ISPH2_RHOPA
ID ISPH2_RHOPA Reviewed; 320 AA.
AC Q6N1Y1;
DT 19-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 105.
DE RecName: Full=4-hydroxy-3-methylbut-2-enyl diphosphate reductase 2 {ECO:0000255|HAMAP-Rule:MF_00191};
DE Short=HMBPP reductase 2 {ECO:0000255|HAMAP-Rule:MF_00191};
DE EC=1.17.7.4 {ECO:0000255|HAMAP-Rule:MF_00191};
GN Name=ispH2 {ECO:0000255|HAMAP-Rule:MF_00191}; Synonyms=lytB2;
GN OrderedLocusNames=RPA4271;
OS Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Bradyrhizobiaceae; Rhodopseudomonas.
OX NCBI_TaxID=258594;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-98 / CGA009;
RX PubMed=14704707; DOI=10.1038/nbt923;
RA Larimer F.W., Chain P., Hauser L., Lamerdin J.E., Malfatti S., Do L.,
RA Land M.L., Pelletier D.A., Beatty J.T., Lang A.S., Tabita F.R.,
RA Gibson J.L., Hanson T.E., Bobst C., Torres y Torres J.L., Peres C.,
RA Harrison F.H., Gibson J., Harwood C.S.;
RT "Complete genome sequence of the metabolically versatile photosynthetic
RT bacterium Rhodopseudomonas palustris.";
RL Nat. Biotechnol. 22:55-61(2004).
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; BX572606; CAE29712.1; -; Genomic_DNA.
DR RefSeq; WP_011159806.1; NC_005296.1.
DR AlphaFoldDB; Q6N1Y1; -.
DR SMR; Q6N1Y1; -.
DR STRING; 258594.RPA4271; -.
DR PRIDE; Q6N1Y1; -.
DR EnsemblBacteria; CAE29712; CAE29712; RPA4271.
DR GeneID; 66895397; -.
DR KEGG; rpa:RPA4271; -.
DR eggNOG; COG0761; Bacteria.
DR HOGENOM; CLU_027486_1_0_5; -.
DR OMA; HNKYVVD; -.
DR PhylomeDB; Q6N1Y1; -.
DR BioCyc; RPAL258594:TX73_RS21780-MON; -.
DR UniPathway; UPA00056; UER00097.
DR UniPathway; UPA00059; UER00105.
DR Proteomes; UP000001426; 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..320
FT /note="4-hydroxy-3-methylbut-2-enyl diphosphate reductase
FT 2"
FT /id="PRO_0000128866"
FT ACT_SITE 133
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 18
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 47
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 81
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 103
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 131
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 172
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 202
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 230..232
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
FT BINDING 275
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00191"
SQ SEQUENCE 320 AA; 34614 MW; A60DC8C6E806E39B CRC64;
MLAKSPLKIV LCSPRGFCAG VVRAIDTVER ALALYGAPVY VRHEIVHNKY VVDSLRAKGA
IFVEELEEIP DTKAPVVFSA HGVPKSVPEH ALSRNFFSID ATCPLVTKVH REAAIHFKRG
REILLIGHSH HPEVVGTLGQ LPAGAVTLIE TAADAEAYQP KDPNNLAFVT QTTLSIDDTA
GIVTVLRERF PNISGPHKED ICYATTNRQA AVKKVAPVVD AMIVVGAPNS SNSQRLREVA
EREGCKVAVL VQRASDLDWS QFEGIKVLGL TAGASAPEVI VEEIMGAFAE RFDLSVETVS
AAEENEFFPV PRVLRPDAAE
