ID ISPH_CHLTE Reviewed; 332 AA.
AC Q8KFN9;
DT 19-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2002, sequence version 1.
DT 27-MAR-2024, entry version 107.
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=CT0283;
OS Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
OS (Chlorobium tepidum).
OC Bacteria; Chlorobiota; Chlorobiia; Chlorobiales; Chlorobiaceae;
OC Chlorobaculum.
OX NCBI_TaxID=194439;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49652 / DSM 12025 / NBRC 103806 / TLS;
RX PubMed=12093901; DOI=10.1073/pnas.132181499;
RA Eisen J.A., Nelson K.E., Paulsen I.T., Heidelberg J.F., Wu M., Dodson R.J.,
RA DeBoy R.T., Gwinn M.L., Nelson W.C., Haft D.H., Hickey E.K., Peterson J.D.,
RA Durkin A.S., Kolonay J.F., Yang F., Holt I.E., Umayam L.A., Mason T.M.,
RA Brenner M., Shea T.P., Parksey D.S., Nierman W.C., Feldblyum T.V.,
RA Hansen C.L., Craven M.B., Radune D., Vamathevan J.J., Khouri H.M.,
RA White O., Gruber T.M., Ketchum K.A., Venter J.C., Tettelin H., Bryant D.A.,
RA Fraser C.M.;
RT "The complete genome sequence of Chlorobium tepidum TLS, a photosynthetic,
RT anaerobic, green-sulfur bacterium.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:9509-9514(2002).
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; AE006470; AAM71529.1; -; Genomic_DNA.
DR RefSeq; NP_661187.1; NC_002932.3.
DR RefSeq; WP_010931975.1; NC_002932.3.
DR AlphaFoldDB; Q8KFN9; -.
DR SMR; Q8KFN9; -.
DR STRING; 194439.CT0283; -.
DR EnsemblBacteria; AAM71529; AAM71529; CT0283.
DR KEGG; cte:CT0283; -.
DR PATRIC; fig|194439.7.peg.275; -.
DR eggNOG; COG0761; Bacteria.
DR HOGENOM; CLU_027486_0_1_10; -.
DR OrthoDB; 9777362at2; -.
DR UniPathway; UPA00056; UER00097.
DR UniPathway; UPA00059; UER00105.
DR Proteomes; UP000001007; 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 Gene3D; 3.40.50.11270; -; 1.
DR Gene3D; 3.40.1010.20; 4-hydroxy-3-methylbut-2-enyl diphosphate reductase, catalytic domain; 2.
DR HAMAP; MF_00191; IspH; 1.
DR InterPro; IPR003451; LytB/IspH.
DR NCBIfam; TIGR00216; ispH_lytB; 1.
DR PANTHER; PTHR30426; 4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE; 1.
DR PANTHER; PTHR30426:SF0; 4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE; 1.
DR Pfam; PF02401; LYTB; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Iron; Iron-sulfur; Isoprene biosynthesis; Metal-binding;
KW Oxidoreductase; Reference proteome.
FT CHAIN 1..332
FT /note="4-hydroxy-3-methylbut-2-enyl diphosphate reductase"
FT /id="PRO_0000128802"
FT ACT_SITE 127
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 13
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 41
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 75
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 97
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 125
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 168
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 229
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 257..259
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 306
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
SQ SEQUENCE 332 AA; 36573 MW; D8443D0A30A26977 CRC64;
MKINLDRTSS GFCIGVQGTI HVAEEKLAQS GELYCLGDVV HNEVEVKRLE ALGMETIDIP
AFEELRNAEV LIRAHGEPPS TYETARKNNL AITDTTCPVV AKLQRTAKML HQLGYQVVIY
GKKVHPEVIG INGQCDDEGV VIKHPDLSDP EEIAPLDLSR KTALISQTTM DVPGFYELKR
NLEKLFAEHG HRNPGTQSGE WMAVRDIDIT AEKTGALAMP KLVFKDTICR QVSSRNGKLR
DFALANDCIV FAAGRKSSNG QVLYSICKDA NPHSYFIEDV DEIRPEWFVG ENGKPVESVG
ICGATSTPMW LLEKVANYID KTFGDGSSNP NA
//
