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ISPDF_NITHX
ID   ISPDF_NITHX             Reviewed;         403 AA.
AC   Q1QM99;
DT   26-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 2.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Bifunctional enzyme IspD/IspF {ECO:0000255|HAMAP-Rule:MF_01520};
DE   Includes:
DE     RecName: Full=2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase {ECO:0000255|HAMAP-Rule:MF_01520};
DE              EC=2.7.7.60 {ECO:0000255|HAMAP-Rule:MF_01520};
DE     AltName: Full=4-diphosphocytidyl-2C-methyl-D-erythritol synthase {ECO:0000255|HAMAP-Rule:MF_01520};
DE     AltName: Full=MEP cytidylyltransferase {ECO:0000255|HAMAP-Rule:MF_01520};
DE              Short=MCT {ECO:0000255|HAMAP-Rule:MF_01520};
DE   Includes:
DE     RecName: Full=2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase {ECO:0000255|HAMAP-Rule:MF_01520};
DE              Short=MECDP-synthase {ECO:0000255|HAMAP-Rule:MF_01520};
DE              Short=MECPP-synthase {ECO:0000255|HAMAP-Rule:MF_01520};
DE              Short=MECPS {ECO:0000255|HAMAP-Rule:MF_01520};
DE              EC=4.6.1.12 {ECO:0000255|HAMAP-Rule:MF_01520};
GN   Name=ispDF {ECO:0000255|HAMAP-Rule:MF_01520}; OrderedLocusNames=Nham_1834;
OS   Nitrobacter hamburgensis (strain DSM 10229 / NCIMB 13809 / X14).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Nitrobacter.
OX   NCBI_TaxID=323097;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 10229 / NCIMB 13809 / X14;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Ivanova N., Ward B., Arp D., Klotz M., Stein L.,
RA   O'Mullan G., Starkenburg S., Sayavedra L., Poret-Peterson A.T.,
RA   Gentry M.E., Bruce D., Richardson P.;
RT   "Complete sequence of chromosome of Nitrobacter hamburgensis X14.";
RL   Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Bifunctional enzyme that catalyzes the formation of 4-
CC       diphosphocytidyl-2-C-methyl-D-erythritol from CTP and 2-C-methyl-D-
CC       erythritol 4-phosphate (MEP) (IspD), and catalyzes the conversion of 4-
CC       diphosphocytidyl-2-C-methyl-D-erythritol 2-phosphate (CDP-ME2P) to 2-C-
CC       methyl-D-erythritol 2,4-cyclodiphosphate (ME-CPP) with a corresponding
CC       release of cytidine 5-monophosphate (CMP) (IspF). {ECO:0000255|HAMAP-
CC       Rule:MF_01520}.
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_01520};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4-CDP-2-C-methyl-D-erythritol 2-phosphate = 2-C-methyl-D-
CC         erythritol 2,4-cyclic diphosphate + CMP; Xref=Rhea:RHEA:23864,
CC         ChEBI:CHEBI:57919, ChEBI:CHEBI:58483, ChEBI:CHEBI:60377; EC=4.6.1.12;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01520};
CC   -!- COFACTOR:
CC       Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01520};
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_01520}.
CC   -!- PATHWAY: Isoprenoid biosynthesis; isopentenyl diphosphate biosynthesis
CC       via DXP pathway; isopentenyl diphosphate from 1-deoxy-D-xylulose 5-
CC       phosphate: step 4/6. {ECO:0000255|HAMAP-Rule:MF_01520}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the IspD/TarI
CC       cytidylyltransferase family. IspD subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01520}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the IspF family.
CC       {ECO:0000255|HAMAP-Rule:MF_01520}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABE62648.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; CP000319; ABE62648.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_041357891.1; NC_007964.1.
DR   AlphaFoldDB; Q1QM99; -.
DR   SMR; Q1QM99; -.
DR   STRING; 323097.Nham_1834; -.
DR   PRIDE; Q1QM99; -.
DR   EnsemblBacteria; ABE62648; ABE62648; Nham_1834.
DR   KEGG; nha:Nham_1834; -.
DR   eggNOG; COG0245; Bacteria.
DR   eggNOG; COG1211; Bacteria.
DR   HOGENOM; CLU_042800_0_1_5; -.
DR   OrthoDB; 525632at2; -.
DR   UniPathway; UPA00056; UER00093.
DR   UniPathway; UPA00056; UER00095.
DR   Proteomes; UP000001953; Chromosome.
DR   GO; GO:0008685; F:2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0050518; F:2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
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   CDD; cd00554; MECDP_synthase; 1.
DR   Gene3D; 3.30.1330.50; -; 1.
DR   Gene3D; 3.90.550.10; -; 1.
DR   HAMAP; MF_00108; IspD; 1.
DR   HAMAP; MF_01520; IspDF; 1.
DR   HAMAP; MF_00107; IspF; 1.
DR   InterPro; IPR001228; IspD.
DR   InterPro; IPR026596; IspD/F.
DR   InterPro; IPR034683; IspD/TarI.
DR   InterPro; IPR018294; ISPD_synthase_CS.
DR   InterPro; IPR003526; MECDP_synthase.
DR   InterPro; IPR020555; MECDP_synthase_CS.
DR   InterPro; IPR036571; MECDP_synthase_sf.
DR   InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR   PANTHER; PTHR43181; PTHR43181; 1.
DR   Pfam; PF01128; IspD; 1.
DR   Pfam; PF02542; YgbB; 1.
DR   SUPFAM; SSF53448; SSF53448; 1.
DR   SUPFAM; SSF69765; SSF69765; 1.
DR   TIGRFAMs; TIGR00453; ispD; 1.
DR   TIGRFAMs; TIGR00151; ispF; 1.
DR   PROSITE; PS01295; ISPD; 1.
DR   PROSITE; PS01350; ISPF; 1.
PE   3: Inferred from homology;
KW   Isoprene biosynthesis; Lyase; Metal-binding; Multifunctional enzyme;
KW   Nucleotidyltransferase; Reference proteome; Transferase.
FT   CHAIN           1..403
FT                   /note="Bifunctional enzyme IspD/IspF"
FT                   /id="PRO_0000292856"
FT   REGION          1..234
FT                   /note="2-C-methyl-D-erythritol 4-phosphate
FT                   cytidylyltransferase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   REGION          235..403
FT                   /note="2-C-methyl-D-erythritol 2,4-cyclodiphosphate
FT                   synthase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         241..243
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         241
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         243
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         267..268
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         275
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         289..291
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         365..368
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         372
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   BINDING         375
FT                   /ligand="4-CDP-2-C-methyl-D-erythritol 2-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57919"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            19
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            26
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            156
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            213
FT                   /note="Positions MEP for the nucleophilic attack"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            267
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT   SITE            366
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
SQ   SEQUENCE   403 AA;  42798 MW;  C18698298DDC8335 CRC64;
     MPTSKRTAAI IVAAGRGLRA GTGGPKQYRT IAGRTVIARA MEAFCDHPDV FAVQPVLNPD
     DLAMFNQAVA GFRYRPPANG GATRQASVHA GLEALAADAP DIVLIHDAAR PFATPALIRR
     AIEATDITGA AVPVIPVTDT IKQVDASGAV NATPDRAKLR IAQTPQAFRF DVILDAHRRA
     ARDGRDDFTD DAALAEWVGL TVATFEGDAA NMKLTTPEDF VREEARLAAM LGDIRTGTGY
     DVHAFGDGDH VMLCGVKVPH NRGFLAHSDG DVGLHALVDA ILGALADGDI GSHFPPSDPQ
     WKGAASDKFL KYAVDRVAAR GGRIANLEVT MICERPKIGP LRDTMRARIA EITGVAISRI
     AVKATTSERL GFTGREEGIA TTASATVRLP WNDSDQEDKG WST
 
 
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