RISB_XANOP
ID RISB_XANOP Reviewed; 154 AA.
AC B2SNW4;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 79.
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}; OrderedLocusNames=PXO_04397;
OS Xanthomonas oryzae pv. oryzae (strain PXO99A).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Xanthomonadales;
OC Xanthomonadaceae; Xanthomonas.
OX NCBI_TaxID=360094;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PXO99A;
RX PubMed=18452608; DOI=10.1186/1471-2164-9-204;
RA Salzberg S.L., Sommer D.D., Schatz M.C., Phillippy A.M., Rabinowicz P.D.,
RA Tsuge S., Furutani A., Ochiai H., Delcher A.L., Kelley D., Madupu R.,
RA Puiu D., Radune D., Shumway M., Trapnell C., Aparna G., Jha G., Pandey A.,
RA Patil P.B., Ishihara H., Meyer D.F., Szurek B., Verdier V., Koebnik R.,
RA Dow J.M., Ryan R.P., Hirata H., Tsuyumu S., Won Lee S., Seo Y.-S.,
RA Sriariyanum M., Ronald P.C., Sonti R.V., Van Sluys M.-A., Leach J.E.,
RA White F.F., Bogdanove A.J.;
RT "Genome sequence and rapid evolution of the rice pathogen Xanthomonas
RT oryzae pv. oryzae PXO99A.";
RL BMC Genomics 9:204-204(2008).
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 -!- SUBUNIT: Forms an icosahedral capsid composed of 60 subunits, arranged
CC as a dodecamer of pentamers. {ECO:0000255|HAMAP-Rule:MF_00178}.
CC -!- SIMILARITY: Belongs to the DMRL synthase family. {ECO:0000255|HAMAP-
CC Rule:MF_00178}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP000967; ACD57665.1; -; Genomic_DNA.
DR RefSeq; WP_011409394.1; NC_010717.2.
DR AlphaFoldDB; B2SNW4; -.
DR SMR; B2SNW4; -.
DR STRING; 360094.PXO_04397; -.
DR EnsemblBacteria; ACD57665; ACD57665; PXO_04397.
DR KEGG; xop:PXO_04397; -.
DR eggNOG; COG0054; Bacteria.
DR HOGENOM; CLU_089358_1_2_6; -.
DR OMA; CQGVTQG; -.
DR OrthoDB; 1680292at2; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000001740; 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 Riboflavin biosynthesis; Transferase.
FT CHAIN 1..154
FT /note="6,7-dimethyl-8-ribityllumazine synthase"
FT /id="PRO_1000098251"
FT ACT_SITE 88
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 22
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 56..58
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 80..82
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 85..86
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 113
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
FT BINDING 127
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00178"
SQ SEQUENCE 154 AA; 16223 MW; 680BD8D5A64B0954 CRC64;
MTHYEGDLRP PTARFAIIAS RWNARITDVL VAGARQSLAG NGIGEDAIDV IRVPGAWEIP
VAANRVAQSG QHGAIIALGC VIRGDTRHYE HVADLCAEGL MSVQLQTGVP VLNGVLAVER
VEDAEARAGG SHGNKGEECA LAALELVNLM ELLP
