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Database: UniProt
Entry: P21911
LinkDB: P21911
Original site: P21911 
ID   SDHB_SCHPO              Reviewed;         275 AA.
AC   P21911; P21915;
DT   01-MAY-1991, integrated into UniProtKB/Swiss-Prot.
DT   13-JUN-2012, sequence version 3.
DT   24-JAN-2024, entry version 178.
DE   RecName: Full=Succinate dehydrogenase [ubiquinone] iron-sulfur subunit, mitochondrial;
DE            EC=1.3.5.1;
DE   AltName: Full=Iron-sulfur subunit of complex II;
DE            Short=Ip;
DE   Flags: Precursor;
GN   Name=sdh2; ORFNames=SPAC140.01;
OS   Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Taphrinomycotina;
OC   Schizosaccharomycetes; Schizosaccharomycetales; Schizosaccharomycetaceae;
OC   Schizosaccharomyces.
OX   NCBI_TaxID=284812;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=972 / ATCC 24843;
RX   PubMed=11859360; DOI=10.1038/nature724;
RA   Wood V., Gwilliam R., Rajandream M.A., Lyne M.H., Lyne R., Stewart A.,
RA   Sgouros J.G., Peat N., Hayles J., Baker S.G., Basham D., Bowman S.,
RA   Brooks K., Brown D., Brown S., Chillingworth T., Churcher C.M., Collins M.,
RA   Connor R., Cronin A., Davis P., Feltwell T., Fraser A., Gentles S.,
RA   Goble A., Hamlin N., Harris D.E., Hidalgo J., Hodgson G., Holroyd S.,
RA   Hornsby T., Howarth S., Huckle E.J., Hunt S., Jagels K., James K.D.,
RA   Jones L., Jones M., Leather S., McDonald S., McLean J., Mooney P.,
RA   Moule S., Mungall K.L., Murphy L.D., Niblett D., Odell C., Oliver K.,
RA   O'Neil S., Pearson D., Quail M.A., Rabbinowitsch E., Rutherford K.M.,
RA   Rutter S., Saunders D., Seeger K., Sharp S., Skelton J., Simmonds M.N.,
RA   Squares R., Squares S., Stevens K., Taylor K., Taylor R.G., Tivey A.,
RA   Walsh S.V., Warren T., Whitehead S., Woodward J.R., Volckaert G., Aert R.,
RA   Robben J., Grymonprez B., Weltjens I., Vanstreels E., Rieger M.,
RA   Schaefer M., Mueller-Auer S., Gabel C., Fuchs M., Duesterhoeft A.,
RA   Fritzc C., Holzer E., Moestl D., Hilbert H., Borzym K., Langer I., Beck A.,
RA   Lehrach H., Reinhardt R., Pohl T.M., Eger P., Zimmermann W., Wedler H.,
RA   Wambutt R., Purnelle B., Goffeau A., Cadieu E., Dreano S., Gloux S.,
RA   Lelaure V., Mottier S., Galibert F., Aves S.J., Xiang Z., Hunt C.,
RA   Moore K., Hurst S.M., Lucas M., Rochet M., Gaillardin C., Tallada V.A.,
RA   Garzon A., Thode G., Daga R.R., Cruzado L., Jimenez J., Sanchez M.,
RA   del Rey F., Benito J., Dominguez A., Revuelta J.L., Moreno S.,
RA   Armstrong J., Forsburg S.L., Cerutti L., Lowe T., McCombie W.R.,
RA   Paulsen I., Potashkin J., Shpakovski G.V., Ussery D., Barrell B.G.,
RA   Nurse P.;
RT   "The genome sequence of Schizosaccharomyces pombe.";
RL   Nature 415:871-880(2002).
RN   [2]
RP   REVISION OF GENE MODEL.
RX   PubMed=21511999; DOI=10.1126/science.1203357;
RA   Rhind N., Chen Z., Yassour M., Thompson D.A., Haas B.J., Habib N.,
RA   Wapinski I., Roy S., Lin M.F., Heiman D.I., Young S.K., Furuya K., Guo Y.,
RA   Pidoux A., Chen H.M., Robbertse B., Goldberg J.M., Aoki K., Bayne E.H.,
RA   Berlin A.M., Desjardins C.A., Dobbs E., Dukaj L., Fan L., FitzGerald M.G.,
RA   French C., Gujja S., Hansen K., Keifenheim D., Levin J.Z., Mosher R.A.,
RA   Mueller C.A., Pfiffner J., Priest M., Russ C., Smialowska A., Swoboda P.,
RA   Sykes S.M., Vaughn M., Vengrova S., Yoder R., Zeng Q., Allshire R.,
RA   Baulcombe D., Birren B.W., Brown W., Ekwall K., Kellis M., Leatherwood J.,
RA   Levin H., Margalit H., Martienssen R., Nieduszynski C.A., Spatafora J.W.,
RA   Friedman N., Dalgaard J.Z., Baumann P., Niki H., Regev A., Nusbaum C.;
RT   "Comparative functional genomics of the fission yeasts.";
RL   Science 332:930-936(2011).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 112-251.
RX   PubMed=2494655; DOI=10.1073/pnas.86.6.1934;
RA   Gould S.J., Subramani S., Scheffler I.E.;
RT   "Use of the DNA polymerase chain reaction for homology probing: isolation
RT   of partial cDNA or genomic clones encoding the iron-sulfur protein of
RT   succinate dehydrogenase from several species.";
RL   Proc. Natl. Acad. Sci. U.S.A. 86:1934-1938(1989).
RN   [4]
RP   ERRATUM OF PUBMED:2494655.
RA   Gould S.J., Subramani S., Scheffler I.E.;
RL   Proc. Natl. Acad. Sci. U.S.A. 90:2556-2556(1993).
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:0000250}.
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   -!- COFACTOR:
CC       Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135; Evidence={ECO:0000250};
CC       Note=Binds 1 [2Fe-2S] cluster. {ECO:0000250};
CC   -!- COFACTOR:
CC       Name=[3Fe-4S] cluster; Xref=ChEBI:CHEBI:21137; Evidence={ECO:0000250};
CC       Note=Binds 1 [3Fe-4S] cluster. {ECO:0000250};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000250};
CC       Note=Binds 1 [4Fe-4S] cluster. {ECO:0000250};
CC   -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; fumarate
CC       from succinate (eukaryal route): step 1/1.
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. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Matrix side {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the succinate dehydrogenase/fumarate reductase
CC       iron-sulfur protein family. {ECO:0000305}.
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DR   EMBL; CU329670; CAB86412.2; -; Genomic_DNA.
DR   PIR; D32394; D32394.
DR   PIR; T37633; T37633.
DR   RefSeq; NP_593530.2; NM_001018964.2.
DR   AlphaFoldDB; P21911; -.
DR   SMR; P21911; -.
DR   BioGRID; 279288; 2.
DR   ComplexPortal; CPX-566; Mitochondrial respiratory chain complex II.
DR   STRING; 284812.P21911; -.
DR   MaxQB; P21911; -.
DR   PaxDb; 4896-SPAC140-01-1; -.
DR   EnsemblFungi; SPAC140.01.1; SPAC140.01.1:pep; SPAC140.01.
DR   GeneID; 2542842; -.
DR   KEGG; spo:SPAC140.01; -.
DR   PomBase; SPAC140.01; sdh2.
DR   VEuPathDB; FungiDB:SPAC140.01; -.
DR   eggNOG; KOG3049; Eukaryota.
DR   HOGENOM; CLU_044838_0_0_1; -.
DR   InParanoid; P21911; -.
DR   OMA; DGQYFGP; -.
DR   Reactome; R-SPO-71403; Citric acid cycle (TCA cycle).
DR   UniPathway; UPA00223; UER01006.
DR   PRO; PR:P21911; -.
DR   Proteomes; UP000002485; Chromosome I.
DR   GO; GO:0005737; C:cytoplasm; HDA:PomBase.
DR   GO; GO:0005743; C:mitochondrial inner membrane; ISO:ComplexPortal.
DR   GO; GO:0031966; C:mitochondrial membrane; IBA:GO_Central.
DR   GO; GO:0005749; C:mitochondrial respiratory chain complex II, succinate dehydrogenase complex (ubiquinone); ISO:ComplexPortal.
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; ISS:PomBase.
DR   GO; GO:0009060; P:aerobic respiration; IBA:GO_Central.
DR   GO; GO:0006121; P:mitochondrial electron transport, succinate to ubiquinone; ISS:PomBase.
DR   GO; GO:0042776; P:proton motive force-driven mitochondrial ATP synthesis; ISO:ComplexPortal.
DR   GO; GO:0022904; P:respiratory electron transport chain; IBA:GO_Central.
DR   GO; GO:0006105; P:succinate metabolic process; ISS:PomBase.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; ISO:ComplexPortal.
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; 3Fe-4S; 4Fe-4S; Electron transport; Iron; Iron-sulfur; Membrane;
KW   Metal-binding; Mitochondrion; Mitochondrion inner membrane; Oxidoreductase;
KW   Reference proteome; Transit peptide; Transport; Tricarboxylic acid cycle.
FT   TRANSIT         1..24
FT                   /note="Mitochondrion"
FT                   /evidence="ECO:0000255"
FT   CHAIN           25..275
FT                   /note="Succinate dehydrogenase [ubiquinone] iron-sulfur
FT                   subunit, mitochondrial"
FT                   /id="PRO_0000010350"
FT   DOMAIN          57..137
FT                   /note="2Fe-2S ferredoxin-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT   DOMAIN          178..208
FT                   /note="4Fe-4S ferredoxin-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT   BINDING         98
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT   BINDING         103
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT   BINDING         106
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT   BINDING         118
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT   BINDING         188
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         191
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         194
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
FT   BINDING         198
FT                   /ligand="[3Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:21137"
FT                   /evidence="ECO:0000250"
FT   BINDING         203
FT                   /ligand="a ubiquinone"
FT                   /ligand_id="ChEBI:CHEBI:16389"
FT                   /ligand_note="ligand shared with DHSD"
FT                   /evidence="ECO:0000250"
FT   BINDING         245
FT                   /ligand="[3Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:21137"
FT                   /evidence="ECO:0000250"
FT   BINDING         251
FT                   /ligand="[3Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:21137"
FT                   /evidence="ECO:0000250"
FT   BINDING         255
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   275 AA;  31426 MW;  F44661005266A678 CRC64;
     MFSRRIQVLS PFLKHFVNRN ARMMATEANI SATSANPQSQ GENLKTFEIY RWNPEKPEVK
     PKLQKYTVDL TKCGPMVLDA LIKIKNEQDP TLTFRRSCRE GICGSCAMNI NGSNTLACIC
     NIKKDNKPTK IYPLPHCFIV KDLVPDLTYF YKQYKSIEPW LQNDNIPKDK EFYQSRADRA
     KLDGLYECIL CACCSTSCPS YWWNSEEYLG PAVLMQAYRW IIDSRDQATA KRLDVMQNSM
     SVYRCHTIMN CARTCPKGLN PGLAIAKVKA LMATA
//
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