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P11998

- RISB_BACSU

UniProt

P11998 - RISB_BACSU

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Protein
6,7-dimethyl-8-ribityllumazine synthase
Gene
ribH, BSU23250
Organism
Bacillus subtilis (strain 168)
Status
Reviewed - Annotation score: 5 out of 5 - Experimental evidence at protein leveli

Functioni

Catalyzes the formation of 6,7-dimethyl-8-ribityllumazine by condensation of 5-amino-6-(D-ribitylamino)uracil with 3,4-dihydroxy-2-butanone 4-phosphate. This is the penultimate step in the biosynthesis of riboflavin. Is able to use the non-natural R enantiomer of 3,4-dihydroxy-2-butanone 4-phosphate as a substrate, but with less efficiency than the natural S enantiomer. Cannot use unphosphorylated 3,4-dihydroxy-2-butanone, 3,4-dihydroxy-2-butanone 3-phosphate or diacetyl as substrates.2 Publications

Catalytic activityi

1-deoxy-L-glycero-tetrulose 4-phosphate + 5-amino-6-(D-ribitylamino)uracil = 6,7-dimethyl-8-(D-ribityl)lumazine + 2 H2O + phosphate.2 Publications

Kineticsi

kcat is 0.056 sec(-1) (1 Publication

).

  1. KM=5 µM for 5-amino-6-(D-ribitylamino)uracil (1 Publication)2 Publications
  2. KM=9 µM for 5-amino-6-(D-ribitylamino)uracil (1 Publication)
  3. KM=130 µM for (3S)-3,4-dihydroxy-2-butanone 4-phosphate (1 Publication)
  4. KM=55 µM for (3S)-3,4-dihydroxy-2-butanone 4-phosphate (1 Publication)

Vmax=12000 nmol/h/mg enzyme (1 Publication

)

pH dependencei

Optimum pH is 6.5-8.0.

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei88 – 881Proton donor Reviewed prediction
Binding sitei113 – 11315-amino-6-(D-ribitylamino)uracil; via amide nitrogen and carbonyl oxygen
Binding sitei127 – 12711-deoxy-L-glycero-tetrulose 4-phosphate Inferred

GO - Molecular functioni

  1. 6,7-dimethyl-8-ribityllumazine synthase activity Source: UniProtKB-HAMAP
  2. transferase activity Source: UniProtKB-KW
Complete GO annotation...

GO - Biological processi

  1. riboflavin biosynthetic process Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Transferase

Keywords - Biological processi

Riboflavin biosynthesis

Enzyme and pathway databases

BioCyciBSUB:BSU23250-MONOMER.
MetaCyc:MONOMER-14609.
SABIO-RKP11998.
UniPathwayiUPA00275; UER00404.

Names & Taxonomyi

Protein namesi
Recommended name:
6,7-dimethyl-8-ribityllumazine synthase (EC:2.5.1.78)
Short name:
DMRL synthase
Short name:
LS
Short name:
Lumazine synthase
Alternative name(s):
Heavy riboflavin synthase beta subunit
Short name:
HRS beta subunit
Gene namesi
Name:ribH
Ordered Locus Names:BSU23250
OrganismiBacillus subtilis (strain 168)
Taxonomic identifieri224308 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
ProteomesiUP000001570: Chromosome

Organism-specific databases

GenoListiBSU23250. [Micado]

Subcellular locationi

GO - Cellular componenti

  1. riboflavin synthase complex Source: InterPro
Complete GO annotation...

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi88 – 881H → A: 10% of wild-type activity. 17-fold decrease in the affinity for the pyrimidine substrate, but no effect on that for 1-deoxy-L-glycero-tetrulose 4-phosphate. 1 Publication
Mutagenesisi127 – 1271R → T: About 1% of wild-type activity. 1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 1541546,7-dimethyl-8-ribityllumazine synthaseUniRule annotation
PRO_0000134715Add
BLAST

Proteomic databases

PaxDbiP11998.

Interactioni

Subunit structurei

Forms an icosahedral capsid composed of 60 subunits, arranged as a dodecamer of pentamers. Can interact with riboflavin synthase, forming a lumazine synthase/riboflavin synthase complex, also designated as 'heavy riboflavin synthase complex', which consists of a trimer of riboflavin synthase enclosed within the icosahedral structure composed of 60 subunits of 6,7-dimethyl-8-ribityllumazine synthase.3 Publications

Protein-protein interaction databases

STRINGi224308.BSU23250.

Structurei

Secondary structure

Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi2 – 43
Beta strandi15 – 217
Helixi24 – 4017
Helixi45 – 473
Beta strandi48 – 558
Helixi56 – 583
Helixi59 – 6810
Beta strandi73 – 8210
Beta strandi85 – 873
Helixi88 – 10720
Beta strandi111 – 12010
Helixi121 – 1266
Beta strandi128 – 1303
Helixi135 – 15218

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1RVVX-ray2.401/2/3/4/A/B/C/D/E/F/G/H/I/J/K/L/M/N/O/P/Q/R/S/T/U/V/W/X/Y/Z1-154[»]
1ZISX-ray2.90A/B/C/D/E/F/G/H/I/J1-154[»]
ProteinModelPortaliP11998.
SMRiP11998. Positions 1-154.

Miscellaneous databases

EvolutionaryTraceiP11998.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni22 – 2325-amino-6-(D-ribitylamino)uracil bindingUniRule annotation
Regioni56 – 5835-amino-6-(D-ribitylamino)uracil bindingUniRule annotation
Regioni80 – 8235-amino-6-(D-ribitylamino)uracil bindingUniRule annotation
Regioni85 – 8621-deoxy-L-glycero-tetrulose 4-phosphate binding Inferred

Sequence similaritiesi

Belongs to the DMRL synthase family.

Phylogenomic databases

eggNOGiCOG0054.
HOGENOMiHOG000229249.
KOiK00794.
OMAiIEMANLS.
OrthoDBiEOG6RC3WC.
PhylomeDBiP11998.

Family and domain databases

Gene3Di3.40.50.960. 1 hit.
HAMAPiMF_00178. Lumazine_synth.
InterProiIPR002180. DMRL_synthase.
[Graphical view]
PANTHERiPTHR21058. PTHR21058. 1 hit.
PfamiPF00885. DMRL_synthase. 1 hit.
[Graphical view]
SUPFAMiSSF52121. SSF52121. 1 hit.
TIGRFAMsiTIGR00114. lumazine-synth. 1 hit.

Sequencei

Sequence statusi: Complete.

P11998-1 [UniParc]FASTAAdd to Basket

« Hide

MNIIQGNLVG TGLKIGIVVG RFNDFITSKL LSGAEDALLR HGVDTNDIDV    50
AWVPGAFEIP FAAKKMAETK KYDAIITLGT VIRGATTHYD YVCNEAAKGI 100
AQAANTTGVP VIFGIVTTEN IEQAIERAGT KAGNKGVDCA VSAIEMANLN 150
RSFE 154
Length:154
Mass (Da):16,287
Last modified:February 1, 1994 - v2
Checksum:i76CB336DF6A4BFEB
GO

Sequence conflict

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti65 – 651K → G AA sequence 1 Publication

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
L09228 Genomic DNA. Translation: AAA67484.1.
X51510 Genomic DNA. Translation: CAA35881.1.
AF516949 Genomic DNA. Translation: AAN01132.1.
AL009126 Genomic DNA. Translation: CAB14257.1.
PIRiS45546. A26708.
RefSeqiNP_390206.1. NC_000964.3.

Genome annotation databases

EnsemblBacteriaiCAB14257; CAB14257; BSU23250.
GeneIDi938949.
KEGGibsu:BSU23250.
PATRICi18976467. VBIBacSub10457_2424.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
L09228 Genomic DNA. Translation: AAA67484.1 .
X51510 Genomic DNA. Translation: CAA35881.1 .
AF516949 Genomic DNA. Translation: AAN01132.1 .
AL009126 Genomic DNA. Translation: CAB14257.1 .
PIRi S45546. A26708.
RefSeqi NP_390206.1. NC_000964.3.

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1RVV X-ray 2.40 1/2/3/4/A/B/C/D/E/F/G/H/I/J/K/L/M/N/O/P/Q/R/S/T/U/V/W/X/Y/Z 1-154 [» ]
1ZIS X-ray 2.90 A/B/C/D/E/F/G/H/I/J 1-154 [» ]
ProteinModelPortali P11998.
SMRi P11998. Positions 1-154.
ModBasei Search...

Protein-protein interaction databases

STRINGi 224308.BSU23250.

Proteomic databases

PaxDbi P11998.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai CAB14257 ; CAB14257 ; BSU23250 .
GeneIDi 938949.
KEGGi bsu:BSU23250.
PATRICi 18976467. VBIBacSub10457_2424.

Organism-specific databases

GenoListi BSU23250. [Micado ]

Phylogenomic databases

eggNOGi COG0054.
HOGENOMi HOG000229249.
KOi K00794.
OMAi IEMANLS.
OrthoDBi EOG6RC3WC.
PhylomeDBi P11998.

Enzyme and pathway databases

UniPathwayi UPA00275 ; UER00404 .
BioCyci BSUB:BSU23250-MONOMER.
MetaCyc:MONOMER-14609.
SABIO-RK P11998.

Miscellaneous databases

EvolutionaryTracei P11998.

Family and domain databases

Gene3Di 3.40.50.960. 1 hit.
HAMAPi MF_00178. Lumazine_synth.
InterProi IPR002180. DMRL_synthase.
[Graphical view ]
PANTHERi PTHR21058. PTHR21058. 1 hit.
Pfami PF00885. DMRL_synthase. 1 hit.
[Graphical view ]
SUPFAMi SSF52121. SSF52121. 1 hit.
TIGRFAMsi TIGR00114. lumazine-synth. 1 hit.
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. "Heavy riboflavin synthase of Bacillus subtilis. Primary structure of the beta subunit."
    Ludwig H.C., Lottspeich F., Henschen A., Ladenstein R., Bacher A.
    J. Biol. Chem. 262:1016-1021(1987) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
  2. "The organization of the Bacillus subtilis 168 chromosome region between the spoVA and serA genetic loci, based on sequence data."
    Sorokin A.V., Zumstein E., Azevedo V., Ehrlich S.D., Serror P.
    Mol. Microbiol. 10:385-395(1993) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: 168 / Marburg / ATCC 6051 / DSM 10 / JCM 1465 / NBRC 13719 / NCIMB 3610 / VKM B-501.
  3. Mironov V.N.
    Thesis (1989), USSR Academy of Sciences, Russia
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: 168 / SHGW.
  4. "Enzyme catalysis via control of activation entropy: site-directed mutagenesis of 6,7-dimethyl-8-ribityllumazine synthase."
    Fischer M., Haase I., Kis K., Meining W., Ladenstein R., Cushman M., Schramek N., Huber R., Bacher A.
    J. Mol. Biol. 326:783-793(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], FUNCTION, CATALYTIC ACTIVITY, KINETIC PARAMETERS, MUTAGENESIS OF HIS-88 AND ARG-127, MUTAGENESIS OF OTHER RESIDUES.
  5. "The complete genome sequence of the Gram-positive bacterium Bacillus subtilis."
    Kunst F., Ogasawara N., Moszer I., Albertini A.M., Alloni G., Azevedo V., Bertero M.G., Bessieres P., Bolotin A., Borchert S., Borriss R., Boursier L., Brans A., Braun M., Brignell S.C., Bron S., Brouillet S., Bruschi C.V.
    , Caldwell B., Capuano V., Carter N.M., Choi S.-K., Codani J.-J., Connerton I.F., Cummings N.J., Daniel R.A., Denizot F., Devine K.M., Duesterhoeft A., Ehrlich S.D., Emmerson P.T., Entian K.-D., Errington J., Fabret C., Ferrari E., Foulger D., Fritz C., Fujita M., Fujita Y., Fuma S., Galizzi A., Galleron N., Ghim S.-Y., Glaser P., Goffeau A., Golightly E.J., Grandi G., Guiseppi G., Guy B.J., Haga K., Haiech J., Harwood C.R., Henaut A., Hilbert H., Holsappel S., Hosono S., Hullo M.-F., Itaya M., Jones L.-M., Joris B., Karamata D., Kasahara Y., Klaerr-Blanchard M., Klein C., Kobayashi Y., Koetter P., Koningstein G., Krogh S., Kumano M., Kurita K., Lapidus A., Lardinois S., Lauber J., Lazarevic V., Lee S.-M., Levine A., Liu H., Masuda S., Mauel C., Medigue C., Medina N., Mellado R.P., Mizuno M., Moestl D., Nakai S., Noback M., Noone D., O'Reilly M., Ogawa K., Ogiwara A., Oudega B., Park S.-H., Parro V., Pohl T.M., Portetelle D., Porwollik S., Prescott A.M., Presecan E., Pujic P., Purnelle B., Rapoport G., Rey M., Reynolds S., Rieger M., Rivolta C., Rocha E., Roche B., Rose M., Sadaie Y., Sato T., Scanlan E., Schleich S., Schroeter R., Scoffone F., Sekiguchi J., Sekowska A., Seror S.J., Serror P., Shin B.-S., Soldo B., Sorokin A., Tacconi E., Takagi T., Takahashi H., Takemaru K., Takeuchi M., Tamakoshi A., Tanaka T., Terpstra P., Tognoni A., Tosato V., Uchiyama S., Vandenbol M., Vannier F., Vassarotti A., Viari A., Wambutt R., Wedler E., Wedler H., Weitzenegger T., Winters P., Wipat A., Yamamoto H., Yamane K., Yasumoto K., Yata K., Yoshida K., Yoshikawa H.-F., Zumstein E., Yoshikawa H., Danchin A.
    Nature 390:249-256(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: 168.
  6. "Cold shock stress-induced proteins in Bacillus subtilis."
    Graumann P., Schroeder K., Schmid R., Marahiel M.A.
    J. Bacteriol. 178:4611-4619(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 1-20.
    Strain: 168 / JH642.
  7. "Heavy riboflavin synthase from Bacillus subtilis. Quaternary structure and reaggregation."
    Bacher A., Ludwig H.C., Schnepple H., Ben-Shaul Y.
    J. Mol. Biol. 187:75-86(1986) [PubMed] [Europe PMC] [Abstract]
    Cited for: SUBUNIT.
  8. "Biosynthesis of riboflavin. Studies on the reaction mechanism of 6,7-dimethyl-8-ribityllumazine synthase."
    Kis K., Volk R., Bacher A.
    Biochemistry 34:2883-2892(1995) [PubMed] [Europe PMC] [Abstract]
    Cited for: FUNCTION, CATALYTIC ACTIVITY, SUBSTRATE SPECIFICITY, BIOPHYSICOCHEMICAL PROPERTIES, STEREOSPECIFICITY, REACTION MECHANISM, PATHWAY.
  9. "Heavy riboflavin synthase from Bacillus subtilis. Crystal structure analysis of the icosahedral beta 60 capsid at 3.3-A resolution."
    Ladenstein R., Schneider M., Huber R., Bartunik H.-D., Wilson K., Schott K., Bacher A.
    J. Mol. Biol. 203:1045-1070(1988) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (3.3 ANGSTROMS), SUBUNIT.
  10. "Studies on the lumazine synthase/riboflavin synthase complex of Bacillus subtilis: crystal structure analysis of reconstituted, icosahedral beta-subunit capsids with bound substrate analogue inhibitor at 2.4-A resolution."
    Ritseert K., Huber R., Turk D., Ladenstein R., Schmidt-Baese K., Bacher A.
    J. Mol. Biol. 253:151-167(1995) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) IN COMPLEX WITH SUBSTRATE ANALOG INHIBITOR AND PHOSPHATE, SUBUNIT, ACTIVE SITE, REACTION MECHANISM.
  11. "Crystal structure of recombinant lumazine synthase (hexagonal form)."
    Lopez-Jaramillo F.J.
    Submitted (FEB-2009) to the PDB data bank
    Cited for: X-RAY CRYSTALLOGRAPHY (2.90 ANGSTROMS) IN COMPLEX WITH SUBSTRATE ANALOG INHIBITOR AND PHOSPHATE.

Entry informationi

Entry nameiRISB_BACSU
AccessioniPrimary (citable) accession number: P11998
Secondary accession number(s): P17621
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: February 1, 1994
Last modified: July 9, 2014
This is version 119 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Bacillus subtilis
    Bacillus subtilis (strain 168): entries, gene names and cross-references to SubtiList
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. SIMILARITY comments
    Index of protein domains and families

External Data

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