene D., Tekaia F., Wesolowski-Louvel M., Westhof E.,
RA   Wirth B., Zeniou-Meyer M., Zivanovic I., Bolotin-Fukuhara M., Thierry A.,
RA   Bouchier C., Caudron B., Scarpelli C., Gaillardin C., Weissenbach J.,
RA   Wincker P., Souciet J.L.;
RT   "Genome evolution in yeasts.";
RL   Nature 430:35-44(2004).
CC   -!- FUNCTION: Iron-sulfur protein (IP) subunit of succinate dehydrogenase
CC       (SDH) that is involved in complex II of the mitochondrial electron
CC       transport chain and is responsible for transferring electrons from
CC       succinate to ubiquinone (coenzyme Q). {ECO:0000256|RuleBase:RU361237}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a quinone + succinate = a quinol + fumarate;
CC         Xref=Rhea:RHEA:40523, ChEBI:CHEBI:24646, ChEBI:CHEBI:29806,
CC         ChEBI:CHEBI:30031, ChEBI:CHEBI:132124; EC=1.3.5.1;
CC         Evidence={ECO:0000256|ARBA:ARBA00000030};
CC   -!- COFACTOR:
CC       Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC         Evidence={ECO:0000256|RuleBase:RU361237};
CC       Note=Binds 1 [2Fe-2S] cluster. {ECO:0000256|RuleBase:RU361237};
CC   -!- COFACTOR:
CC       Name=[3Fe-4S] cluster; Xref=ChEBI:CHEBI:21137;
CC         Evidence={ECO:0000256|RuleBase:RU361237};
CC       Note=Binds 1 [3Fe-4S] cluster. {ECO:0000256|RuleBase:RU361237};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000256|RuleBase:RU361237};
CC       Note=Binds 1 [4Fe-4S] cluster. {ECO:0000256|RuleBase:RU361237};
CC   -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; fumarate
CC       from succinate (eukaryal route): step 1/1.
CC       {ECO:0000256|ARBA:ARBA00004788, ECO:0000256|RuleBase:RU361237}.
CC   -!- SUBUNIT: Component of complex II composed of four subunits: a
CC       flavoprotein (FP), an iron-sulfur protein (IP), and a cytochrome b
CC       composed of a large and a small subunit.
CC       {ECO:0000256|ARBA:ARBA00011421}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000256|ARBA:ARBA00004443, ECO:0000256|RuleBase:RU361237};
CC       Peripheral membrane protein {ECO:0000256|ARBA:ARBA00004443,
CC       ECO:0000256|RuleBase:RU361237}; Matrix side
CC       {ECO:0000256|ARBA:ARBA00004443, ECO:0000256|RuleBase:RU361237}.
CC   -!- SIMILARITY: Belongs to the succinate dehydrogenase/fumarate reductase
CC       iron-sulfur protein family. {ECO:0000256|ARBA:ARBA00009433,
CC       ECO:0000256|RuleBase:RU361237}.
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DR   EMBL; CR382125; CAG99064.1; -; Genomic_DNA.
DR   RefSeq; XP_453977.1; XM_453977.1.
DR   AlphaFoldDB; Q6CQ12; -.
DR   STRING; 284590.Q6CQ12; -.
DR   PaxDb; 284590-Q6CQ12; -.
DR   GeneID; 2893808; -.
DR   KEGG; kla:KLLA0_E00683g; -.
DR   eggNOG; KOG3049; Eukaryota.
DR   HOGENOM; CLU_044838_0_2_1; -.
DR   InParanoid; Q6CQ12; -.
DR   OMA; DGQYFGP; -.
DR   UniPathway; UPA00223; UER01006.
DR   Proteomes; UP000000598; Chromosome E.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0051538; F:3 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR   GO; GO:0102040; F:fumarate reductase (menaquinone); IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0008177; F:succinate dehydrogenase (ubiquinone) activity; IEA:UniProtKB-EC.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniPathway.
DR   CDD; cd00207; fer2; 1.
DR   Gene3D; 3.10.20.30; -; 1.
DR   Gene3D; 1.10.1060.10; Alpha-helical ferredoxin; 1.
DR   InterPro; IPR036010; 2Fe-2S_ferredoxin-like_sf.
DR   InterPro; IPR001041; 2Fe-2S_ferredoxin-type.
DR   InterPro; IPR006058; 2Fe2S_fd_BS.
DR   InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR   InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR   InterPro; IPR012675; Beta-grasp_dom_sf.
DR   InterPro; IPR009051; Helical_ferredxn.
DR   InterPro; IPR004489; Succ_DH/fum_Rdtase_Fe-S.
DR   InterPro; IPR025192; Succ_DH/fum_Rdtase_N.
DR   NCBIfam; TIGR00384; dhsB; 1.
DR   PANTHER; PTHR11921:SF29; SUCCINATE DEHYDROGENASE [UBIQUINONE] IRON-SULFUR SUBUNIT, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR11921; SUCCINATE DEHYDROGENASE IRON-SULFUR PROTEIN; 1.
DR   Pfam; PF13085; Fer2_3; 1.
DR   Pfam; PF13534; Fer4_17; 1.
DR   SUPFAM; SSF54292; 2Fe-2S ferredoxin-like; 1.
DR   SUPFAM; SSF46548; alpha-helical ferredoxin; 1.
DR   PROSITE; PS00197; 2FE2S_FER_1; 1.
DR   PROSITE; PS51085; 2FE2S_FER_2; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 1.
DR   PROSITE; PS51379; 4FE4S_FER_2; 1.
PE   3: Inferred from homology;
KW   2Fe-2S {ECO:0000256|ARBA:ARBA00022714, ECO:0000256|RuleBase:RU361237};
KW   3Fe-4S {ECO:0000256|ARBA:ARBA00023291, ECO:0000256|RuleBase:RU361237};
KW   4Fe-4S {ECO:0000256|RuleBase:RU361237};
KW   Iron {ECO:0000256|RuleBase:RU361237};
KW   Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|RuleBase:RU361237};
KW   Membrane {ECO:0000256|RuleBase:RU361237};
KW   Metal-binding {ECO:0000256|RuleBase:RU361237};
KW   Mitochondrion {ECO:0000256|RuleBase:RU361237};
KW   Mitochondrion inner membrane {ECO:0000256|RuleBase:RU361237};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002};
KW   Reference proteome {ECO:0000313|Proteomes:UP000000598};
KW   Tricarboxylic acid cycle {ECO:0000256|ARBA:ARBA00022532}.
FT   DOMAIN          24..115
FT                   /note="2Fe-2S ferredoxin-type"
FT                   /evidence="ECO:0000259|PROSITE:PS51085"
FT   DOMAIN          157..187
FT                   /note="4Fe-4S ferredoxin-type"
FT                   /evidence="ECO:0000259|PROSITE:PS51379"
SQ   SEQUENCE   254 AA;  29052 MW;  E52EBD2E0EDF940A CRC64;
     MFNAIIKRGL ATEAKAVAPR LKTFKIYRWS PDRPAEKPRL QEYQVDLNQC GPMVLDALIK
     IKNEQDATLT FRRSCREGIC GSCAMNIGGR NTLACLCRID QNENKQTKIY PLPHMYIVRD
     LVPDLTHFYK QYKSIQPYLQ RSEVPADGKE NLQSIADRKK LDGLYECILC ACCSTSCPSY
     WWNQEQYLGP AVLMQAYRWL VDSRDEAAGI RKQMLQNSMS LYRCHTIMNC TRTCPKGLNP
     GRAIAEIKKA LAVD
//