ID   KDSA_BRASO              Reviewed;         287 AA.
AC   A4YVC7;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   28-JAN-2026, entry version 88.
DE   RecName: Full=2-dehydro-3-deoxyphosphooctonate aldolase {ECO:0000255|HAMAP-Rule:MF_00056};
DE            EC=2.5.1.55 {ECO:0000255|HAMAP-Rule:MF_00056};
DE   AltName: Full=3-deoxy-D-manno-octulosonic acid 8-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00056};
DE   AltName: Full=KDO-8-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00056};
DE            Short=KDO 8-P synthase {ECO:0000255|HAMAP-Rule:MF_00056};
DE            Short=KDOPS {ECO:0000255|HAMAP-Rule:MF_00056};
DE   AltName: Full=Phospho-2-dehydro-3-deoxyoctonate aldolase {ECO:0000255|HAMAP-Rule:MF_00056};
GN   Name=kdsA {ECO:0000255|HAMAP-Rule:MF_00056};
GN   OrderedLocusNames=BRADO4101;
OS   Bradyrhizobium sp. (strain ORS 278).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Alphaproteobacteria;
OC   Hyphomicrobiales; Nitrobacteraceae; Bradyrhizobium.
OX   NCBI_TaxID=114615;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ORS 278;
RX   PubMed=17540897; DOI=10.1126/science.1139548;
RA   Giraud E., Moulin L., Vallenet D., Barbe V., Cytryn E., Avarre J.-C.,
RA   Jaubert M., Simon D., Cartieaux F., Prin Y., Bena G., Hannibal L.,
RA   Fardoux J., Kojadinovic M., Vuillet L., Lajus A., Cruveiller S., Rouy Z.,
RA   Mangenot S., Segurens B., Dossat C., Franck W.L., Chang W.-S., Saunders E.,
RA   Bruce D., Richardson P., Normand P., Dreyfus B., Pignol D., Stacey G.,
RA   Emerich D., Vermeglio A., Medigue C., Sadowsky M.;
RT   "Legumes symbioses: absence of nod genes in photosynthetic bradyrhizobia.";
RL   Science 316:1307-1312(2007).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-arabinose 5-phosphate + phosphoenolpyruvate + H2O = 3-deoxy-
CC         alpha-D-manno-2-octulosonate-8-phosphate + phosphate;
CC         Xref=Rhea:RHEA:14053, ChEBI:CHEBI:15377, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:57693, ChEBI:CHEBI:58702, ChEBI:CHEBI:85985; EC=2.5.1.55;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00056};
CC   -!- PATHWAY: Carbohydrate biosynthesis; 3-deoxy-D-manno-octulosonate
CC       biosynthesis; 3-deoxy-D-manno-octulosonate from D-ribulose 5-phosphate:
CC       step 2/3. {ECO:0000255|HAMAP-Rule:MF_00056}.
CC   -!- PATHWAY: Bacterial outer membrane biogenesis; lipopolysaccharide
CC       biosynthesis. {ECO:0000255|HAMAP-Rule:MF_00056}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00056,
CC       ECO:0000255|PROSITE-ProRule:PRU01406}.
CC   -!- SIMILARITY: Belongs to the class-I DAHP synthase family. KdsA
CC       subfamily. {ECO:0000255|PROSITE-ProRule:PRU01406}.
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DR   EMBL; CU234118; CAL77853.1; -; Genomic_DNA.
DR   RefSeq; WP_011926983.1; NC_009445.1.
DR   AlphaFoldDB; A4YVC7; -.
DR   SMR; A4YVC7; -.
DR   STRING; 114615.BRADO4101; -.
DR   KEGG; bra:BRADO4101; -.
DR   eggNOG; COG2877; Bacteria.
DR   HOGENOM; CLU_036666_0_0_5; -.
DR   OrthoDB; 9776934at2; -.
DR   UniPathway; UPA00030; -.
DR   UniPathway; UPA00357; UER00474.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008676; F:3-deoxy-8-phosphooctulonate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019294; P:keto-3-deoxy-D-manno-octulosonic acid biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.20.20.70; Aldolase class I; 1.
DR   HAMAP; MF_00056; KDO8P_synth; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR006218; DAHP1/KDSA.
DR   InterPro; IPR006269; KDO8P_synthase.
DR   NCBIfam; TIGR01362; KDO8P_synth; 1.
DR   NCBIfam; NF003543; PRK05198.1; 1.
DR   PANTHER; PTHR21057; PHOSPHO-2-DEHYDRO-3-DEOXYHEPTONATE ALDOLASE; 1.
DR   Pfam; PF00793; DAHP_synth_1; 1.
DR   SUPFAM; SSF51569; Aldolase; 1.
DR   PROSITE; PS52061; DAHPS_I; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Lipopolysaccharide biosynthesis; Transferase.
FT   CHAIN           1..287
FT                   /note="2-dehydro-3-deoxyphosphooctonate aldolase"
FT                   /id="PRO_0000304434"
FT   DOMAIN          21..278
FT                   /note="DAHPS class-I TIM-barrel"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         31
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         60
FT                   /ligand="phosphoenolpyruvate"
FT                   /ligand_id="ChEBI:CHEBI:58702"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         65
FT                   /ligand="phosphoenolpyruvate"
FT                   /ligand_id="ChEBI:CHEBI:58702"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         143
FT                   /ligand="phosphoenolpyruvate"
FT                   /ligand_id="ChEBI:CHEBI:58702"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         173
FT                   /ligand="phosphoenolpyruvate"
FT                   /ligand_id="ChEBI:CHEBI:58702"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         206
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         243
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
FT   BINDING         254
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01406"
SQ   SEQUENCE   287 AA;  29684 MW;  4FC832A4B31E912A CRC64;
     MNAPISAAPV VTAGSVRFGN QLPLAVIAGP CQLESRGHAL EVASALKEIA TRLNISLVYK
     TSFDKANRTS GSAARGLGLA QSLPIFAEIR SSLGLPVLTD VHDASQCAEV AQAVDILQIP
     AFLCRQTDLL LAAAATGKVV NVKKGQFLAP WDMANVVAKI TGAGNPNVLA TERGVSFGYN
     TLISDMRSLP IMAKTTGAPV IFDATHSVQQ PGGQGTSSGG QREFVPVLAR AAVAVGVAGV
     FIETHPDPDH APSDGPNMVP LAQFEGLLRT LMAFDALAKG QAADAIR
//