ID E6SJ48_THEM7 Unreviewed; 155 AA.
AC E6SJ48;
DT 08-MAR-2011, integrated into UniProtKB/TrEMBL.
DT 08-MAR-2011, sequence version 1.
DT 27-MAR-2024, entry version 74.
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=Tmar_1990 {ECO:0000313|EMBL:ADU52072.1};
OS Thermaerobacter marianensis (strain ATCC 700841 / DSM 12885 / JCM 10246 /
OS 7p75a).
OC Bacteria; Bacillota; Clostridia; Eubacteriales;
OC Clostridiales Family XVII. Incertae Sedis; Thermaerobacter.
OX NCBI_TaxID=644966 {ECO:0000313|EMBL:ADU52072.1, ECO:0000313|Proteomes:UP000008915};
RN [1] {ECO:0000313|EMBL:ADU52072.1, ECO:0000313|Proteomes:UP000008915}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700841 / DSM 12885 / JCM 10246 / 7p75a
RC {ECO:0000313|Proteomes:UP000008915};
RX PubMed=21304738;
RA Han C., Gu W., Zhang X., Lapidus A., Nolan M., Copeland A., Lucas S.,
RA Del Rio T.G., Tice H., Cheng J.F., Tapia R., Goodwin L., Pitluck S.,
RA Pagani I., Ivanova N., Mavromatis K., Mikhailova N., Pati A., Chen A.,
RA Palaniappan K., Land M., Hauser L., Chang Y.J., Jeffries C.D.,
RA Schneider S., Rohde M., Goker M., Pukall R., Woyke T., Bristow J.,
RA Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C., Klenk H.P.,
RA Detter J.C.;
RT "Complete genome sequence of Thermaerobacter marianensis type strain
RT (7p75a).";
RL Stand. Genomic Sci. 3:337-345(2010).
RN [2] {ECO:0000313|Proteomes:UP000008915}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700841 / DSM 12885 / JCM 10246 / 7p75a
RC {ECO:0000313|Proteomes:UP000008915};
RX DOI=10.4056/sigs.1373474;
RA Han C., Gu W., Zhang X., Lapidus A., Nolan M., Copeland A., Lucas S.,
RA Glavina Del Rio T., Tice H., Cheng J., Tapia R., Goodwin L., Pitluck S.,
RA Pagani I., Ivanova N., Mavromatis K., Mikhailova N., Pati A., Chen A.,
RA Palaniappan K., Land M., Hauser L., Chang Y., Jeffries C., Schneider S.,
RA Rohde M., Goker M., Pukall R., Woyke T., Bristow J., Eisen J.,
RA Markowitz V., Hugenholtz P., Kyrpides N., Klenk H., Detter J.;
RT "Complete genome sequence of Thermaerobacter marianensis type strain
RT (7p75aT).";
RL Stand. Genomic Sci. 3:337-345(2010).
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; CP002344; ADU52072.1; -; Genomic_DNA.
DR RefSeq; WP_013496372.1; NC_014831.1.
DR AlphaFoldDB; E6SJ48; -.
DR STRING; 644966.Tmar_1990; -.
DR KEGG; tmr:Tmar_1990; -.
DR eggNOG; COG0054; Bacteria.
DR HOGENOM; CLU_089358_1_1_9; -.
DR OrthoDB; 9809709at2; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000008915; 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:UP000008915};
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; 16064 MW; 5B96612226A411EA CRC64;
MAVYEGTLNP AGIRLAVVVA RYNRPVTAAL LAGAQDALRR QGVPAEAVDV VWVPGSFELP
VTARRLAASG RYHAIVALGA VLKGETAHFE YVAGAAAQGL LQAGLSTGVP VIFGVLTCET
LEQALDRTGL RAGDRGAEAA LAALEMANLF RTLPD
//
