ID   RIBL_METMS              Reviewed;         142 AA.
AC   D5EBS7;
DT   05-APR-2011, integrated into UniProtKB/Swiss-Prot.
DT   15-JUN-2010, sequence version 1.
DT   03-AUG-2022, entry version 56.
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=Mmah_1121;
OS   Methanohalophilus mahii (strain ATCC 35705 / DSM 5219 / SLP).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanohalophilus.
OX   NCBI_TaxID=547558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35705 / DSM 5219 / SLP;
RG   US DOE Joint Genome Institute (JGI-PGF);
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Kyrpides N., Mavromatis K., Ivanova N.,
RA   Lykidis A., Saunders E., Brettin T., Detter J.C., Han C., Land M.,
RA   Hauser L., Markowitz V., Cheng J.-F., Hugenholtz P., Woyke T., Wu D.,
RA   Spring S., Schneider S., Schroeder M., Klenk H.-P., Eisen J.A.;
RT   "The complete genome of Methanohalophilus mahii DSM 5219.";
RL   Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
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; CP001994; ADE36628.1; -; Genomic_DNA.
DR   RefSeq; WP_013037571.1; NC_014002.1.
DR   AlphaFoldDB; D5EBS7; -.
DR   SMR; D5EBS7; -.
DR   STRING; 547558.Mmah_1121; -.
DR   EnsemblBacteria; ADE36628; ADE36628; Mmah_1121.
DR   GeneID; 8983288; -.
DR   KEGG; mmh:Mmah_1121; -.
DR   HOGENOM; CLU_034585_2_1_2; -.
DR   OMA; FAKKHAD; -.
DR   OrthoDB; 79845at2157; -.
DR   UniPathway; UPA00277; UER00407.
DR   Proteomes; UP000001059; 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..142
FT                   /note="FAD synthase"
FT                   /id="PRO_0000406263"
FT   BINDING         9..10
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         14..17
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         92
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
SQ   SEQUENCE   142 AA;  16484 MW;  D08690A95B8929B3 CRC64;
     MTRILATGTF DILHPGHLYY LEQARKYGNE LYVLVARDST IEHKPKPIVP EKQRLEMVKA
     LRVVDHALLG SEEDMFKPLK EVQPDIIVLG HDQVFDEKEL EDKLQKRGFN TKVVRLGKPH
     QCTLCSSGRI IKRILERKRT EL