ID   ISPD_PORGI              Reviewed;         222 AA.
AC   Q7MUQ9;
DT   31-AUG-2004, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   03-AUG-2022, entry version 106.
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=PG_1434;
OS   Porphyromonas gingivalis (strain ATCC BAA-308 / W83).
OC   Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Porphyromonadaceae;
OC   Porphyromonas.
OX   NCBI_TaxID=242619;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-308 / W83;
RX   PubMed=12949112; DOI=10.1128/jb.185.18.5591-5601.2003;
RA   Nelson K.E., Fleischmann R.D., DeBoy R.T., Paulsen I.T., Fouts D.E.,
RA   Eisen J.A., Daugherty S.C., Dodson R.J., Durkin A.S., Gwinn M.L.,
RA   Haft D.H., Kolonay J.F., Nelson W.C., Mason T.M., Tallon L., Gray J.,
RA   Granger D., Tettelin H., Dong H., Galvin J.L., Duncan M.J., Dewhirst F.E.,
RA   Fraser C.M.;
RT   "Complete genome sequence of the oral pathogenic bacterium Porphyromonas
RT   gingivalis strain W83.";
RL   J. Bacteriol. 185:5591-5601(2003).
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AE015924; AAQ66487.1; -; Genomic_DNA.
DR   RefSeq; WP_005873783.1; NC_002950.2.
DR   AlphaFoldDB; Q7MUQ9; -.
DR   SMR; Q7MUQ9; -.
DR   STRING; 242619.PG_1434; -.
DR   EnsemblBacteria; AAQ66487; AAQ66487; PG_1434.
DR   KEGG; pgi:PG_1434; -.
DR   PATRIC; fig|242619.8.peg.1332; -.
DR   eggNOG; COG1211; Bacteria.
DR   HOGENOM; CLU_061281_2_2_10; -.
DR   OMA; ERQHSVY; -.
DR   OrthoDB; 1836139at2; -.
DR   BioCyc; PGIN242619:G1G02-1334-MON; -.
DR   UniPathway; UPA00056; UER00093.
DR   Proteomes; UP000000588; 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; IPR029044; Nucleotide-diphossugar_trans.
DR   Pfam; PF01128; IspD; 1.
DR   SUPFAM; SSF53448; SSF53448; 1.
PE   3: Inferred from homology;
KW   Isoprene biosynthesis; Nucleotidyltransferase; Reference proteome;
KW   Transferase.
FT   CHAIN           1..222
FT                   /note="2-C-methyl-D-erythritol 4-phosphate
FT                   cytidylyltransferase"
FT                   /id="PRO_0000075600"
FT   SITE            17
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            24
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            151
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT   SITE            206
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
SQ   SEQUENCE   222 AA;  24929 MW;  185769C264068E23 CRC64;
     MEQKRYALIV AGGHGLRMGA DRPKQFLLLA GLPVLMHTLN RFAPHVDAIV LVLPTDHHAY
     WQELCRKYDF SVSHRVVAGG NTRFASVRNG LQVVPDGVLV AVHDGVRPLV SAETIDACFD
     LAELKGAVAP CRPMTESLRY YATDGNYAVD RSRYVTVQTP QTFRSEWLRE AYRQPYEEYF
     TDDCSVYEHH FGRPVALIVG NIENIKLTTP LDLSLAKLLL TS