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Database: UniProt
Entry: E5B2A3_ERWAM
LinkDB: E5B2A3_ERWAM
Original site: E5B2A3_ERWAM 
ID   E5B2A3_ERWAM            Unreviewed;       234 AA.
AC   E5B2A3;
DT   08-FEB-2011, integrated into UniProtKB/TrEMBL.
DT   08-FEB-2011, sequence version 1.
DT   13-SEP-2023, entry version 41.
DE   RecName: Full=2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase {ECO:0000256|HAMAP-Rule:MF_00108};
DE            EC=2.7.7.60 {ECO:0000256|HAMAP-Rule:MF_00108};
DE   AltName: Full=4-diphosphocytidyl-2C-methyl-D-erythritol synthase {ECO:0000256|HAMAP-Rule:MF_00108};
DE   AltName: Full=MEP cytidylyltransferase {ECO:0000256|HAMAP-Rule:MF_00108};
DE            Short=MCT {ECO:0000256|HAMAP-Rule:MF_00108};
GN   Name=ispD {ECO:0000256|HAMAP-Rule:MF_00108,
GN   ECO:0000313|EMBL:CBX79605.1};
GN   ORFNames=EAIL5_0785 {ECO:0000313|EMBL:CBX79605.1};
OS   Erwinia amylovora ATCC BAA-2158.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Erwinia.
OX   NCBI_TaxID=889211 {ECO:0000313|EMBL:CBX79605.1};
RN   [1] {ECO:0000313|EMBL:CBX79605.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=ATCC BAA-2158 {ECO:0000313|EMBL:CBX79605.1};
RA   Powney R., Smits T.H., Sawbridge T., Frey B., Blom J., Frey J.E.,
RA   Plummer K.M., Beer S.V., Luck J., Duffy B., Rodoni B.;
RT   "Genome Sequence of an Erwinia amylovora Strain with Pathogenicity
RT   Restricted to Rubus Plants.";
RL   J. Bacteriol. 193:785-786(2011).
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:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_00108}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00108}.
CC   -!- SIMILARITY: Belongs to the IspD/TarI cytidylyltransferase family. IspD
CC       subfamily. {ECO:0000256|HAMAP-Rule:MF_00108}.
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DR   EMBL; FR719187; CBX79605.1; -; Genomic_DNA.
DR   AlphaFoldDB; E5B2A3; -.
DR   UniPathway; UPA00056; UER00093.
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   HAMAP; MF_00108; IspD; 1.
DR   InterPro; IPR001228; IspD.
DR   InterPro; IPR034683; IspD/TarI.
DR   InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR   NCBIfam; TIGR00453; ispD; 1.
DR   PANTHER; PTHR32125; 2-C-METHYL-D-ERYTHRITOL 4-PHOSPHATE CYTIDYLYLTRANSFERASE, CHLOROPLASTIC; 1.
DR   PANTHER; PTHR32125:SF4; 2-C-METHYL-D-ERYTHRITOL 4-PHOSPHATE CYTIDYLYLTRANSFERASE, CHLOROPLASTIC; 1.
DR   Pfam; PF01128; IspD; 1.
DR   SUPFAM; SSF53448; Nucleotide-diphospho-sugar transferases; 1.
PE   3: Inferred from homology;
KW   Isoprene biosynthesis {ECO:0000256|ARBA:ARBA00023229, ECO:0000256|HAMAP-
KW   Rule:MF_00108};
KW   Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695, ECO:0000256|HAMAP-
KW   Rule:MF_00108};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_00108}.
FT   SITE            22
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00108"
FT   SITE            29
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00108"
FT   SITE            159
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00108"
FT   SITE            215
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00108"
SQ   SEQUENCE   234 AA;  25041 MW;  FAC1EFC0D64F84C2 CRC64;
     MNNLISLSNV VAVVPAAGIG SRMLSGCPKQ YLTICGKTIL EHSLAALLAH PAVSRVVVAL
     SPQDSHFHQL PIARDARVSA VTGGLQRADS VLAGLQAASS AQWALVHDAA RPCLHPEDLS
     RLLALTASSK VGGILAAPVR DTMKRAISGR SDIDHTVERE ALWHALTPQL FPVGLLRDCL
     LRALGEGANI TDEASALEYC GYHPELVTGR SDNLKVTRPE DLALAQFYLT QRHR
//
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