ID A8XV72_CAEBR Unreviewed; 451 AA.
AC A8XV72;
DT 15-JAN-2008, integrated into UniProtKB/TrEMBL.
DT 16-DEC-2008, sequence version 2.
DT 27-MAR-2024, entry version 81.
DE RecName: Full=Ubiquinone biosynthesis monooxygenase COQ6, mitochondrial {ECO:0000256|HAMAP-Rule:MF_03193};
DE EC=1.14.13.- {ECO:0000256|HAMAP-Rule:MF_03193};
GN Name=coq-6 {ECO:0000256|HAMAP-Rule:MF_03193,
GN ECO:0000313|WormBase:CBG19254};
GN Synonyms=Cbr-coq-6 {ECO:0000313|EMBL:CAP36539.2};
GN ORFNames=CBG19254 {ECO:0000313|WormBase:CBG19254}, CBG_19254
GN {ECO:0000313|EMBL:CAP36539.2};
OS Caenorhabditis briggsae.
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Rhabditina; Rhabditomorpha; Rhabditoidea; Rhabditidae; Peloderinae;
OC Caenorhabditis.
OX NCBI_TaxID=6238 {ECO:0000313|EMBL:CAP36539.2, ECO:0000313|Proteomes:UP000008549};
RN [1] {ECO:0000313|EMBL:CAP36539.2, ECO:0000313|Proteomes:UP000008549}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AF16 {ECO:0000313|EMBL:CAP36539.2,
RC ECO:0000313|Proteomes:UP000008549};
RX PubMed=14624247; DOI=10.1371/journal.pbio.0000045;
RA Stein L.D., Bao Z., Blasiar D., Blumenthal T., Brent M.R., Chen N.,
RA Chinwalla A., Clarke L., Clee C., Coghlan A., Coulson A., D'Eustachio P.,
RA Fitch D.H., Fulton L.A., Fulton R.E., Griffiths-Jones S., Harris T.W.,
RA Hillier L.W., Kamath R., Kuwabara P.E., Mardis E.R., Marra M.A.,
RA Miner T.L., Minx P., Mullikin J.C., Plumb R.W., Rogers J., Schein J.E.,
RA Sohrmann M., Spieth J., Stajich J.E., Wei C., Willey D., Wilson R.K.,
RA Durbin R., Waterston R.H.;
RT "The genome sequence of Caenorhabditis briggsae: a platform for comparative
RT genomics.";
RL PLoS Biol. 1:166-192(2003).
CC -!- FUNCTION: FAD-dependent monooxygenase required for the C5-ring
CC hydroxylation during ubiquinone biosynthesis. Catalyzes the
CC hydroxylation of 3-polyprenyl-4-hydroxybenzoic acid to 3-
CC polyprenyl-4,5-dihydroxybenzoic acid. The electrons required for the
CC hydroxylation reaction may be funneled indirectly from NADPH via a
CC ferredoxin/ferredoxin reductase system to COQ6. {ECO:0000256|HAMAP-
CC Rule:MF_03193}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=4-hydroxy-3-all-trans-hexaprenylbenzoate + 2 H(+) + O2 + 2
CC reduced [2Fe-2S]-[ferredoxin] = 3,4-dihydroxy-5-all-trans-
CC hexaprenylbenzoate + H2O + 2 oxidized [2Fe-2S]-[ferredoxin];
CC Xref=Rhea:RHEA:20361, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:33737, ChEBI:CHEBI:33738, ChEBI:CHEBI:58373,
CC ChEBI:CHEBI:84492; Evidence={ECO:0000256|HAMAP-Rule:MF_03193};
CC -!- COFACTOR:
CC Name=FAD; Xref=ChEBI:CHEBI:57692;
CC Evidence={ECO:0000256|ARBA:ARBA00001974,
CC ECO:0000256|HAMAP-Rule:MF_03193};
CC -!- PATHWAY: Cofactor biosynthesis; ubiquinone biosynthesis.
CC {ECO:0000256|HAMAP-Rule:MF_03193}.
CC -!- SUBUNIT: Component of a multi-subunit COQ enzyme complex.
CC {ECO:0000256|HAMAP-Rule:MF_03193}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane {ECO:0000256|HAMAP-
CC Rule:MF_03193}; Peripheral membrane protein {ECO:0000256|HAMAP-
CC Rule:MF_03193}; Matrix side {ECO:0000256|HAMAP-Rule:MF_03193}.
CC -!- SIMILARITY: Belongs to the UbiH/COQ6 family.
CC {ECO:0000256|ARBA:ARBA00005349, ECO:0000256|HAMAP-Rule:MF_03193}.
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DR EMBL; HE601047; CAP36539.2; -; Genomic_DNA.
DR AlphaFoldDB; A8XV72; -.
DR STRING; 6238.A8XV72; -.
DR EnsemblMetazoa; CBG19254.1; CBG19254.1; WBGene00038510.
DR WormBase; CBG19254; CBP35767; WBGene00038510; Cbr-coq-6.
DR eggNOG; KOG3855; Eukaryota.
DR HOGENOM; CLU_009665_8_0_1; -.
DR InParanoid; A8XV72; -.
DR OMA; VKQMQVW; -.
DR OrthoDB; 5473786at2759; -.
DR UniPathway; UPA00232; -.
DR Proteomes; UP000008549; Unassembled WGS sequence.
DR GO; GO:0031314; C:extrinsic component of mitochondrial inner membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0005739; C:mitochondrion; IBA:GO_Central.
DR GO; GO:0008681; F:2-octaprenyl-6-methoxyphenol hydroxylase activity; IEA:InterPro.
DR GO; GO:0106364; F:4-hydroxy-3-all-trans-hexaprenylbenzoate oxygenase activity; IEA:RHEA.
DR GO; GO:0071949; F:FAD binding; IEA:InterPro.
DR GO; GO:0016491; F:oxidoreductase activity; IBA:GO_Central.
DR GO; GO:0016709; F:oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen; IEA:InterPro.
DR GO; GO:0006744; P:ubiquinone biosynthetic process; IBA:GO_Central.
DR Gene3D; 3.50.50.60; FAD/NAD(P)-binding domain; 2.
DR HAMAP; MF_03193; COQ6_monooxygenase; 1.
DR InterPro; IPR002938; FAD-bd.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR InterPro; IPR018168; Ubi_Hdrlase_CS.
DR InterPro; IPR010971; UbiH/COQ6.
DR InterPro; IPR000689; UbQ_mOase_COQ6.
DR NCBIfam; TIGR01989; COQ6; 1.
DR NCBIfam; TIGR01988; Ubi-OHases; 1.
DR PANTHER; PTHR43876; UBIQUINONE BIOSYNTHESIS MONOOXYGENASE COQ6, MITOCHONDRIAL; 1.
DR PANTHER; PTHR43876:SF7; UBIQUINONE BIOSYNTHESIS MONOOXYGENASE COQ6, MITOCHONDRIAL; 1.
DR Pfam; PF01494; FAD_binding_3; 2.
DR PRINTS; PR00420; RNGMNOXGNASE.
DR SUPFAM; SSF51905; FAD/NAD(P)-binding domain; 1.
DR PROSITE; PS01304; UBIH; 1.
PE 3: Inferred from homology;
KW FAD {ECO:0000256|HAMAP-Rule:MF_03193};
KW Flavoprotein {ECO:0000256|HAMAP-Rule:MF_03193};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_03193};
KW Mitochondrion {ECO:0000256|HAMAP-Rule:MF_03193};
KW Mitochondrion inner membrane {ECO:0000256|ARBA:ARBA00022792,
KW ECO:0000256|HAMAP-Rule:MF_03193};
KW Monooxygenase {ECO:0000256|ARBA:ARBA00023033, ECO:0000256|HAMAP-
KW Rule:MF_03193};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_03193}; Reference proteome {ECO:0000313|Proteomes:UP000008549};
KW Ubiquinone biosynthesis {ECO:0000256|ARBA:ARBA00022688, ECO:0000256|HAMAP-
KW Rule:MF_03193}.
FT DOMAIN 18..275
FT /note="FAD-binding"
FT /evidence="ECO:0000259|Pfam:PF01494"
FT DOMAIN 311..390
FT /note="FAD-binding"
FT /evidence="ECO:0000259|Pfam:PF01494"
SQ SEQUENCE 451 AA; 49146 MW; 8EC603C17E0A88E5 CRC64;
MKLPGGTIIC AKNASSYYDA VIVGGGMVGN AMACSLGANK SFQSKRVLLL DAGRSPSLSS
FESGAPFNNR VVATSPTSID IFKKLGVWER INSHRAKKVN RLFVFDSCST SEIEFERGQN
EEVAYIIEND LIVGSLYEKL ADYKNVDVKT GAKVEVCFIP NGLENMATIK LENGDVIETS
LLIGADGVNS KVRHASNVDY TTFNYNQHGL VGIVNIETAN GKNETAWQRF TTLGPVALLP
LSDTISGLTW STSPEEAQRL KQLPADQFVD ELNSALFSQD DQLPYVNQAI FALNKMNPFR
TETFGRKAEG TTPPHIISVQ DKSRASFPLG FGNAHSYITT RCALIGDAAH RMHPLAGQGV
NLGWSDVQIL DKILGDAVRE GADIGSITYL REYDSAAQKH NLPVMVSVDL LNRIYRTDAP
AIVAARAFGL NAFNSLGPVK NFLMNYLSAH R
//
