ID   RIBL_THEKO              Reviewed;         149 AA.
AC   Q5JHT4;
DT   05-APR-2011, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=FAD synthase {ECO:0000255|HAMAP-Rule:MF_02115};
DE            EC=2.7.7.2 {ECO:0000255|HAMAP-Rule:MF_02115};
DE   AltName: Full=FMN adenylyltransferase {ECO:0000255|HAMAP-Rule:MF_02115};
DE   AltName: Full=Flavin adenine dinucleotide synthase {ECO:0000255|HAMAP-Rule:MF_02115};
GN   Name=ribL {ECO:0000255|HAMAP-Rule:MF_02115}; OrderedLocusNames=TK2274;
OS   Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
OS   (Pyrococcus kodakaraensis (strain KOD1)).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Thermococcus.
OX   NCBI_TaxID=69014;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-918 / JCM 12380 / KOD1;
RX   PubMed=15710748; DOI=10.1101/gr.3003105;
RA   Fukui T., Atomi H., Kanai T., Matsumi R., Fujiwara S., Imanaka T.;
RT   "Complete genome sequence of the hyperthermophilic archaeon Thermococcus
RT   kodakaraensis KOD1 and comparison with Pyrococcus genomes.";
RL   Genome Res. 15:352-363(2005).
CC   -!- FUNCTION: Catalyzes the transfer of the AMP portion of ATP to flavin
CC       mononucleotide (FMN) to produce flavin adenine dinucleotide (FAD)
CC       coenzyme. {ECO:0000255|HAMAP-Rule:MF_02115}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + FMN + H(+) = diphosphate + FAD; Xref=Rhea:RHEA:17237,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:57692, ChEBI:CHEBI:58210; EC=2.7.7.2;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02115};
CC   -!- COFACTOR:
CC       Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02115};
CC   -!- PATHWAY: Cofactor biosynthesis; FAD biosynthesis; FAD from FMN: step
CC       1/1. {ECO:0000255|HAMAP-Rule:MF_02115}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_02115}.
CC   -!- SIMILARITY: Belongs to the archaeal FAD synthase family.
CC       {ECO:0000255|HAMAP-Rule:MF_02115}.
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DR   EMBL; AP006878; BAD86463.1; -; Genomic_DNA.
DR   RefSeq; WP_011251224.1; NC_006624.1.
DR   AlphaFoldDB; Q5JHT4; -.
DR   SMR; Q5JHT4; -.
DR   STRING; 69014.TK2274; -.
DR   EnsemblBacteria; BAD86463; BAD86463; TK2274.
DR   GeneID; 3234716; -.
DR   KEGG; tko:TK2274; -.
DR   PATRIC; fig|69014.16.peg.2229; -.
DR   eggNOG; arCOG01222; Archaea.
DR   HOGENOM; CLU_034585_2_1_2; -.
DR   InParanoid; Q5JHT4; -.
DR   OMA; FAKKHAD; -.
DR   OrthoDB; 79845at2157; -.
DR   PhylomeDB; Q5JHT4; -.
DR   UniPathway; UPA00277; UER00407.
DR   Proteomes; UP000000536; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003919; F:FMN adenylyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006747; P:FAD biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0046444; P:FMN metabolic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.620; -; 1.
DR   HAMAP; MF_02115; FAD_synth_arch; 1.
DR   InterPro; IPR004821; Cyt_trans-like.
DR   InterPro; IPR024902; FAD_synth_RibL.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   Pfam; PF01467; CTP_transf_like; 1.
DR   TIGRFAMs; TIGR00125; cyt_tran_rel; 1.
PE   3: Inferred from homology;
KW   ATP-binding; FAD; Flavoprotein; FMN; Nucleotide-binding;
KW   Nucleotidyltransferase; Reference proteome; Transferase.
FT   CHAIN           1..149
FT                   /note="FAD synthase"
FT                   /id="PRO_0000406282"
FT   BINDING         15..16
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         20..23
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         101
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
SQ   SEQUENCE   149 AA;  17304 MW;  5D0C81C1322844C3 CRC64;
     MEEKRKKIRV LVGGVFDILH VGHIHFLKQA KELGDELVVI VAHDETVRMQ KRREPINPAE
     DRAELLRAIR YVDEVYIGTP GTIDMELVKR IDPDVIAIGP DQFFNCEKLK EELRKHGINA
     EVIRIPYLYK SDRAKTSKII QRIVETFCE