ID L0M1S0_ENTBF Unreviewed; 217 AA.
AC L0M1S0;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 68.
DE RecName: Full=3,4-dihydroxy-2-butanone 4-phosphate synthase {ECO:0000256|ARBA:ARBA00018836, ECO:0000256|HAMAP-Rule:MF_00180};
DE Short=DHBP synthase {ECO:0000256|HAMAP-Rule:MF_00180, ECO:0000256|RuleBase:RU003843};
DE EC=4.1.99.12 {ECO:0000256|ARBA:ARBA00012153, ECO:0000256|HAMAP-Rule:MF_00180};
GN Name=ribB {ECO:0000256|HAMAP-Rule:MF_00180};
GN OrderedLocusNames=D782_0640 {ECO:0000313|EMBL:AGB76695.1};
OS Enterobacteriaceae bacterium (strain FGI 57).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae.
OX NCBI_TaxID=693444 {ECO:0000313|EMBL:AGB76695.1, ECO:0000313|Proteomes:UP000011002};
RN [1] {ECO:0000313|EMBL:AGB76695.1, ECO:0000313|Proteomes:UP000011002}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=FGI 57 {ECO:0000313|EMBL:AGB76695.1,
RC ECO:0000313|Proteomes:UP000011002};
RX PubMed=23469353; DOI=10.1128/genomeA.00238-12;
RA Aylward F.O., Tremmel D.M., Bruce D.C., Chain P., Chen A.,
RA Walston Davenport K., Detter C., Han C.S., Han J., Huntemann M.,
RA Ivanova N.N., Kyrpides N.C., Markowitz V., Mavrommatis K., Nolan M.,
RA Pagani I., Pati A., Pitluck S., Deshpande S., Goodwin L., Woyke T.,
RA Currie C.R.;
RT "Complete genome of Enterobacteriaceae bacterium strain FGI 57, a strain
RT associated with leaf-cutter ant fungus gardens.";
RL Genome Announc. 1:E00238-12(2013).
CC -!- FUNCTION: Catalyzes the conversion of D-ribulose 5-phosphate to formate
CC and 3,4-dihydroxy-2-butanone 4-phosphate.
CC {ECO:0000256|ARBA:ARBA00002284, ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=D-ribulose 5-phosphate = (2S)-2-hydroxy-3-oxobutyl phosphate +
CC formate + H(+); Xref=Rhea:RHEA:18457, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15740, ChEBI:CHEBI:58121, ChEBI:CHEBI:58830;
CC EC=4.1.99.12; Evidence={ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843};
CC Note=Binds 2 divalent metal cations per subunit. Magnesium or
CC manganese. {ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843};
CC -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 2-hydroxy-3-
CC oxobutyl phosphate from D-ribulose 5-phosphate: step 1/1.
CC {ECO:0000256|ARBA:ARBA00004904, ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00180,
CC ECO:0000256|RuleBase:RU003843}.
CC -!- SIMILARITY: Belongs to the DHBP synthase family. {ECO:0000256|HAMAP-
CC Rule:MF_00180, ECO:0000256|RuleBase:RU003843}.
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DR EMBL; CP003938; AGB76695.1; -; Genomic_DNA.
DR AlphaFoldDB; L0M1S0; -.
DR STRING; 693444.D782_0640; -.
DR KEGG; ebf:D782_0640; -.
DR PATRIC; fig|693444.3.peg.621; -.
DR eggNOG; COG0108; Bacteria.
DR HOGENOM; CLU_020273_3_0_6; -.
DR OrthoDB; 9793111at2; -.
DR UniPathway; UPA00275; UER00399.
DR Proteomes; UP000011002; Chromosome.
DR GO; GO:0008686; F:3,4-dihydroxy-2-butanone-4-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniRule.
DR Gene3D; 3.90.870.10; DHBP synthase; 1.
DR HAMAP; MF_00180; RibB; 1.
DR InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
DR InterPro; IPR000422; DHBP_synthase_RibB.
DR NCBIfam; TIGR00506; ribB; 1.
DR PANTHER; PTHR21327:SF38; 3,4-DIHYDROXY-2-BUTANONE 4-PHOSPHATE SYNTHASE; 1.
DR PANTHER; PTHR21327; GTP CYCLOHYDROLASE II-RELATED; 1.
DR Pfam; PF00926; DHBP_synthase; 1.
DR SUPFAM; SSF55821; YrdC/RibB; 1.
PE 3: Inferred from homology;
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00180};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00180, ECO:0000256|RuleBase:RU003843};
KW Manganese {ECO:0000256|ARBA:ARBA00023211, ECO:0000256|HAMAP-Rule:MF_00180};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00180}; Reference proteome {ECO:0000313|Proteomes:UP000011002};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619, ECO:0000256|HAMAP-
KW Rule:MF_00180}.
FT BINDING 37..38
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 38
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 38
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 42
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 150..154
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 153
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT SITE 136
FT /note="Essential for catalytic activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT SITE 174
FT /note="Essential for catalytic activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
SQ SEQUENCE 217 AA; 23403 MW; 2E9B487E2215A825 CRC64;
MNQTLLSSFG TAFERVENAL IALREGRGAM VLDDENRENE GDMVFAAENM TVEQMALTIR
HGSGIVCLCL TEERRKQLDL PMMVENNTSA YGTGFTITIE AAHGVTTGVS AADRLTTVRA
AIADGAKPSD LNRPGHVFPL RAQQGGVLTR GGHTEATIDL VSLAGFKPAG VLCELTNDDG
TMARAPECIE FARKHNMALV TIEDLVAYRQ AHERKAS
//
