ID D8LLC7_ECTSI Unreviewed; 251 AA.
AC D8LLC7;
DT 05-OCT-2010, integrated into UniProtKB/TrEMBL.
DT 05-OCT-2010, sequence version 1.
DT 27-MAR-2024, entry version 56.
DE RecName: Full=6,7-dimethyl-8-ribityllumazine synthase {ECO:0000256|ARBA:ARBA00012664, ECO:0000256|RuleBase:RU003795};
DE Short=DMRL synthase {ECO:0000256|RuleBase:RU003795};
DE EC=2.5.1.78 {ECO:0000256|ARBA:ARBA00012664, ECO:0000256|RuleBase:RU003795};
GN ORFNames=Esi_0036_0086 {ECO:0000313|EMBL:CBN77125.1};
OS Ectocarpus siliculosus (Brown alga) (Conferva siliculosa).
OC Eukaryota; Sar; Stramenopiles; Ochrophyta; PX clade; Phaeophyceae;
OC Ectocarpales; Ectocarpaceae; Ectocarpus.
OX NCBI_TaxID=2880 {ECO:0000313|EMBL:CBN77125.1, ECO:0000313|Proteomes:UP000002630};
RN [1] {ECO:0000313|EMBL:CBN77125.1, ECO:0000313|Proteomes:UP000002630}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Ec32 / CCAP1310/4 {ECO:0000313|Proteomes:UP000002630};
RX PubMed=20520714; DOI=10.1038/nature09016;
RA Cock J.M., Sterck L., Rouze P., Scornet D., Allen A.E., Amoutzias G.,
RA Anthouard V., Artiguenave F., Aury J.M., Badger J.H., Beszteri B.,
RA Billiau K., Bonnet E., Bothwell J.H., Bowler C., Boyen C., Brownlee C.,
RA Carrano C.J., Charrier B., Cho G.Y., Coelho S.M., Collen J., Corre E.,
RA Da Silva C., Delage L., Delaroque N., Dittami S.M., Doulbeau S., Elias M.,
RA Farnham G., Gachon C.M., Gschloessl B., Heesch S., Jabbari K., Jubin C.,
RA Kawai H., Kimura K., Kloareg B., Kupper F.C., Lang D., Le Bail A.,
RA Leblanc C., Lerouge P., Lohr M., Lopez P.J., Martens C., Maumus F.,
RA Michel G., Miranda-Saavedra D., Morales J., Moreau H., Motomura T.,
RA Nagasato C., Napoli C.A., Nelson D.R., Nyvall-Collen P., Peters A.F.,
RA Pommier C., Potin P., Poulain J., Quesneville H., Read B., Rensing S.A.,
RA Ritter A., Rousvoal S., Samanta M., Samson G., Schroeder D.C., Segurens B.,
RA Strittmatter M., Tonon T., Tregear J.W., Valentin K., von Dassow P.,
RA Yamagishi T., Van de Peer Y., Wincker P.;
RT "The Ectocarpus genome and the independent evolution of multicellularity in
RT brown algae.";
RL Nature 465:617-621(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|RuleBase:RU003795}.
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,
CC ECO:0000256|RuleBase:RU003795};
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|RuleBase:RU003795}.
CC -!- SIMILARITY: Belongs to the DMRL synthase family.
CC {ECO:0000256|ARBA:ARBA00007424, ECO:0000256|RuleBase:RU003795}.
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DR EMBL; FN648553; CBN77125.1; -; Genomic_DNA.
DR AlphaFoldDB; D8LLC7; -.
DR STRING; 2880.D8LLC7; -.
DR EnsemblProtists; CBN77125; CBN77125; Esi_0036_0086.
DR eggNOG; KOG3243; Eukaryota.
DR InParanoid; D8LLC7; -.
DR OMA; ISTRWNE; -.
DR OrthoDB; 276496at2759; -.
DR UniPathway; UPA00275; UER00404.
DR Proteomes; UP000002630; Chromosome LG20.
DR GO; GO:0009349; C:riboflavin synthase complex; IEA:UniProtKB-UniRule.
DR GO; GO:0000906; F:6,7-dimethyl-8-ribityllumazine synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniPathway.
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.
DR PROSITE; PS51257; PROKAR_LIPOPROTEIN; 1.
PE 3: Inferred from homology;
KW Reference proteome {ECO:0000313|Proteomes:UP000002630};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619,
KW ECO:0000256|RuleBase:RU003795}; Signal {ECO:0000256|SAM:SignalP};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU003795}.
FT SIGNAL 1..22
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 23..251
FT /note="6,7-dimethyl-8-ribityllumazine synthase"
FT /evidence="ECO:0000256|SAM:SignalP"
FT /id="PRO_5003117300"
FT REGION 219..251
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 228..242
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 251 AA; 26219 MW; 832C880CECF41C38 CRC64;
MRVFESALTL AGGLFACRTA SAFVAPAASI RALRNAPAGG ASTTSTYGSS RGAPATRMMA
AEGVTFGELD GTDVRVGIIS TRWNEEIVNR LTDGVKESLK ECNVTESNIF ETKVPGAFEL
PLAARFLSLS QTVDAVVCVG CLIKGDTMHF EYIAESTCKG LMDVSIQTST PVVLGVLTCT
EEEQAIKRST GDNNHGVDWG KTAVEMGLLR MSATGVGKKA GGALGFGKSL DDKKDGKDGA
IPGSKPKKIG F
//
