ID   ISPG_TROW8              Reviewed;         380 AA.
AC   Q83NE4;
DT   19-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 104.
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=TW586;
OS   Tropheryma whipplei (strain TW08/27) (Whipple's bacillus).
OC   Bacteria; Actinobacteria; Micrococcales; Tropherymataceae; Tropheryma.
OX   NCBI_TaxID=218496;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TW08/27;
RX   PubMed=12606174; DOI=10.1016/s0140-6736(03)12597-4;
RA   Bentley S.D., Maiwald M., Murphy L.D., Pallen M.J., Yeats C.A., Dover L.G.,
RA   Norbertczak H.T., Besra G.S., Quail M.A., Harris D.E., von Herbay A.,
RA   Goble A., Rutter S., Squares R., Squares S., Barrell B.G., Parkhill J.,
RA   Relman D.A.;
RT   "Sequencing and analysis of the genome of the Whipple's disease bacterium
RT   Tropheryma whipplei.";
RL   Lancet 361:637-644(2003).
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}.
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DR   EMBL; BX251412; CAD67252.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q83NE4; -.
DR   SMR; Q83NE4; -.
DR   KEGG; tws:TW586; -.
DR   HOGENOM; CLU_042258_0_0_11; -.
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..380
FT                   /note="4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase
FT                   (flavodoxin)"
FT                   /id="PRO_0000190649"
FT   BINDING         279
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         282
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         314
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
FT   BINDING         321
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00159"
SQ   SEQUENCE   380 AA;  40809 MW;  06901FCF91812587 CRC64;
     MSIDLGLPKV REVLSPRRKT RRIKLGKVFV GGDSPILVQS MTTTQTTNID ATLQQIAELT
     AAGCDIVRVA VPSRDDAQVL HIIAKKSQIP VIADIHFQPN YVYAAIDAGC AAVRVNPGNI
     RKFDDQIGKI AEKAKAAGVS IRIGVNAGSL DPRLLEKYGR PTAQALVDSA VWEAGLFEEY
     DFHDFKISVK HHDPVTMVKA YRLLAERGDW PLHLGVTEAG PAFQGTIKSS TAFAVLLAEG
     IGDTIRVSLS APPVEEVKVG LEILRSLGLR ERRLEIVSCP SCGRAQVDVY RLAEEVTKGL
     EKLTVPLRVA VMGCIVNGPG EAREADLGVA SGNGKGQIFV RGQVIKTVPE SEIVPTLLEE
     ANRLAGEMPF SSGSPTIAIV