ID   DXR_BUCAT               Reviewed;         398 AA.
AC   B8D7D6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=1-deoxy-D-xylulose 5-phosphate reductoisomerase {ECO:0000255|HAMAP-Rule:MF_00183};
DE            Short=DXP reductoisomerase {ECO:0000255|HAMAP-Rule:MF_00183};
DE            EC=1.1.1.267 {ECO:0000255|HAMAP-Rule:MF_00183};
DE   AltName: Full=1-deoxyxylulose-5-phosphate reductoisomerase {ECO:0000255|HAMAP-Rule:MF_00183};
DE   AltName: Full=2-C-methyl-D-erythritol 4-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00183};
GN   Name=dxr {ECO:0000255|HAMAP-Rule:MF_00183}; OrderedLocusNames=BUAPTUC7_232;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain Tuc7).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=561501;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Tuc7;
RX   PubMed=19150844; DOI=10.1126/science.1167140;
RA   Moran N.A., McLaughlin H.J., Sorek R.;
RT   "The dynamics and time scale of ongoing genomic erosion in symbiotic
RT   bacteria.";
RL   Science 323:379-382(2009).
CC   -!- FUNCTION: Catalyzes the NADP-dependent rearrangement and reduction of
CC       1-deoxy-D-xylulose-5-phosphate (DXP) to 2-C-methyl-D-erythritol 4-
CC       phosphate (MEP). {ECO:0000255|HAMAP-Rule:MF_00183}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-C-methyl-D-erythritol 4-phosphate + NADP(+) = 1-deoxy-D-
CC         xylulose 5-phosphate + H(+) + NADPH; Xref=Rhea:RHEA:13717,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:57792,
CC         ChEBI:CHEBI:58262, ChEBI:CHEBI:58349; EC=1.1.1.267;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00183};
CC   -!- COFACTOR:
CC       Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00183};
CC   -!- PATHWAY: Isoprenoid biosynthesis; isopentenyl diphosphate biosynthesis
CC       via DXP pathway; isopentenyl diphosphate from 1-deoxy-D-xylulose 5-
CC       phosphate: step 1/6. {ECO:0000255|HAMAP-Rule:MF_00183}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00183}.
CC   -!- SIMILARITY: Belongs to the DXR family. {ECO:0000255|HAMAP-
CC       Rule:MF_00183}.
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DR   EMBL; CP001158; ACL30051.1; -; Genomic_DNA.
DR   RefSeq; WP_009874191.1; NC_011834.1.
DR   AlphaFoldDB; B8D7D6; -.
DR   SMR; B8D7D6; -.
DR   KEGG; bau:BUAPTUC7_232; -.
DR   HOGENOM; CLU_035714_0_1_6; -.
DR   OMA; PIDSEHF; -.
DR   UniPathway; UPA00056; UER00092.
DR   GO; GO:0030604; F:1-deoxy-D-xylulose-5-phosphate reductoisomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0070402; F:NADPH binding; IEA:InterPro.
DR   GO; GO:0019288; P:isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway; IEA:UniProtKB-UniPathway.
DR   GO; GO:0016114; P:terpenoid biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00183; DXP_reductoisom; 1.
DR   InterPro; IPR003821; DXP_reductoisomerase.
DR   InterPro; IPR013644; DXP_reductoisomerase_C.
DR   InterPro; IPR013512; DXP_reductoisomerase_N.
DR   InterPro; IPR026877; DXPR_C.
DR   InterPro; IPR036169; DXPR_C_sf.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   PANTHER; PTHR30525; PTHR30525; 1.
DR   Pfam; PF08436; DXP_redisom_C; 1.
DR   Pfam; PF02670; DXP_reductoisom; 1.
DR   Pfam; PF13288; DXPR_C; 1.
DR   PIRSF; PIRSF006205; Dxp_reductismrs; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   SUPFAM; SSF69055; SSF69055; 1.
DR   TIGRFAMs; TIGR00243; Dxr; 1.
PE   3: Inferred from homology;
KW   Isoprene biosynthesis; Metal-binding; NADP; Oxidoreductase.
FT   CHAIN           1..398
FT                   /note="1-deoxy-D-xylulose 5-phosphate reductoisomerase"
FT                   /id="PRO_1000124081"
FT   BINDING         7..36
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         125
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         150
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         152
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         152
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         186
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         209
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         231
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
FT   BINDING         231
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00183"
SQ   SEQUENCE   398 AA;  44159 MW;  EBFBBA12053E5961 CRC64;
     MKKITILGST GSIGINALSI IQKNPDLFKV IALVANKNFS IMLRQCELFS PDWVAMRDEK
     SAHILRKKLK HSKINTQVLT GEKDICALAA LEETDHVISA IVGMAGLLPT LSAIHAGKTI
     LLANKESLIT SGYFFMKALS SSGAKIIPID SEHNAIFQVL PLEIQKNLGK TTLEKNSIKH
     LVLTGSGGPF YKFSSSDLSN VTPDQACSHP NWLMGKKISV DSATMMNKGL EYAEARWLFN
     ALESEIKILI HPESIIHSMV QYYDGSLLAQ LSAPDIRTSI SYAMSWPDRI CTEVDYLNFY
     KINNLTFFEP DFTQFPCLKL AIDAFSQGQA SMTVLNAANE IAVSSFLDSK ISFTKIYEIN
     MEILMSSCFS EPKCIQDILE IDRKVRILAK NKVSSLIF