ID   B5Y236_KLEP3            Unreviewed;       312 AA.
AC   B5Y236;
DT   25-NOV-2008, integrated into UniProtKB/TrEMBL.
DT   25-NOV-2008, sequence version 1.
DT   27-MAR-2024, entry version 74.
DE   RecName: Full=Riboflavin biosynthesis protein {ECO:0000256|PIRNR:PIRNR004491};
DE   Includes:
DE     RecName: Full=Riboflavin kinase {ECO:0000256|PIRNR:PIRNR004491};
DE              EC=2.7.1.26 {ECO:0000256|PIRNR:PIRNR004491};
DE     AltName: Full=Flavokinase {ECO:0000256|PIRNR:PIRNR004491};
DE   Includes:
DE     RecName: Full=FMN adenylyltransferase {ECO:0000256|PIRNR:PIRNR004491};
DE              EC=2.7.7.2 {ECO:0000256|PIRNR:PIRNR004491};
DE     AltName: Full=FAD pyrophosphorylase {ECO:0000256|PIRNR:PIRNR004491};
DE     AltName: Full=FAD synthase {ECO:0000256|PIRNR:PIRNR004491};
GN   Name=ribF {ECO:0000313|EMBL:ACI10796.1};
GN   OrderedLocusNames=KPK_4736 {ECO:0000313|EMBL:ACI10796.1};
OS   Klebsiella pneumoniae (strain 342).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=507522 {ECO:0000313|EMBL:ACI10796.1, ECO:0000313|Proteomes:UP000001734};
RN   [1] {ECO:0000313|EMBL:ACI10796.1, ECO:0000313|Proteomes:UP000001734}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=342 {ECO:0000313|EMBL:ACI10796.1,
RC   ECO:0000313|Proteomes:UP000001734};
RX   PubMed=18654632; DOI=10.1371/journal.pgen.1000141;
RA   Fouts D.E., Tyler H.L., DeBoy R.T., Daugherty S., Ren Q., Badger J.H.,
RA   Durkin A.S., Huot H., Shrivastava S., Kothari S., Dodson R.J., Mohamoud Y.,
RA   Khouri H., Roesch L.F., Krogfelt K.A., Struve C., Triplett E.W.,
RA   Methe B.A.;
RT   "Complete genome sequence of the N2-fixing broad host range endophyte
RT   Klebsiella pneumoniae 342 and virulence predictions verified in mice.";
RL   PLoS Genet. 4:E1000141-E1000141(2008).
CC   -!- FUNCTION: Catalyzes the phosphorylation of riboflavin to FMN followed
CC       by the adenylation of FMN to FAD. {ECO:0000256|ARBA:ARBA00002121}.
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:0000256|ARBA:ARBA00001332,
CC         ECO:0000256|PIRNR:PIRNR004491};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + riboflavin = ADP + FMN + H(+); Xref=Rhea:RHEA:14357,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:57986,
CC         ChEBI:CHEBI:58210, ChEBI:CHEBI:456216; EC=2.7.1.26;
CC         Evidence={ECO:0000256|ARBA:ARBA00000372,
CC         ECO:0000256|PIRNR:PIRNR004491};
CC   -!- PATHWAY: Cofactor biosynthesis; FAD biosynthesis; FAD from FMN: step
CC       1/1. {ECO:0000256|ARBA:ARBA00004726, ECO:0000256|PIRNR:PIRNR004491}.
CC   -!- PATHWAY: Cofactor biosynthesis; FMN biosynthesis; FMN from riboflavin
CC       (ATP route): step 1/1. {ECO:0000256|ARBA:ARBA00005201,
CC       ECO:0000256|PIRNR:PIRNR004491}.
CC   -!- SIMILARITY: Belongs to the ribF family.
CC       {ECO:0000256|PIRNR:PIRNR004491}.
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DR   EMBL; CP000964; ACI10796.1; -; Genomic_DNA.
DR   AlphaFoldDB; B5Y236; -.
DR   KEGG; kpe:KPK_4736; -.
DR   HOGENOM; CLU_048437_0_1_6; -.
DR   UniPathway; UPA00276; UER00406.
DR   UniPathway; UPA00277; UER00407.
DR   Proteomes; UP000001734; 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:0008531; F:riboflavin kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006747; P:FAD biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009398; P:FMN biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   GO; GO:0009231; P:riboflavin biosynthetic process; IEA:InterPro.
DR   CDD; cd02064; FAD_synthetase_N; 1.
DR   Gene3D; 3.40.50.620; HUPs; 1.
DR   Gene3D; 2.40.30.30; Riboflavin kinase-like; 1.
DR   InterPro; IPR015864; FAD_synthase.
DR   InterPro; IPR023468; Riboflavin_kinase.
DR   InterPro; IPR002606; Riboflavin_kinase_bac.
DR   InterPro; IPR015865; Riboflavin_kinase_bac/euk.
DR   InterPro; IPR023465; Riboflavin_kinase_dom_sf.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   NCBIfam; TIGR00083; ribF; 1.
DR   PANTHER; PTHR22749:SF6; RIBOFLAVIN KINASE; 1.
DR   PANTHER; PTHR22749; RIBOFLAVIN KINASE/FMN ADENYLYLTRANSFERASE; 1.
DR   Pfam; PF06574; FAD_syn; 1.
DR   Pfam; PF01687; Flavokinase; 1.
DR   PIRSF; PIRSF004491; FAD_Synth; 1.
DR   SMART; SM00904; Flavokinase; 1.
DR   SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR   SUPFAM; SSF82114; Riboflavin kinase-like; 1.
PE   3: Inferred from homology;
KW   ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|PIRNR:PIRNR004491};
KW   FAD {ECO:0000256|ARBA:ARBA00022827, ECO:0000256|PIRNR:PIRNR004491};
KW   Flavoprotein {ECO:0000256|ARBA:ARBA00022630,
KW   ECO:0000256|PIRNR:PIRNR004491};
KW   FMN {ECO:0000256|ARBA:ARBA00022643, ECO:0000256|PIRNR:PIRNR004491};
KW   Kinase {ECO:0000256|PIRNR:PIRNR004491};
KW   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW   ECO:0000256|PIRNR:PIRNR004491};
KW   Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695,
KW   ECO:0000256|PIRNR:PIRNR004491};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR004491}.
FT   DOMAIN          183..307
FT                   /note="Riboflavin kinase"
FT                   /evidence="ECO:0000259|SMART:SM00904"
SQ   SEQUENCE   312 AA;  34358 MW;  F76DE7F0F2125542 CRC64;
     MKLIRGIHNL SQAPHGCVLT IGNFDGVHRG HQALLQRLRE EGRQRGLPVV VMIFEPQPLE
     LFAADKAPAR LTRLREKLGY LAESGVDYVL CVRFDRRFAA LTAQDFISEL LVRRLGVQFL
     AVGDDFRFGA GRQGDFLLLQ KAGAEYGFDV TSTQTFCEGG VRISSTAVRQ ALADDDLLLA
     ETLLGHPFSI SGRVVHGDEL GRTIGFPTAN LPLRRQVSPV KGVYAVEVTG LGDKPIAGVA
     NIGTRPTVAG VRQQLEVHLL DVVMDLYGRH INVVLRKKIR NEQRFASLDE LKAQIARDEL
     TARELFGLTS QA
//