ID ISPDF_HELPS Reviewed; 406 AA.
AC B2USR1;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 27-MAR-2024, 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=HPSH_02215;
OS Helicobacter pylori (strain Shi470).
OC Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC Helicobacteraceae; Helicobacter.
OX NCBI_TaxID=512562;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Shi470;
RA Kersulyte D., Kalia A., Gilman R.H., Berg D.E.;
RT "Genome sequence of Helicobacter pylori from the remote Amazon: traces of
RT Asian ancestry of the first Americans.";
RL Submitted (MAY-2008) 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 ---------------------------------------------------------------------------
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; CP001072; ACD47893.1; -; Genomic_DNA.
DR RefSeq; WP_000052903.1; NC_010698.2.
DR AlphaFoldDB; B2USR1; -.
DR SMR; B2USR1; -.
DR KEGG; hps:HPSH_02215; -.
DR HOGENOM; CLU_042800_2_6_7; -.
DR UniPathway; UPA00056; UER00093.
DR UniPathway; UPA00056; UER00095.
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; 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase; 1.
DR HAMAP; MF_01520; IspDF; 1.
DR HAMAP; MF_00107; IspF; 1.
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 NCBIfam; TIGR00151; ispF; 1.
DR PANTHER; PTHR43181; 2-C-METHYL-D-ERYTHRITOL 2,4-CYCLODIPHOSPHATE SYNTHASE, CHLOROPLASTIC; 1.
DR PANTHER; PTHR43181:SF1; 2-C-METHYL-D-ERYTHRITOL 2,4-CYCLODIPHOSPHATE SYNTHASE, CHLOROPLASTIC; 1.
DR Pfam; PF01128; IspD; 1.
DR Pfam; PF02542; YgbB; 1.
DR SUPFAM; SSF69765; IpsF-like; 1.
DR SUPFAM; SSF53448; Nucleotide-diphospho-sugar transferases; 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; Transferase.
FT CHAIN 1..406
FT /note="Bifunctional enzyme IspD/IspF"
FT /id="PRO_1000146274"
FT REGION 1..247
FT /note="2-C-methyl-D-erythritol 4-phosphate
FT cytidylyltransferase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT REGION 248..406
FT /note="2-C-methyl-D-erythritol 2,4-cyclodiphosphate
FT synthase"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT BINDING 254..256
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 254
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT BINDING 256
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT BINDING 280..281
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 288
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT BINDING 302..304
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 307..311
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 378..381
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 385
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 388
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 48
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT SITE 55
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT SITE 175
FT /note="Positions MEP for the nucleophilic attack"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT SITE 227
FT /note="Positions MEP for the nucleophilic attack"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT SITE 280
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
FT SITE 379
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01520"
SQ SEQUENCE 406 AA; 45541 MW; 8EF36BDEF1FDEC6C CRC64;
MSLIRVNGEA FKLSLESLEE DPFENKETLE TLVKQTSVVL LAAGESRRFS QTIKKQWLRS
NHTPLWLSVY ESFKEALNFK EILLVVSELD YIYIKRHHPE IKLVRGGASR QESVRNALKI
IDSAYTLTSD VARGLANIEA LKSLFLTLQQ TSHYCIAPYL PCYDTAIYYN EVLDREAIKL
IQTPQLSHTK TLQSALNQGD FKDESSAILQ AFPDLVSYIE GSKDLHKLTT SDDLKHFALF
FNPAKDTFIG MGFDTHAFIK DKPMVLGGVV LDCEFGLKAH SDGDALLHAV IDAILGAIKG
GDIGEWFPDN DPQYKNASSK ELLKIVLDFS QSIGFELLEM GATIFSEIPK ITPYKPTILE
NLSQLLGLEK SQISLKATTM EKMGFIGKQE GLLVQAHVSM RYKQKL
//
