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ISPH_PROMM
ID   ISPH_PROMM              Reviewed;         398 AA.
AC   Q7V4T7;
DT   19-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   03-AUG-2022, entry version 100.
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}; Synonyms=lytB;
GN   OrderedLocusNames=PMT_1854;
OS   Prochlorococcus marinus (strain MIT 9313).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74547;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9313;
RX   PubMed=12917642; DOI=10.1038/nature01947;
RA   Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA   Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA   Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA   Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA   Chisholm S.W.;
RT   "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT   differentiation.";
RL   Nature 424:1042-1047(2003).
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; BX548175; CAE22029.1; -; Genomic_DNA.
DR   RefSeq; WP_011131221.1; NC_005071.1.
DR   AlphaFoldDB; Q7V4T7; -.
DR   SMR; Q7V4T7; -.
DR   STRING; 74547.PMT_1854; -.
DR   DNASU; 1728896; -.
DR   EnsemblBacteria; CAE22029; CAE22029; PMT_1854.
DR   KEGG; pmt:PMT_1854; -.
DR   eggNOG; COG0761; Bacteria.
DR   HOGENOM; CLU_027486_4_0_3; -.
DR   OMA; HNKYVVD; -.
DR   OrthoDB; 1235756at2; -.
DR   UniPathway; UPA00056; UER00097.
DR   UniPathway; UPA00059; UER00105.
DR   Proteomes; UP000001423; 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   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..398
FT                   /note="4-hydroxy-3-methylbut-2-enyl diphosphate reductase"
FT                   /id="PRO_0000128855"
FT   ACT_SITE        187
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         66
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         96
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         157
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         185
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         250
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         288
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         317..319
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT   BINDING         379
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
SQ   SEQUENCE   398 AA;  44757 MW;  217DEC91F27D63AB CRC64;
     MDTQAFKRSL HHSERYNRRG FGRANEVASN LEKAYQSSLI GSIRDNGYVL QHGRLQVKLA
     EAFGFCWGVE RAVAMAYETR RHYPSERIWI TNEIIHNPSV NEHLREMDVL FIHAEGGVKD
     FSCVNDGDVV ILPAFGATVQ EMELLHERGC HIIDTTCPWV SKVWHTVEKH KKQEFTSIIH
     GKVKHEETLA TSSFAGTYLV VLDLDEAQLV ADYILGQGDR AAFMKRFAKA CSANFDPDQD
     LQRLGVANQT TMLKSETEEI GRLFERTMLR KYGPIELNKH FLSFNTICDA TEERQQAMFS
     LVDEPLDLLV VIGGFNSSNT THLQEIAISR GIRSFHIDTP ERIGDNNSIQ HKPLGEDLFI
     ESNFLPAGSV SVGITSGAST PDRVVEHVIQ KLIDLTSG
 
 
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