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RIFK_STAMF
ID   RIFK_STAMF              Reviewed;         130 AA.
AC   A3DNT5;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 78.
DE   RecName: Full=Riboflavin kinase {ECO:0000255|HAMAP-Rule:MF_01285};
DE            Short=RFK {ECO:0000255|HAMAP-Rule:MF_01285};
DE            EC=2.7.1.161 {ECO:0000255|HAMAP-Rule:MF_01285};
DE   AltName: Full=CTP-dependent riboflavin kinase {ECO:0000255|HAMAP-Rule:MF_01285};
DE   AltName: Full=CTP:riboflavin 5'-phosphotransferase {ECO:0000255|HAMAP-Rule:MF_01285};
DE   AltName: Full=Flavokinase {ECO:0000255|HAMAP-Rule:MF_01285};
GN   Name=ribK {ECO:0000255|HAMAP-Rule:MF_01285}; OrderedLocusNames=Smar_1200;
OS   Staphylothermus marinus (strain ATCC 43588 / DSM 3639 / JCM 9404 / F1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Staphylothermus.
OX   NCBI_TaxID=399550;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX   PubMed=19341479; DOI=10.1186/1471-2164-10-145;
RA   Anderson I.J., Dharmarajan L., Rodriguez J., Hooper S., Porat I.,
RA   Ulrich L.E., Elkins J.G., Mavromatis K., Sun H., Land M., Lapidus A.,
RA   Lucas S., Barry K., Huber H., Zhulin I.B., Whitman W.B., Mukhopadhyay B.,
RA   Woese C., Bristow J., Kyrpides N.;
RT   "The complete genome sequence of Staphylothermus marinus reveals
RT   differences in sulfur metabolism among heterotrophic Crenarchaeota.";
RL   BMC Genomics 10:145-145(2009).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43588 / DSM 3639 / JCM 9404 / F1;
RX   PubMed=21304655; DOI=10.4056/sigs.30527;
RA   Anderson I.J., Sun H., Lapidus A., Copeland A., Glavina Del Rio T.,
RA   Tice H., Dalin E., Lucas S., Barry K., Land M., Richardson P., Huber H.,
RA   Kyrpides N.C.;
RT   "Complete genome sequence of Staphylothermus marinus Stetter and Fiala 1986
RT   type strain F1.";
RL   Stand. Genomic Sci. 1:183-188(2009).
CC   -!- FUNCTION: Catalyzes the CTP-dependent phosphorylation of riboflavin
CC       (vitamin B2) to form flavin mononucleotide (FMN). {ECO:0000255|HAMAP-
CC       Rule:MF_01285}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=CTP + riboflavin = CDP + FMN + H(+); Xref=Rhea:RHEA:25021,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:37563, ChEBI:CHEBI:57986,
CC         ChEBI:CHEBI:58069, ChEBI:CHEBI:58210; EC=2.7.1.161;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01285};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01285};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01285};
CC   -!- PATHWAY: Cofactor biosynthesis; FMN biosynthesis; FMN from riboflavin
CC       (CTP route): step 1/1. {ECO:0000255|HAMAP-Rule:MF_01285}.
CC   -!- SIMILARITY: Belongs to the archaeal riboflavin kinase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01285}.
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DR   EMBL; CP000575; ABN70295.1; -; Genomic_DNA.
DR   RefSeq; WP_011839486.1; NC_009033.1.
DR   AlphaFoldDB; A3DNT5; -.
DR   SMR; A3DNT5; -.
DR   STRING; 399550.Smar_1200; -.
DR   EnsemblBacteria; ABN70295; ABN70295; Smar_1200.
DR   GeneID; 4907167; -.
DR   KEGG; smr:Smar_1200; -.
DR   eggNOG; arCOG01904; Archaea.
DR   HOGENOM; CLU_140165_0_0_2; -.
DR   OMA; PYEGTLN; -.
DR   OrthoDB; 91297at2157; -.
DR   UniPathway; UPA00276; UER00929.
DR   Proteomes; UP000000254; Chromosome.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0008531; F:riboflavin kinase activity; IEA:InterPro.
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   Gene3D; 2.40.30.30; -; 1.
DR   HAMAP; MF_01285; Riboflavin_kinase; 1.
DR   InterPro; IPR039063; RibK_CTP-dep.
DR   InterPro; IPR023470; Riboflavin_kinase_archaeal.
DR   InterPro; IPR023602; Riboflavin_kinase_CTP-dep.
DR   InterPro; IPR023465; Riboflavin_kinase_dom_sf.
DR   PANTHER; PTHR40706; PTHR40706; 1.
DR   Pfam; PF01982; CTP-dep_RFKase; 1.
DR   SUPFAM; SSF82114; SSF82114; 1.
PE   3: Inferred from homology;
KW   Flavoprotein; FMN; Kinase; Magnesium; Metal-binding; Nucleotide-binding;
KW   Reference proteome; Transferase.
FT   CHAIN           1..130
FT                   /note="Riboflavin kinase"
FT                   /id="PRO_0000322077"
FT   BINDING         12..17
FT                   /ligand="CDP"
FT                   /ligand_id="ChEBI:CHEBI:58069"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
FT   BINDING         39
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
FT   BINDING         41
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
FT   BINDING         90
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
FT   BINDING         98
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
FT   BINDING         103..106
FT                   /ligand="CDP"
FT                   /ligand_id="ChEBI:CHEBI:58069"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01285"
SQ   SEQUENCE   130 AA;  14675 MW;  9A25F0124C988C2D CRC64;
     MPIKLKGKIV SGLGVGAKYV QLYRGVFNKY LGIDPYPGTL NIDIGQDFFI YTKKLKAKII
     PPPRKGLGCV LAYPGILMGI KIYVIKPCIT NHGRNILEII SDKNLRKTLN LKDNDIVEII
     IYDEEDYSYI
 
 
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