ID A0A0Q5QDS7_9FLAO Unreviewed; 373 AA.
AC A0A0Q5QDS7;
DT 20-JAN-2016, integrated into UniProtKB/TrEMBL.
DT 20-JAN-2016, sequence version 1.
DT 27-MAR-2024, entry version 41.
DE RecName: Full=3,4-dihydroxy-2-butanone 4-phosphate synthase {ECO:0000256|HAMAP-Rule:MF_00180};
DE Short=DHBP synthase {ECO:0000256|HAMAP-Rule:MF_00180};
DE EC=4.1.99.12 {ECO:0000256|HAMAP-Rule:MF_00180};
GN Name=ribB {ECO:0000256|HAMAP-Rule:MF_00180};
GN ORFNames=ASG01_12965 {ECO:0000313|EMBL:KQR91910.1};
OS Chryseobacterium sp. Leaf180.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales; Weeksellaceae;
OC Chryseobacterium group; Chryseobacterium.
OX NCBI_TaxID=1736289 {ECO:0000313|EMBL:KQR91910.1, ECO:0000313|Proteomes:UP000051405};
RN [1] {ECO:0000313|EMBL:KQR91910.1, ECO:0000313|Proteomes:UP000051405}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Leaf180 {ECO:0000313|EMBL:KQR91910.1,
RC ECO:0000313|Proteomes:UP000051405};
RX PubMed=26633631; DOI=.1038/nature16192;
RA Bai Y., Muller D.B., Srinivas G., Garrido-Oter R., Potthoff E., Rott M.,
RA Dombrowski N., Munch P.C., Spaepen S., Remus-Emsermann M., Huttel B.,
RA McHardy A.C., Vorholt J.A., Schulze-Lefert P.;
RT "Functional overlap of the Arabidopsis leaf and root microbiota.";
RL Nature 528:364-369(2015).
RN [2] {ECO:0000313|Proteomes:UP000051405}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Leaf180 {ECO:0000313|Proteomes:UP000051405};
RA Garrido-Oter R., Mueller D.B.;
RL Submitted (OCT-2015) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|Proteomes:UP000051405}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Leaf180 {ECO:0000313|Proteomes:UP000051405};
RA Vorholt J.;
RT "Functional overlap of the Arabidopsis leaf and root microbiotas.";
RL Submitted (NOV-2015) 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.
CC {ECO:0000256|ARBA:ARBA00002284, ECO:0000256|HAMAP-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:0000256|ARBA:ARBA00000141,
CC ECO:0000256|HAMAP-Rule:MF_00180};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00180};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00180};
CC Note=Binds 2 divalent metal cations per subunit. Magnesium or
CC manganese. {ECO:0000256|HAMAP-Rule:MF_00180};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|ARBA:ARBA00001936};
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 -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00180}.
CC -!- SIMILARITY: Belongs to the DHBP synthase family. {ECO:0000256|HAMAP-
CC Rule:MF_00180}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the DHBP synthase
CC family. {ECO:0000256|ARBA:ARBA00005520}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KQR91910.1}.
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DR EMBL; LMPJ01000011; KQR91910.1; -; Genomic_DNA.
DR RefSeq; WP_055864583.1; NZ_LMPJ01000011.1.
DR AlphaFoldDB; A0A0Q5QDS7; -.
DR STRING; 1736289.ASG01_12965; -.
DR OrthoDB; 9793111at2; -.
DR UniPathway; UPA00275; UER00399.
DR Proteomes; UP000051405; Unassembled WGS sequence.
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 Gene3D; 3.40.50.10990; GTP cyclohydrolase II; 1.
DR HAMAP; MF_00180; RibB; 1.
DR InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
DR InterPro; IPR000422; DHBP_synthase_RibB.
DR InterPro; IPR032677; GTP_cyclohydro_II.
DR InterPro; IPR036144; RibA-like_sf.
DR NCBIfam; TIGR00506; ribB; 1.
DR PANTHER; PTHR21327; GTP CYCLOHYDROLASE II-RELATED; 1.
DR PANTHER; PTHR21327:SF48; RIBOFLAVIN BIOSYNTHESIS PROTEIN RIBBA; 1.
DR Pfam; PF00926; DHBP_synthase; 1.
DR Pfam; PF00925; GTP_cyclohydro2; 1.
DR PIRSF; PIRSF001259; RibA; 1.
DR SUPFAM; SSF142695; RibA-like; 1.
DR SUPFAM; SSF55821; YrdC/RibB; 1.
PE 3: Inferred from homology;
KW Lyase {ECO:0000256|HAMAP-Rule:MF_00180};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00180};
KW Manganese {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:UP000051405};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619, ECO:0000256|HAMAP-
KW Rule:MF_00180}.
FT DOMAIN 212..371
FT /note="GTP cyclohydrolase II"
FT /evidence="ECO:0000259|Pfam:PF00925"
FT BINDING 30..31
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 31
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 31
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 35
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 144..148
FT /ligand="D-ribulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:58121"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT BINDING 147
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT SITE 130
FT /note="Essential for catalytic activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
FT SITE 168
FT /note="Essential for catalytic activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00180"
SQ SEQUENCE 373 AA; 41540 MW; F77AF97E90A737BA CRC64;
MSDIKLNTIP EAIEDLKNGK MIIVVDDEDR ENEGDFLCAA ELVTPELINF MAYHGRGLIC
LPLPEKRCDE LGLEIMVSRS SDPKETAFTV SVDLLGNGTS TGISASDRAK TILALMDENS
KPSDFMRPGH IFPLRAKKGG VLKRAGHTEA AIDLTCLAGL KEGGVICEIM NEDGSMSRLP
ELMILAQKHD MKIISIEDLI HYQLKKGNLI DRIEERKVKT AFGEFDFLAF RETSNDQVHF
ALTKGSWTTD EPVLVRVQSS DSYFDVLTRL SNGEKPQLEK VTNMINEAGK GAIIFINNVS
NSENTLRKLQ QFLNFQDGQQ KHPTASFNYR DYGIGTQILK NLGINKFKVI TQNPDVKPQV
GGYDVEVVEM VQL
//
