ID G2LJM5_CHLTF Unreviewed; 401 AA.
AC G2LJM5;
DT 16-NOV-2011, integrated into UniProtKB/TrEMBL.
DT 16-NOV-2011, sequence version 1.
DT 27-MAR-2024, entry version 71.
DE RecName: Full=4-hydroxy-3-methylbut-2-enyl diphosphate reductase {ECO:0000256|HAMAP-Rule:MF_00191};
DE Short=HMBPP reductase {ECO:0000256|HAMAP-Rule:MF_00191};
DE EC=1.17.7.4 {ECO:0000256|HAMAP-Rule:MF_00191};
GN Name=ispH {ECO:0000256|HAMAP-Rule:MF_00191};
GN OrderedLocusNames=Cabther_B0034 {ECO:0000313|EMBL:AEP13042.1};
OS Chloracidobacterium thermophilum (strain B).
OC Bacteria; Acidobacteriota; Blastocatellia; Chloracidobacterium.
OX NCBI_TaxID=981222 {ECO:0000313|EMBL:AEP13042.1, ECO:0000313|Proteomes:UP000006791};
RN [1] {ECO:0000313|EMBL:AEP13042.1, ECO:0000313|Proteomes:UP000006791}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=B {ECO:0000313|EMBL:AEP13042.1,
RC ECO:0000313|Proteomes:UP000006791};
RX PubMed=21951563; DOI=10.1111/j.1462-2920.2011.02592.x;
RA Garcia Costas A.M., Liu Z., Tomsho L.P., Schuster S.C., Ward D.M.,
RA Bryant D.A.;
RT "Complete genome of Candidatus Chloracidobacterium thermophilum, a
RT chlorophyll-based photoheterotroph belonging to the phylum Acidobacteria.";
RL Environ. Microbiol. 14:177-190(2012).
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:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_00191};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00191};
CC Note=Binds 1 [4Fe-4S] cluster per subunit. {ECO:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_00191}.
CC -!- SIMILARITY: Belongs to the IspH family. {ECO:0000256|HAMAP-
CC Rule:MF_00191}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00191}.
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DR EMBL; CP002515; AEP13042.1; -; Genomic_DNA.
DR AlphaFoldDB; G2LJM5; -.
DR STRING; 981222.Cabther_B0034; -.
DR KEGG; ctm:Cabther_B0034; -.
DR HOGENOM; CLU_027486_4_0_0; -.
DR UniPathway; UPA00056; UER00097.
DR UniPathway; UPA00059; UER00105.
DR Proteomes; UP000006791; Chromosome 2.
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; PTHR31619; 4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE, CHLOROPLASTIC; 1.
DR PANTHER; PTHR31619:SF5; 4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE, CHLOROPLASTIC; 1.
DR Pfam; PF02401; LYTB; 1.
PE 3: Inferred from homology;
KW 4Fe-4S {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|HAMAP-Rule:MF_00191};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_00191};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_00191}; Isoprene biosynthesis {ECO:0000256|HAMAP-Rule:MF_00191};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00191};
KW Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00191,
KW ECO:0000313|EMBL:AEP13042.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000006791}.
FT ACT_SITE 184
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 69
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 99
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 154
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 182
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 252
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 290
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 319..321
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
FT BINDING 381
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00191"
SQ SEQUENCE 401 AA; 44750 MW; 6DA670738E8C67D1 CRC64;
MFLMAIANDA AAPAKRQNPS RSGFGLRAEV HDEIRNDFDS ALVQRIKASG GTHQAGRLTF
RLAQEFGFCY GVDHALDLAY ETHVRFPNRR VYLTGEIIHN PTVNEQLARM GYCFLRPGDE
VTADDIVLIP AFGAPTHELE RLKRIGCLLV DTTCGSVVHV WKRVEKYARE GFTAIIHGKY
DHEETEATRS RTTLYPNGKF LVVRDRVQAQ DVCDYILGRG SREAFLARYA AVATPGFDPD
RDLQRVGLAN QTTMLSSESL EIAEMIRRAI EQRYGPEEVK TRFRSFDTIC SATQERQDAI
LKLIEEPLDL VIVVGGYNSS NTEHLCEIAA ERLPTYHINA PECLVSAREI RHKPAFSKEE
TTSWDWLPEG PVTIGITAGA STPNKVVGDC IERIVALADV G
//
