ID SDHB_CAEEL Reviewed; 298 AA.
AC Q09545; O44075;
DT 01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-1996, sequence version 1.
DT 27-MAR-2024, entry version 162.
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=sdhb-1; Synonyms=tag-55; ORFNames=F42A8.2;
OS Caenorhabditis elegans.
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Rhabditina; Rhabditomorpha; Rhabditoidea; Rhabditidae; Peloderinae;
OC Caenorhabditis.
OX NCBI_TaxID=6239;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=10743611; DOI=10.1016/s0166-6851(99)00200-5;
RA Amino H., Wang H., Hirawake H., Saruta F., Mizuchi D., Mineki R.,
RA Shindo N., Murayama K., Takamiya S., Aoki T., Kojima S., Kita K.;
RT "Stage-specific isoforms of Ascaris suum complex. II: The fumarate
RT reductase of the parasitic adult and the succinate dehydrogenase of free-
RT living larvae share a common iron-sulfur subunit.";
RL Mol. Biochem. Parasitol. 106:63-76(2000).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Bristol N2;
RX PubMed=9851916; DOI=10.1126/science.282.5396.2012;
RG The C. elegans sequencing consortium;
RT "Genome sequence of the nematode C. elegans: a platform for investigating
RT biology.";
RL Science 282:2012-2018(1998).
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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=BAA23717.1; Type=Frameshift; Evidence={ECO:0000305};
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DR EMBL; AB008569; BAA23717.1; ALT_FRAME; mRNA.
DR EMBL; Z47809; CAA87780.1; -; Genomic_DNA.
DR PIR; T22083; T22083.
DR PIR; T37260; T37260.
DR RefSeq; NP_495992.1; NM_063591.6.
DR AlphaFoldDB; Q09545; -.
DR SMR; Q09545; -.
DR BioGRID; 39806; 38.
DR STRING; 6239.F42A8.2.2; -.
DR EPD; Q09545; -.
DR PaxDb; 6239-F42A8-2-1; -.
DR PeptideAtlas; Q09545; -.
DR EnsemblMetazoa; F42A8.2.1; F42A8.2.1; WBGene00006433.
DR GeneID; 174482; -.
DR KEGG; cel:CELE_F42A8.2; -.
DR AGR; WB:WBGene00006433; -.
DR WormBase; F42A8.2; CE01579; WBGene00006433; sdhb-1.
DR eggNOG; KOG3049; Eukaryota.
DR GeneTree; ENSGT00390000013558; -.
DR HOGENOM; CLU_044838_0_2_1; -.
DR InParanoid; Q09545; -.
DR OMA; DGQYFGP; -.
DR OrthoDB; 119960at2759; -.
DR PhylomeDB; Q09545; -.
DR BRENDA; 1.3.5.1; 1045.
DR Reactome; R-CEL-71403; Citric acid cycle (TCA cycle).
DR UniPathway; UPA00223; UER01006.
DR PRO; PR:Q09545; -.
DR Proteomes; UP000001940; Chromosome II.
DR Bgee; WBGene00006433; Expressed in material anatomical entity and 5 other cell types or tissues.
DR GO; GO:0005743; C:mitochondrial inner membrane; ISS:UniProtKB.
DR GO; GO:0031966; C:mitochondrial membrane; IBA:GO_Central.
DR GO; GO:0005749; C:mitochondrial respiratory chain complex II, succinate dehydrogenase complex (ubiquinone); ISS:UniProtKB.
DR GO; GO:0005739; C:mitochondrion; IDA:WormBase.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; ISS:UniProtKB.
DR GO; GO:0051538; F:3 iron, 4 sulfur cluster binding; ISS:UniProtKB.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; ISS:UniProtKB.
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:0048039; F:ubiquinone binding; ISS:UniProtKB.
DR GO; GO:0009060; P:aerobic respiration; IBA:GO_Central.
DR GO; GO:0022904; P:respiratory electron transport chain; IBA:GO_Central.
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 2: Evidence at transcript level;
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..?
FT /note="Mitochondrion"
FT /evidence="ECO:0000255"
FT CHAIN ?..298
FT /note="Succinate dehydrogenase [ubiquinone] iron-sulfur
FT subunit, mitochondrial"
FT /id="PRO_0000010354"
FT DOMAIN 59..147
FT /note="2Fe-2S ferredoxin-type"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00465"
FT DOMAIN 190..220
FT /note="4Fe-4S ferredoxin-type"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00711"
FT BINDING 107
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000250"
FT BINDING 112
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000250"
FT BINDING 115
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000250"
FT BINDING 127
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000250"
FT BINDING 200
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 203
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 206
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
FT BINDING 210
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
FT BINDING 215
FT /ligand="a ubiquinone"
FT /ligand_id="ChEBI:CHEBI:16389"
FT /ligand_note="ligand shared with DHSD"
FT /evidence="ECO:0000250"
FT BINDING 257
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
FT BINDING 263
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000250"
FT BINDING 267
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000250"
SQ SEQUENCE 298 AA; 32891 MW; 0FDD148A6C9AB824 CRC64;
MLARSARLLH SAELAANAIR AASGAPATAA AAEASFPSTD DVAAKTKKTG NRIKTFEIYR
FNPEAPGAKP TVQKFDVDLD QCGTMILDAL IKIKNEVDPT LTFRRSCREG ICGSCAMNIG
GQNTLACICK IDSDTSKSTK IYPLPHMFVV KDLVPDMNLF YAQYASIQPW IQKKTPLTLG
EKQMHQSVAE RDRLDGLYEC ILCACCSTSC PSYWWNADKY LGPAVLMQAY RWVIDSRDDY
ATERLHRMHD SFSAFKCHTI MNCTKTCPKH LNPAKAIGEI KSLLTGFTSK PAAEPSAF
//
