(data stored in ACNUC9435 zone)

SWISSPROT: ISPD_CLOD6

ID   ISPD_CLOD6              Reviewed;         237 AA.
AC   Q18CD1;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   25-JUL-2006, sequence version 1.
DT   11-DEC-2019, entry version 81.
DE   RecName: Full=2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase {ECO:0000255|HAMAP-Rule:MF_00108};
DE            EC=2.7.7.60 {ECO:0000255|HAMAP-Rule:MF_00108};
DE   AltName: Full=4-diphosphocytidyl-2C-methyl-D-erythritol synthase {ECO:0000255|HAMAP-Rule:MF_00108};
DE   AltName: Full=MEP cytidylyltransferase {ECO:0000255|HAMAP-Rule:MF_00108};
DE            Short=MCT {ECO:0000255|HAMAP-Rule:MF_00108};
GN   Name=ispD {ECO:0000255|HAMAP-Rule:MF_00108}; OrderedLocusNames=CD630_00470;
OS   Clostridioides difficile (strain 630) (Peptoclostridium difficile).
OC   Bacteria; Firmicutes; Clostridia; Clostridiales; Peptostreptococcaceae;
OC   Clostridioides.
OX   NCBI_TaxID=272563;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=630;
RX   PubMed=16804543; DOI=10.1038/ng1830;
RA   Sebaihia M., Wren B.W., Mullany P., Fairweather N.F., Minton N.,
RA   Stabler R., Thomson N.R., Roberts A.P., Cerdeno-Tarraga A.M., Wang H.,
RA   Holden M.T.G., Wright A., Churcher C., Quail M.A., Baker S., Bason N.,
RA   Brooks K., Chillingworth T., Cronin A., Davis P., Dowd L., Fraser A.,
RA   Feltwell T., Hance Z., Holroyd S., Jagels K., Moule S., Mungall K.,
RA   Price C., Rabbinowitsch E., Sharp S., Simmonds M., Stevens K., Unwin L.,
RA   Whithead S., Dupuy B., Dougan G., Barrell B., Parkhill J.;
RT   "The multidrug-resistant human pathogen Clostridium difficile has a highly
RT   mobile, mosaic genome.";
RL   Nat. Genet. 38:779-786(2006).
CC   -!- FUNCTION: Catalyzes the formation of 4-diphosphocytidyl-2-C-methyl-D-
CC       erythritol from CTP and 2-C-methyl-D-erythritol 4-phosphate (MEP).
CC       {ECO:0000255|HAMAP-Rule:MF_00108}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-C-methyl-D-erythritol 4-phosphate + CTP + H(+) = 4-CDP-2-C-
CC         methyl-D-erythritol + diphosphate; Xref=Rhea:RHEA:13429,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:33019, ChEBI:CHEBI:37563,
CC         ChEBI:CHEBI:57823, ChEBI:CHEBI:58262; EC=2.7.7.60;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00108};
CC   -!- PATHWAY: Isoprenoid biosynthesis; isopentenyl diphosphate biosynthesis
CC       via DXP pathway; isopentenyl diphosphate from 1-deoxy-D-xylulose 5-
CC       phosphate: step 2/6. {ECO:0000255|HAMAP-Rule:MF_00108}.
CC   -!- SIMILARITY: Belongs to the IspD/TarI cytidylyltransferase family. IspD
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00108}.
DR   EMBL; AM180355; CAJ66861.1; -; Genomic_DNA.
DR   RefSeq; WP_011860629.1; NZ_CP010905.2.
DR   RefSeq; YP_001086510.1; NC_009089.1.
DR   SMR; Q18CD1; -.
DR   STRING; 272563.CD630_00470; -.
DR   EnsemblBacteria; CAJ66861; CAJ66861; CD630_00470.
DR   GeneID; 4916635; -.
DR   KEGG; cdf:CD630_00470; -.
DR   KEGG; pdc:CDIF630_00109; -.
DR   PATRIC; fig|272563.120.peg.51; -.
DR   eggNOG; ENOG4105CE5; Bacteria.
DR   eggNOG; COG1211; LUCA.
DR   HOGENOM; HOG000218563; -.
DR   KO; K00991; -.
DR   OMA; ERQHSVY; -.
DR   UniPathway; UPA00056; UER00093.
DR   Proteomes; UP000001978; Chromosome.
DR   GO; GO:0050518; F:2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019288; P:isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway; IEA:UniProtKB-UniPathway.
DR   GO; GO:0016114; P:terpenoid biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd02516; CDP-ME_synthetase; 1.
DR   Gene3D; 3.90.550.10; -; 1.
DR   HAMAP; MF_00108; IspD; 1.
DR   InterPro; IPR001228; IspD.
DR   InterPro; IPR034683; IspD/TarI.
DR   InterPro; IPR018294; ISPD_synthase_CS.
DR   InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR   Pfam; PF01128; IspD; 1.
DR   SUPFAM; SSF53448; SSF53448; 1.
DR   TIGRFAMs; TIGR00453; ispD; 1.
DR   PROSITE; PS01295; ISPD; 1.
PE   3: Inferred from homology;
DR   PRODOM; Q18CD1.
DR   SWISS-2DPAGE; Q18CD1.
KW   Isoprene biosynthesis; Nucleotidyltransferase; Reference proteome;
KW   Transferase.
FT   CHAIN           1..237
FT                   /note="2-C-methyl-D-erythritol 4-phosphate
FT                   cytidylyltransferase"
FT                   /id="PRO_1000094324"
FT   SITE            14
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            21
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            152
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            208
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
SQ   SEQUENCE   237 AA;  27300 MW;  0EF5027831816A0D CRC64;
     MYSVIIVAAG SGRRMNLDIN KQFIKLREKE IIAHTIQVFY ENINIDEIVV CIKKEEEDFF
     KENIINKYNF KNIKIAYGGK ERQDSIYNGL KKLDKNCDIV LIHDGARPFV DHRIINESIK
     VAKEKKAVVV GVPVSDTIKI VSDGTVKETP ERNLLWAAQT PQTFEYNLII DAYEQAYKNN
     YYGTDDSMLV ENIGQSVTMV MGSYENIKIT SPEDLNIAEQ ILNMEKRDEV NSRRRII
//

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