ID   ISPG_BACAA              Reviewed;         370 AA.
AC   C3P8I5;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2009, sequence version 1.
DT   03-AUG-2022, entry version 71.
DE   RecName: Full=4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (flavodoxin) {ECO:0000255|HAMAP-Rule:MF_00159};
DE            EC=1.17.7.3 {ECO:0000255|HAMAP-Rule:MF_00159};
DE   AltName: Full=1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate synthase {ECO:0000255|HAMAP-Rule:MF_00159};
GN   Name=ispG {ECO:0000255|HAMAP-Rule:MF_00159}; OrderedLocusNames=BAA_4522;
OS   Bacillus anthracis (strain A0248).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=592021;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=A0248;
RA   Dodson R.J., Munk A.C., Bruce D., Detter C., Tapia R., Sutton G., Sims D.,
RA   Brettin T.;
RT   "Genome sequence of Bacillus anthracis A0248.";
RL   Submitted (APR-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Converts 2C-methyl-D-erythritol 2,4-cyclodiphosphate (ME-
CC       2,4cPP) into 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate.
CC       {ECO:0000255|HAMAP-Rule:MF_00159}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2E)-4-hydroxy-3-methylbut-2-enyl diphosphate + 2 H(+) + H2O +
CC         oxidized [flavodoxin] = 2-C-methyl-D-erythritol 2,4-cyclic
CC         diphosphate + reduced [flavodoxin]; Xref=Rhea:RHEA:43604, Rhea:RHEA-
CC         COMP:10622, Rhea:RHEA-COMP:10623, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC         ChEBI:CHEBI:58483, ChEBI:CHEBI:128753; EC=1.17.7.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00159};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00159};
CC       Note=Binds 1 [4Fe-4S] cluster. {ECO:0000255|HAMAP-Rule:MF_00159};
CC   -!- PATHWAY: Isoprenoid biosynthesis; isopentenyl diphosphate biosynthesis
CC       via DXP pathway; isopentenyl diphosphate from 1-deoxy-D-xylulose 5-
CC       phosphate: step 5/6. {ECO:0000255|HAMAP-Rule:MF_00159}.
CC   -!- SIMILARITY: Belongs to the IspG family. {ECO:0000255|HAMAP-
CC       Rule:MF_00159}.
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; CP001598; ACQ50959.1; -; Genomic_DNA.
DR   AlphaFoldDB; C3P8I5; -.
DR   SMR; C3P8I5; -.
DR   KEGG; bai:BAA_4522; -.
DR   HOGENOM; CLU_042258_0_0_9; -.
DR   OMA; PTCGRTQ; -.
DR   UniPathway; UPA00056; UER00096.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046429; F:4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005506; F:iron ion binding; IEA:InterPro.
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   Gene3D; 3.20.20.20; -; 1.
DR   Gene3D; 3.30.413.10; -; 1.
DR   HAMAP; MF_00159; IspG; 1.
DR   InterPro; IPR011005; Dihydropteroate_synth-like.
DR   InterPro; IPR016425; IspG_bac.
DR   InterPro; IPR004588; IspG_bac-typ.
DR   InterPro; IPR045854; NO2/SO3_Rdtase_4Fe4S_sf.
DR   PANTHER; PTHR30454; PTHR30454; 1.
DR   Pfam; PF04551; GcpE; 1.
DR   PIRSF; PIRSF004640; IspG; 1.
DR   SUPFAM; SSF51717; SSF51717; 1.
DR   SUPFAM; SSF56014; SSF56014; 1.
DR   TIGRFAMs; TIGR00612; ispG_gcpE; 1.
PE   3: Inferred from homology;
KW   4Fe-4S; Iron; Iron-sulfur; Isoprene biosynthesis; Metal-binding;
KW   Oxidoreductase.
FT   CHAIN           1..370
FT                   /note="4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase
FT                   (flavodoxin)"
FT                   /id="PRO_1000123431"
FT   BINDING         268
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         271
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         303
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         310
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
SQ   SEQUENCE   370 AA;  40027 MW;  6F092C1658906340 CRC64;
     MNEMTHRTKT RPVKVGNLTI GGNNELIIQS MTTTKTHDVE ATVAEIKRLE EAGCQVVRVA
     VPDERAANAI ADIKKQINIP LVADIHFDYR LALKAIEGGI DKVRINPGNI GRRHKVEAVV
     NAAKERGIPI RIGVNAGSLE RHILEKYGYP TADGMVESAL HHIKILEDLD FHDIIVSMKA
     SDVNLAIEAY EKAARAFDYP LHLGITESGT LFAGTVKSAA GLGAILNKGI GNTLRISLSA
     DPVEEVKVAR ELLKSFGLAS NAATLISCPT CGRIEIDLIS IANEVEEYIS TLQVPIKVAV
     LGCAVNGPGE AREADIGIAG ARGEGLLFRK GQVVRKVPEE IMVEELKKEI DVIAAEMAAE
     REKEKETQEQ