ISPH_THET8
ID ISPH_THET8 Reviewed; 340 AA.
AC Q5SMC8;
DT 19-JUL-2005, integrated into UniProtKB/Swiss-Prot.
DT 21-DEC-2004, sequence version 1.
DT 03-AUG-2022, entry version 99.
DE RecName: Full=4-hydroxy-3-methylbut-2-enyl diphosphate reductase {ECO:0000255|HAMAP-Rule:MF_00191};
DE Short=HMBPP reductase {ECO:0000255|HAMAP-Rule:MF_00191};
DE EC=1.17.7.4 {ECO:0000255|HAMAP-Rule:MF_00191};
GN Name=ispH {ECO:0000255|HAMAP-Rule:MF_00191}; OrderedLocusNames=TTHA0015;
OS Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8).
OC Bacteria; Deinococcus-Thermus; Deinococci; Thermales; Thermaceae; Thermus.
OX NCBI_TaxID=300852;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27634 / DSM 579 / HB8;
RA Masui R., Kurokawa K., Nakagawa N., Tokunaga F., Koyama Y., Shibata T.,
RA Oshima T., Yokoyama S., Yasunaga T., Kuramitsu S.;
RT "Complete genome sequence of Thermus thermophilus HB8.";
RL Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the conversion of 1-hydroxy-2-methyl-2-(E)-butenyl
CC 4-diphosphate (HMBPP) into a mixture of isopentenyl diphosphate (IPP)
CC and dimethylallyl diphosphate (DMAPP). Acts in the terminal step of the
CC DOXP/MEP pathway for isoprenoid precursor biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_00191}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + isopentenyl diphosphate + 2 oxidized [2Fe-2S]-
CC [ferredoxin] = (2E)-4-hydroxy-3-methylbut-2-enyl diphosphate + 2 H(+)
CC + 2 reduced [2Fe-2S]-[ferredoxin]; Xref=Rhea:RHEA:24488, Rhea:RHEA-
CC COMP:10000, Rhea:RHEA-COMP:10001, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC ChEBI:CHEBI:128753, ChEBI:CHEBI:128769; EC=1.17.7.4;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00191};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=dimethylallyl diphosphate + H2O + 2 oxidized [2Fe-2S]-
CC [ferredoxin] = (2E)-4-hydroxy-3-methylbut-2-enyl diphosphate + 2 H(+)
CC + 2 reduced [2Fe-2S]-[ferredoxin]; Xref=Rhea:RHEA:24825, Rhea:RHEA-
CC COMP:10000, Rhea:RHEA-COMP:10001, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC ChEBI:CHEBI:57623, ChEBI:CHEBI:128753; EC=1.17.7.4;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00191};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00191};
CC Note=Binds 1 [4Fe-4S] cluster per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_00191};
CC -!- PATHWAY: Isoprenoid biosynthesis; dimethylallyl diphosphate
CC biosynthesis; dimethylallyl diphosphate from (2E)-4-hydroxy-3-
CC methylbutenyl diphosphate: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00191}.
CC -!- PATHWAY: Isoprenoid biosynthesis; isopentenyl diphosphate biosynthesis
CC via DXP pathway; isopentenyl diphosphate from 1-deoxy-D-xylulose 5-
CC phosphate: step 6/6. {ECO:0000255|HAMAP-Rule:MF_00191}.
CC -!- SIMILARITY: Belongs to the IspH family. {ECO:0000255|HAMAP-
CC Rule:MF_00191}.
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DR EMBL; AP008226; BAD69838.1; -; Genomic_DNA.
DR RefSeq; WP_011227642.1; NC_006461.1.
DR RefSeq; YP_143281.1; NC_006461.1.
DR AlphaFoldDB; Q5SMC8; -.
DR SMR; Q5SMC8; -.
DR STRING; 300852.55771397; -.
DR EnsemblBacteria; BAD69838; BAD69838; BAD69838.
DR GeneID; 3169386; -.
DR KEGG; ttj:TTHA0015; -.
DR PATRIC; fig|300852.9.peg.17; -.
DR eggNOG; COG0761; Bacteria.
DR HOGENOM; CLU_027486_1_0_0; -.
DR OMA; HNKYVVD; -.
DR PhylomeDB; Q5SMC8; -.
DR UniPathway; UPA00056; UER00097.
DR UniPathway; UPA00059; UER00105.
DR Proteomes; UP000000532; Chromosome.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0051745; F:4-hydroxy-3-methylbut-2-en-1-yl diphosphate reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0050992; P:dimethylallyl diphosphate biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0019288; P:isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway; IEA:UniProtKB-UniRule.
DR GO; GO:0016114; P:terpenoid biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd13944; lytB_ispH; 1.
DR HAMAP; MF_00191; IspH; 1.
DR InterPro; IPR003451; LytB/IspH.
DR PANTHER; PTHR30426; PTHR30426; 1.
DR Pfam; PF02401; LYTB; 1.
DR TIGRFAMs; TIGR00216; ispH_lytB; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Iron; Iron-sulfur; Isoprene biosynthesis; Metal-binding;
KW Oxidoreductase; Reference proteome.
FT CHAIN 1..340
FT /note="4-hydroxy-3-methylbut-2-enyl diphosphate reductase"
FT /id="PRO_0000128883"
FT ACT_SITE 143
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 19
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 50
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 90
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 112
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 141
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 190
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 220
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 248..250
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 292
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
SQ SEQUENCE 340 AA; 37794 MW; 4F8355F01BE3FA44 CRC64;
MGGMSGLRRV YLARPRGFCA GVVMAIEAVE RWAEALKEKG ELVVYHEIVH NRVVVERLQA
KGVHFVEDLA EVERLRRERR LADTVVFSAH GHPPAVRRQA AEMGLTVLDA TCPLVTKVHT
EAKRYAKEGY WILLIGDSAD HQEIKGTYGE APERTILVAV HTHVGKDPRL ADPRTVEVPD
PERVVVLTQT TLSVDDTLAT IAILKKRFPK LVVPSRKDLC YATQNRQEAV KRIAPKVEAF
LVLTSPHSSN GMRLLELAQS LVGRAYRLER PEELRPEWLE GVESLGITSA ASTPEDLVQG
VVDRLKAQNP GLEVVEEGAW ETIAFREPKP LSPEEVLKGA
