ID   CDPAS_HALWD             Reviewed;         181 AA.
AC   Q18FD0;
DT   21-AUG-2007, integrated into UniProtKB/Swiss-Prot.
DT   25-JUL-2006, sequence version 1.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=CDP-archaeol synthase {ECO:0000255|HAMAP-Rule:MF_01117};
DE            EC=2.7.7.67 {ECO:0000255|HAMAP-Rule:MF_01117};
DE   AltName: Full=CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol synthase {ECO:0000255|HAMAP-Rule:MF_01117};
GN   Name=carS {ECO:0000255|HAMAP-Rule:MF_01117}; OrderedLocusNames=HQ_3230A;
OS   Haloquadratum walsbyi (strain DSM 16790 / HBSQ001).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Haloferacales;
OC   Haloferacaceae; Haloquadratum.
OX   NCBI_TaxID=362976;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 16790 / HBSQ001;
RX   PubMed=16820047; DOI=10.1186/1471-2164-7-169;
RA   Bolhuis H., Palm P., Wende A., Falb M., Rampp M., Rodriguez-Valera F.,
RA   Pfeiffer F., Oesterhelt D.;
RT   "The genome of the square archaeon Haloquadratum walsbyi: life at the
RT   limits of water activity.";
RL   BMC Genomics 7:169-169(2006).
CC   -!- FUNCTION: Catalyzes the formation of CDP-2,3-bis-(O-geranylgeranyl)-sn-
CC       glycerol (CDP-archaeol) from 2,3-bis-(O-geranylgeranyl)-sn-glycerol 1-
CC       phosphate (DGGGP) and CTP. This reaction is the third ether-bond-
CC       formation step in the biosynthesis of archaeal membrane lipids.
CC       {ECO:0000255|HAMAP-Rule:MF_01117}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2,3-bis-O-(geranylgeranyl)-sn-glycerol 1-phosphate + CTP +
CC         H(+) = CDP-2,3-bis-O-(geranylgeranyl)-sn-glycerol + diphosphate;
CC         Xref=Rhea:RHEA:25690, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:37563, ChEBI:CHEBI:58837, ChEBI:CHEBI:58838; EC=2.7.7.67;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01117};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01117};
CC   -!- PATHWAY: Membrane lipid metabolism; glycerophospholipid metabolism.
CC       {ECO:0000255|HAMAP-Rule:MF_01117}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01117};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01117}.
CC   -!- SIMILARITY: Belongs to the CDP-archaeol synthase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01117}.
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DR   EMBL; AM180088; CAJ53328.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q18FD0; -.
DR   SMR; Q18FD0; -.
DR   STRING; 362976.HQ_3230A; -.
DR   EnsemblBacteria; CAJ53328; CAJ53328; HQ_3230A.
DR   KEGG; hwa:HQ_3230A; -.
DR   eggNOG; arCOG04106; Archaea.
DR   HOGENOM; CLU_105710_0_0_2; -.
DR   OMA; GKTWRGT; -.
DR   UniPathway; UPA00940; -.
DR   Proteomes; UP000001975; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0043338; F:CTP:2,3-di-O-geranylgeranyl-sn-glycero-1-phosphate cytidyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046474; P:glycerophospholipid biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01117; CDP_archaeol_synth; 1.
DR   InterPro; IPR032690; CarS.
DR   InterPro; IPR002726; CarS_archaea.
DR   PANTHER; PTHR39650; PTHR39650; 1.
DR   Pfam; PF01864; CarS-like; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Lipid biosynthesis; Lipid metabolism; Magnesium; Membrane;
KW   Phospholipid biosynthesis; Phospholipid metabolism; Reference proteome;
KW   Transferase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..181
FT                   /note="CDP-archaeol synthase"
FT                   /id="PRO_0000298274"
FT   TRANSMEM        56..76
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01117"
FT   TRANSMEM        88..108
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01117"
FT   TRANSMEM        120..140
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01117"
FT   TRANSMEM        143..163
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01117"
SQ   SEQUENCE   181 AA;  18930 MW;  370B7AED14720628 CRC64;
     MDMIIEVVAT AVWTMLPAYV PNNVAVLTGG GAPIDGGRTL GGRRILGDGK TWRGTGFGTL
     AGVAVALGLN TILPILTRVG ADLTPFSLEA AVGLAFGAML GDIVASFFKR RSGRRRGVPF
     PVIDQLDFVV GGILCAVILA PRWVIATFTP PVVIAVFILT PILHLGTNAG AYVLGFKKEP
     Y