ISPD_BACC1
ID ISPD_BACC1 Reviewed; 226 AA.
AC Q73FC1;
DT 31-AUG-2004, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 99.
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=BCE_0085;
OS Bacillus cereus (strain ATCC 10987 / NRS 248).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC Bacillus cereus group.
OX NCBI_TaxID=222523;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 10987 / NRS 248;
RX PubMed=14960714; DOI=10.1093/nar/gkh258;
RA Rasko D.A., Ravel J., Oekstad O.A., Helgason E., Cer R.Z., Jiang L.,
RA Shores K.A., Fouts D.E., Tourasse N.J., Angiuoli S.V., Kolonay J.F.,
RA Nelson W.C., Kolstoe A.-B., Fraser C.M., Read T.D.;
RT "The genome sequence of Bacillus cereus ATCC 10987 reveals metabolic
RT adaptations and a large plasmid related to Bacillus anthracis pXO1.";
RL Nucleic Acids Res. 32:977-988(2004).
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}.
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DR EMBL; AE017194; AAS39021.1; -; Genomic_DNA.
DR RefSeq; WP_000288294.1; NC_003909.8.
DR AlphaFoldDB; Q73FC1; -.
DR SMR; Q73FC1; -.
DR EnsemblBacteria; AAS39021; AAS39021; BCE_0085.
DR GeneID; 59159735; -.
DR KEGG; bca:BCE_0085; -.
DR HOGENOM; CLU_061281_2_2_9; -.
DR OMA; ERQHSVY; -.
DR UniPathway; UPA00056; UER00093.
DR Proteomes; UP000002527; 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;
KW Isoprene biosynthesis; Nucleotidyltransferase; Transferase.
FT CHAIN 1..226
FT /note="2-C-methyl-D-erythritol 4-phosphate
FT cytidylyltransferase"
FT /id="PRO_0000075547"
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 151
FT /note="Positions MEP for the nucleophilic attack"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
FT SITE 207
FT /note="Positions MEP for the nucleophilic attack"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00108"
SQ SEQUENCE 226 AA; 25106 MW; 8F59A8FFE80B1EAB CRC64;
MYTLIIPAAG QGKRMGAGKN KLFLLINEVP IIVHTLRAFE KDKACKNIIM AINEEERPYF
EELMQKYPVK KPVQFIQGGA ERQDSVYNAI QHTSDVEYVL VHDGARPFVT NKVIQDVLTA
AEKYGASICA VPVKDTVKKV EQGVVVETVE RSQLKAVQTP QGFSVSLLLE AHRSAKQSCF
LGTDDASLVE RIGKQVGVVE GSYYNIKVTT PEDLLIAESF LHVQKK
