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RIBB_SERP5
ID   RIBB_SERP5              Reviewed;         217 AA.
AC   A8GJU0;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   03-AUG-2022, entry version 77.
DE   RecName: Full=3,4-dihydroxy-2-butanone 4-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00180};
DE            Short=DHBP synthase {ECO:0000255|HAMAP-Rule:MF_00180};
DE            EC=4.1.99.12 {ECO:0000255|HAMAP-Rule:MF_00180};
GN   Name=ribB {ECO:0000255|HAMAP-Rule:MF_00180}; OrderedLocusNames=Spro_4286;
OS   Serratia proteamaculans (strain 568).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=399741;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=568;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Taghavi S., Newman L.,
RA   Vangronsveld J., van der Lelie D., Richardson P.;
RT   "Complete sequence of chromosome of Serratia proteamaculans 568.";
RL   Submitted (SEP-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the conversion of D-ribulose 5-phosphate to formate
CC       and 3,4-dihydroxy-2-butanone 4-phosphate. {ECO:0000255|HAMAP-
CC       Rule:MF_00180}.
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:0000255|HAMAP-Rule:MF_00180};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00180};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00180};
CC       Note=Binds 2 divalent metal cations per subunit. Magnesium or
CC       manganese. {ECO:0000255|HAMAP-Rule:MF_00180};
CC   -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 2-hydroxy-3-
CC       oxobutyl phosphate from D-ribulose 5-phosphate: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00180}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00180}.
CC   -!- SIMILARITY: Belongs to the DHBP synthase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00180}.
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DR   EMBL; CP000826; ABV43380.1; -; Genomic_DNA.
DR   RefSeq; WP_012146985.1; NC_009832.1.
DR   AlphaFoldDB; A8GJU0; -.
DR   SMR; A8GJU0; -.
DR   STRING; 399741.Spro_4286; -.
DR   EnsemblBacteria; ABV43380; ABV43380; Spro_4286.
DR   KEGG; spe:Spro_4286; -.
DR   eggNOG; COG0108; Bacteria.
DR   HOGENOM; CLU_020273_3_0_6; -.
DR   OMA; DAGGLIC; -.
DR   OrthoDB; 900513at2; -.
DR   UniPathway; UPA00275; UER00399.
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   HAMAP; MF_00180; RibB; 1.
DR   InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
DR   InterPro; IPR000422; DHBP_synthase_RibB.
DR   Pfam; PF00926; DHBP_synthase; 1.
DR   SUPFAM; SSF55821; SSF55821; 1.
DR   TIGRFAMs; TIGR00506; ribB; 1.
PE   3: Inferred from homology;
KW   Lyase; Magnesium; Manganese; Metal-binding; Riboflavin biosynthesis.
FT   CHAIN           1..217
FT                   /note="3,4-dihydroxy-2-butanone 4-phosphate synthase"
FT                   /id="PRO_1000058381"
FT   BINDING         37..38
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         38
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         38
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         42
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         150..154
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         153
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   BINDING         174
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   SITE            136
FT                   /note="Essential for catalytic activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
FT   SITE            174
FT                   /note="Essential for catalytic activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00180"
SQ   SEQUENCE   217 AA;  23623 MW;  0FF74AF4B5BDF700 CRC64;
     MNQTLLSDFG TPVERVERAL EALRNGRGVM VLDDENRENE GDMIFAAETM TVEQMALTIR
     HGSGIVCLCL TEERRQQLEL PMMVTNNSSQ FQTAFTVTIE AAQGVTTGVS ASDRLTTIRA
     AVADNAKPSD LNRPGHVFPL RAQPGGVLSR RGHTEATIDL VSMAGFKPAG VLCELTNDDG
     SMAHAPEVIL FAKQHDMTVL TIEDLVAYRQ AHEQKAS
 
 
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