ID   KDSB_CHLAB              Reviewed;         254 AA.
AC   Q5L5S2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-JUN-2005, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=3-deoxy-manno-octulosonate cytidylyltransferase {ECO:0000255|HAMAP-Rule:MF_00057};
DE            EC=2.7.7.38 {ECO:0000255|HAMAP-Rule:MF_00057};
DE   AltName: Full=CMP-2-keto-3-deoxyoctulosonic acid synthase {ECO:0000255|HAMAP-Rule:MF_00057};
DE            Short=CKS {ECO:0000255|HAMAP-Rule:MF_00057};
DE            Short=CMP-KDO synthase {ECO:0000255|HAMAP-Rule:MF_00057};
GN   Name=kdsB {ECO:0000255|HAMAP-Rule:MF_00057}; OrderedLocusNames=CAB569;
OS   Chlamydia abortus (strain DSM 27085 / S26/3) (Chlamydophila abortus).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=218497;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 27085 / S26/3;
RX   PubMed=15837807; DOI=10.1101/gr.3684805;
RA   Thomson N.R., Yeats C., Bell K., Holden M.T.G., Bentley S.D.,
RA   Livingstone M., Cerdeno-Tarraga A.-M., Harris B., Doggett J., Ormond D.,
RA   Mungall K., Clarke K., Feltwell T., Hance Z., Sanders M., Quail M.A.,
RA   Price C., Barrell B.G., Parkhill J., Longbottom D.;
RT   "The Chlamydophila abortus genome sequence reveals an array of variable
RT   proteins that contribute to interspecies variation.";
RL   Genome Res. 15:629-640(2005).
CC   -!- FUNCTION: Activates KDO (a required 8-carbon sugar) for incorporation
CC       into bacterial lipopolysaccharide in Gram-negative bacteria.
CC       {ECO:0000255|HAMAP-Rule:MF_00057}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=3-deoxy-alpha-D-manno-oct-2-ulosonate + CTP = CMP-3-deoxy-
CC         beta-D-manno-octulosonate + diphosphate; Xref=Rhea:RHEA:23448,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:37563, ChEBI:CHEBI:85986,
CC         ChEBI:CHEBI:85987; EC=2.7.7.38; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00057};
CC   -!- PATHWAY: Nucleotide-sugar biosynthesis; CMP-3-deoxy-D-manno-
CC       octulosonate biosynthesis; CMP-3-deoxy-D-manno-octulosonate from 3-
CC       deoxy-D-manno-octulosonate and CTP: step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_00057}.
CC   -!- PATHWAY: Bacterial outer membrane biogenesis; lipopolysaccharide
CC       biosynthesis. {ECO:0000255|HAMAP-Rule:MF_00057}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00057}.
CC   -!- SIMILARITY: Belongs to the KdsB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00057}.
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DR   EMBL; CR848038; CAH64017.1; -; Genomic_DNA.
DR   RefSeq; WP_011097169.1; NC_004552.2.
DR   AlphaFoldDB; Q5L5S2; -.
DR   SMR; Q5L5S2; -.
DR   EnsemblBacteria; CAH64017; CAH64017; CAB569.
DR   KEGG; cab:CAB569; -.
DR   eggNOG; COG1212; Bacteria.
DR   HOGENOM; CLU_065038_0_1_0; -.
DR   OMA; FMATCAK; -.
DR   OrthoDB; 1345588at2; -.
DR   UniPathway; UPA00030; -.
DR   UniPathway; UPA00358; UER00476.
DR   Proteomes; UP000001012; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008690; F:3-deoxy-manno-octulosonate cytidylyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0033468; P:CMP-keto-3-deoxy-D-manno-octulosonic acid biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009103; P:lipopolysaccharide biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd02517; CMP-KDO-Synthetase; 1.
DR   Gene3D; 3.90.550.10; -; 1.
DR   HAMAP; MF_00057; KdsB; 1.
DR   InterPro; IPR003329; Cytidylyl_trans.
DR   InterPro; IPR004528; KdsB.
DR   InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR   Pfam; PF02348; CTP_transf_3; 1.
DR   SUPFAM; SSF53448; SSF53448; 1.
DR   TIGRFAMs; TIGR00466; kdsB; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Lipopolysaccharide biosynthesis; Nucleotidyltransferase;
KW   Transferase.
FT   CHAIN           1..254
FT                   /note="3-deoxy-manno-octulosonate cytidylyltransferase"
FT                   /id="PRO_1000003353"
SQ   SEQUENCE   254 AA;  28409 MW;  812C1F1D4D6F1BA3 CRC64;
     MEEQTFISKK VGVLPARWGS VRFPGKPLAM ILGKSLIQRT YENIIQSETL DKVVVATDDQ
     RIMDHVLDFG GACLMTSPEC ANGTERMAET VSRYFPEAEI MVNIQGDEPC LRHTVVDALV
     RKLEEHPEIQ MVTPVAQTTD SHEILTNQKV KCVFDKNGKA LYFSRSPIPH ILKKETPIYL
     HIGVYAFRRS ALFSYIASAP SPLSQAEDLE QLRVLEHGGS IHVCVVEAKS PSVDYPEDIS
     KVEEYLTCHS SASF