ID   RIBL_METRM              Reviewed;         150 AA.
AC   D3DZ18;
DT   05-APR-2011, integrated into UniProtKB/Swiss-Prot.
DT   23-MAR-2010, sequence version 1.
DT   03-AUG-2022, entry version 58.
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=mru_1718;
OS   Methanobrevibacter ruminantium (strain ATCC 35063 / DSM 1093 / JCM 13430 /
OS   OCM 146 / M1) (Methanobacterium ruminantium).
OC   Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC   Methanobacteriales; Methanobacteriaceae; Methanobrevibacter.
OX   NCBI_TaxID=634498;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35063 / DSM 1093 / JCM 13430 / OCM 146 / M1;
RX   PubMed=20126622; DOI=10.1371/journal.pone.0008926;
RA   Leahy S.C., Kelly W.J., Altermann E., Ronimus R.S., Yeoman C.J.,
RA   Pacheco D.M., Li D., Kong Z., McTavish S., Sang C., Lambie S.C.,
RA   Janssen P.H., Dey D., Attwood G.T.;
RT   "The genome sequence of the rumen methanogen Methanobrevibacter ruminantium
RT   reveals new possibilities for controlling ruminant methane emissions.";
RL   PLoS ONE 5:E8926-E8926(2010).
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; CP001719; ADC47568.1; -; Genomic_DNA.
DR   AlphaFoldDB; D3DZ18; -.
DR   SMR; D3DZ18; -.
DR   STRING; 634498.mru_1718; -.
DR   PRIDE; D3DZ18; -.
DR   EnsemblBacteria; ADC47568; ADC47568; mru_1718.
DR   KEGG; mru:mru_1718; -.
DR   PATRIC; fig|634498.28.peg.1719; -.
DR   eggNOG; arCOG01222; Archaea.
DR   HOGENOM; CLU_034585_2_1_2; -.
DR   OMA; FAKKHAD; -.
DR   UniPathway; UPA00277; UER00407.
DR   Proteomes; UP000008680; 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..150
FT                   /note="FAD synthase"
FT                   /id="PRO_0000406245"
FT   BINDING         8..9
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         13..16
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         95
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
FT   BINDING         122
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02115"
SQ   SEQUENCE   150 AA;  16979 MW;  13F291B37F32730C CRC64;
     MKVMATGAFD ILHPGHGLYL EKAKELGGED AVLAVVIARD STVKKKKRIP VIDENQRLEM
     IKYLKPVDEA YIGHDGDMFE IVEEIKPDII AIGFDQGHDV NKLQEELDKR GIKAKAMRVE
     AHRIADLDST CKIIKKIRNS DFEEDYVNCD