ID D6GQA7_FILAD Unreviewed; 155 AA.
AC D6GQA7;
DT 13-JUL-2010, integrated into UniProtKB/TrEMBL.
DT 13-JUL-2010, sequence version 1.
DT 27-MAR-2024, entry version 72.
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 ECO:0000313|EMBL:EFE28960.1};
GN OrderedLocusNames=HMPREF0389_00882 {ECO:0000313|EMBL:EFE28960.1};
OS Filifactor alocis (strain ATCC 35896 / CCUG 47790 / D40 B5) (Fusobacterium
OS alocis).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Peptostreptococcaceae;
OC Filifactor.
OX NCBI_TaxID=546269 {ECO:0000313|EMBL:EFE28960.1, ECO:0000313|Proteomes:UP000007468};
RN [1] {ECO:0000313|Proteomes:UP000007468}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 35896 / D40 B5 {ECO:0000313|Proteomes:UP000007468};
RG The Broad Institute Genome Sequencing Platform;
RA Ward D., Earl A., Feldgarden M., Young S.K., Gargeya S., Zeng Q.,
RA Alvarado L., Berlin A., Bochicchio J., Chapman S.B., Chen Z., Freedman E.,
RA Gellesch M., Goldberg J., Griggs A., Gujja S., Heilman E., Heiman D.,
RA Howarth C., Mehta T., Neiman D., Pearson M., Roberts A., Saif S., Shea T.,
RA Shenoy N., Sisk P., Stolte C., Sykes S., White J., Yandava C., Izard J.,
RA Blanton J.M., Baranova O.V., Tanner A.C., Dewhirst F.E., Haas B.,
RA Nusbaum C., Birren B.;
RT "The genome sequence of Filifactor alocis strain ATCC 35896.";
RL Submitted (DEC-2010) 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; CP002390; EFE28960.1; -; Genomic_DNA.
DR RefSeq; WP_014262875.1; NC_016630.1.
DR AlphaFoldDB; D6GQA7; -.
DR STRING; 546269.HMPREF0389_00882; -.
DR KEGG; faa:HMPREF0389_00882; -.
DR PATRIC; fig|546269.5.peg.1379; -.
DR eggNOG; COG0054; Bacteria.
DR OrthoDB; 9809709at2; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000007468; 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:0016874; F:ligase activity; IEA:UniProtKB-KW.
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 Ligase {ECO:0000313|EMBL:EFE28960.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000007468};
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 88
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 22
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|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:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_00178"
FT BINDING 113
FT /ligand="5-amino-6-(D-ribitylamino)uracil"
FT /ligand_id="ChEBI:CHEBI:15934"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
FT BINDING 127
FT /ligand="(2S)-2-hydroxy-3-oxobutyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58830"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00178"
SQ SEQUENCE 155 AA; 16667 MW; DFC89979A517833F CRC64;
MRTFEGKLVA KDMKIGIVVA RFNEFITSKL LGGAMDGLIR HNVSEENIDV AWVPGAFEIP
LIASKMAALK KYDAVLCLGA VIRGSTSHYD YVCNEVSKGI ASISLESGIP VMFGVITTEN
IEQAIERAGT KAGNKGFDCA VSAVEMVNLI REIEA
//
