ID L0FXW7_ECHVK Unreviewed; 158 AA.
AC L0FXW7;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 55.
DE RecName: Full=6,7-dimethyl-8-ribityllumazine synthase {ECO:0000256|ARBA:ARBA00012664, ECO:0000256|HAMAP-Rule:MF_00178};
DE Short=DMRL synthase {ECO:0000256|HAMAP-Rule:MF_00178};
DE Short=LS {ECO:0000256|HAMAP-Rule:MF_00178};
DE Short=Lumazine synthase {ECO:0000256|HAMAP-Rule:MF_00178};
DE EC=2.5.1.78 {ECO:0000256|ARBA:ARBA00012664, ECO:0000256|HAMAP-Rule:MF_00178};
GN Name=ribH {ECO:0000256|HAMAP-Rule:MF_00178};
GN OrderedLocusNames=Echvi_1219 {ECO:0000313|EMBL:AGA77490.1};
OS Echinicola vietnamensis (strain DSM 17526 / LMG 23754 / KMM 6221).
OC Bacteria; Bacteroidota; Cytophagia; Cytophagales; Cyclobacteriaceae;
OC Echinicola.
OX NCBI_TaxID=926556 {ECO:0000313|EMBL:AGA77490.1, ECO:0000313|Proteomes:UP000010796};
RN [1] {ECO:0000313|Proteomes:UP000010796}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17526 / LMG 23754 / KMM 6221
RC {ECO:0000313|Proteomes:UP000010796};
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Peters L., Ovchinnikova G., Teshima H.,
RA Kyrpides N., Mavromatis K., Ivanova N., Brettin T., Detter J.C., Han C.,
RA Larimer F., Land M., Hauser L., Markowitz V., Cheng J.-F., Hugenholtz P.,
RA Woyke T., Wu D., Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete genome of Echinicola vietnamensis DSM 17526.";
RL Submitted (FEB-2012) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|ARBA:ARBA00001697, ECO:0000256|HAMAP-
CC 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:0000256|ARBA:ARBA00004917,
CC ECO:0000256|HAMAP-Rule:MF_00178}.
CC -!- SIMILARITY: Belongs to the DMRL synthase family.
CC {ECO:0000256|ARBA:ARBA00007424, ECO:0000256|HAMAP-Rule:MF_00178}.
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DR EMBL; CP003346; AGA77490.1; -; Genomic_DNA.
DR RefSeq; WP_015265054.1; NC_019904.1.
DR AlphaFoldDB; L0FXW7; -.
DR STRING; 926556.Echvi_1219; -.
DR KEGG; evi:Echvi_1219; -.
DR PATRIC; fig|926556.3.peg.1294; -.
DR eggNOG; COG0054; Bacteria.
DR HOGENOM; CLU_089358_1_2_10; -.
DR OrthoDB; 9809709at2; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000010796; 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; Lumazine/riboflavin synthase; 1.
DR HAMAP; MF_00178; Lumazine_synth; 1.
DR InterPro; IPR034964; LS.
DR InterPro; IPR002180; LS/RS.
DR InterPro; IPR036467; LS/RS_sf.
DR NCBIfam; TIGR00114; lumazine-synth; 1.
DR PANTHER; PTHR21058:SF0; 6,7-DIMETHYL-8-RIBITYLLUMAZINE SYNTHASE; 1.
DR PANTHER; PTHR21058; 6,7-DIMETHYL-8-RIBITYLLUMAZINE SYNTHASE DMRL SYNTHASE LUMAZINE SYNTHASE; 1.
DR Pfam; PF00885; DMRL_synthase; 1.
DR SUPFAM; SSF52121; Lumazine synthase; 1.
PE 3: Inferred from homology;
KW Reference proteome {ECO:0000313|Proteomes:UP000010796};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619, ECO:0000256|HAMAP-
KW Rule:MF_00178};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00178}.
FT ACT_SITE 97
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 31
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 65..67
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 89..91
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 94..95
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 122
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 136
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
SQ SEQUENCE 158 AA; 17243 MW; 018F954668A9BBE4 CRC64;
MATSLKNLSQ HSDTNITDIS HKKFGIVVSE WNEEITESLY EGAVETLRTH GAKKENIYRK
NVPGSFELSL GAQWVAEVKE IDAVICLGCV IQGETKHFDF ICDAVAHGIT NVGLKYNKPV
IFGVLTPDNQ QQALDRAGGK HGNKGDEAAI TAIKMLGF
//
