RISB_AFIC5
ID RISB_AFIC5 Reviewed; 163 AA.
AC B6JGI3; F8BX80;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 16-DEC-2008, sequence version 1.
DT 03-AUG-2022, entry version 75.
DE RecName: Full=6,7-dimethyl-8-ribityllumazine synthase {ECO:0000255|HAMAP-Rule:MF_00178};
DE Short=DMRL synthase {ECO:0000255|HAMAP-Rule:MF_00178};
DE Short=LS {ECO:0000255|HAMAP-Rule:MF_00178};
DE Short=Lumazine synthase {ECO:0000255|HAMAP-Rule:MF_00178};
DE EC=2.5.1.78 {ECO:0000255|HAMAP-Rule:MF_00178};
GN Name=ribH {ECO:0000255|HAMAP-Rule:MF_00178};
GN OrderedLocusNames=OCAR_5864, OCA5_c21540;
OS Afipia carboxidovorans (strain ATCC 49405 / DSM 1227 / KCTC 32145 / OM5)
OS (Oligotropha carboxidovorans).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Bradyrhizobiaceae; Afipia.
OX NCBI_TaxID=504832;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49405 / DSM 1227 / KCTC 32145 / OM5;
RX PubMed=18539730; DOI=10.1128/jb.00614-08;
RA Paul D., Bridges S., Burgess S.C., Dandass Y., Lawrence M.L.;
RT "Genome sequence of the chemolithoautotrophic bacterium Oligotropha
RT carboxidovorans OM5T.";
RL J. Bacteriol. 190:5531-5532(2008).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49405 / DSM 1227 / KCTC 32145 / OM5;
RX PubMed=21742883; DOI=10.1128/jb.05619-11;
RA Volland S., Rachinger M., Strittmatter A., Daniel R., Gottschalk G.,
RA Meyer O.;
RT "Complete genome sequences of the chemolithoautotrophic Oligotropha
RT carboxidovorans strains OM4 and OM5.";
RL J. Bacteriol. 193:5043-5043(2011).
CC -!- FUNCTION: Catalyzes the formation of 6,7-dimethyl-8-ribityllumazine by
CC condensation of 5-amino-6-(D-ribitylamino)uracil with 3,4-dihydroxy-2-
CC butanone 4-phosphate. This is the penultimate step in the biosynthesis
CC of riboflavin. {ECO:0000255|HAMAP-Rule:MF_00178}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2S)-2-hydroxy-3-oxobutyl phosphate + 5-amino-6-(D-
CC ribitylamino)uracil = 6,7-dimethyl-8-(1-D-ribityl)lumazine + H(+) + 2
CC H2O + phosphate; Xref=Rhea:RHEA:26152, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:15934, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58201, ChEBI:CHEBI:58830; EC=2.5.1.78;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00178};
CC -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; riboflavin
CC from 2-hydroxy-3-oxobutyl phosphate and 5-amino-6-(D-
CC ribitylamino)uracil: step 1/2. {ECO:0000255|HAMAP-Rule:MF_00178}.
CC -!- SIMILARITY: Belongs to the DMRL synthase family. {ECO:0000255|HAMAP-
CC Rule:MF_00178}.
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DR EMBL; CP001196; ACI92989.1; -; Genomic_DNA.
DR EMBL; CP002826; AEI06857.1; -; Genomic_DNA.
DR RefSeq; WP_012563016.1; NC_015684.1.
DR AlphaFoldDB; B6JGI3; -.
DR SMR; B6JGI3; -.
DR STRING; 504832.OCAR_5864; -.
DR EnsemblBacteria; AEI06857; AEI06857; OCA5_c21540.
DR KEGG; oca:OCAR_5864; -.
DR KEGG; ocg:OCA5_c21540; -.
DR PATRIC; fig|504832.7.peg.2275; -.
DR eggNOG; COG0054; Bacteria.
DR HOGENOM; CLU_089358_1_2_5; -.
DR OMA; CQGVTQG; -.
DR OrthoDB; 1680292at2; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000007730; Chromosome.
DR GO; GO:0009349; C:riboflavin synthase complex; IEA:InterPro.
DR GO; GO:0000906; F:6,7-dimethyl-8-ribityllumazine synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd09209; Lumazine_synthase-I; 1.
DR Gene3D; 3.40.50.960; -; 1.
DR HAMAP; MF_00178; Lumazine_synth; 1.
DR InterPro; IPR034964; LS.
DR InterPro; IPR002180; LS/RS.
DR InterPro; IPR036467; LS/RS_sf.
DR PANTHER; PTHR21058; PTHR21058; 1.
DR Pfam; PF00885; DMRL_synthase; 1.
DR SUPFAM; SSF52121; SSF52121; 1.
DR TIGRFAMs; TIGR00114; lumazine-synth; 1.
PE 3: Inferred from homology;
KW Reference proteome; Riboflavin biosynthesis; Transferase.
FT CHAIN 1..163
FT /note="6,7-dimethyl-8-ribityllumazine synthase"
FT /id="PRO_1000098212"
FT ACT_SITE 95
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 27
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 58..60
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 87..89
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 92..93
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 120
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 134
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
SQ SEQUENCE 163 AA; 17326 MW; 7E80FFB67DEA5244 CRC64;
MATPRRAQLD DKTDITGARV VIVEARFYDD IQDALLEGAK TELDAAGVAY DILSVPGALE
IPAAIAIALD AAKKNGRPYE GAVALGCVIR GDTIHFEIVS AESARGLMDL SVSRSLALGN
GIITVNNTEQ AWERARADDL NKGGDAARAA IQMIRIKRKL AKP
