ID   RPE_BUCAI               Reviewed;         228 AA.
AC   P57603;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 1.
DT   03-AUG-2022, entry version 92.
DE   RecName: Full=Ribulose-phosphate 3-epimerase {ECO:0000255|HAMAP-Rule:MF_02227};
DE            EC=5.1.3.1 {ECO:0000255|HAMAP-Rule:MF_02227};
GN   Name=rpe {ECO:0000255|HAMAP-Rule:MF_02227}; OrderedLocusNames=BU537;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: Catalyzes the reversible epimerization of D-ribulose 5-
CC       phosphate to D-xylulose 5-phosphate. {ECO:0000255|HAMAP-Rule:MF_02227}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-ribulose 5-phosphate = D-xylulose 5-phosphate;
CC         Xref=Rhea:RHEA:13677, ChEBI:CHEBI:57737, ChEBI:CHEBI:58121;
CC         EC=5.1.3.1; Evidence={ECO:0000255|HAMAP-Rule:MF_02227};
CC   -!- COFACTOR:
CC       Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02227};
CC       Note=Binds 1 divalent metal cation per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_02227};
CC   -!- PATHWAY: Carbohydrate degradation. {ECO:0000255|HAMAP-Rule:MF_02227}.
CC   -!- SIMILARITY: Belongs to the ribulose-phosphate 3-epimerase family.
CC       {ECO:0000255|HAMAP-Rule:MF_02227}.
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DR   EMBL; BA000003; BAB13230.1; -; Genomic_DNA.
DR   RefSeq; NP_240344.1; NC_002528.1.
DR   RefSeq; WP_009874488.1; NC_002528.1.
DR   AlphaFoldDB; P57603; -.
DR   SMR; P57603; -.
DR   STRING; 107806.10039196; -.
DR   EnsemblBacteria; BAB13230; BAB13230; BAB13230.
DR   KEGG; buc:BU537; -.
DR   PATRIC; fig|107806.10.peg.542; -.
DR   eggNOG; COG0036; Bacteria.
DR   HOGENOM; CLU_054856_1_0_6; -.
DR   OMA; WLQVDGG; -.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0004750; F:D-ribulose-phosphate 3-epimerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019323; P:pentose catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006098; P:pentose-phosphate shunt; IEA:InterPro.
DR   CDD; cd00429; RPE; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_02227; RPE; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR026019; Ribul_P_3_epim.
DR   InterPro; IPR000056; Ribul_P_3_epim-like.
DR   InterPro; IPR011060; RibuloseP-bd_barrel.
DR   PANTHER; PTHR11749; PTHR11749; 1.
DR   Pfam; PF00834; Ribul_P_3_epim; 1.
DR   PIRSF; PIRSF001461; RPE; 1.
DR   SUPFAM; SSF51366; SSF51366; 1.
DR   TIGRFAMs; TIGR01163; rpe; 1.
DR   PROSITE; PS01085; RIBUL_P_3_EPIMER_1; 1.
DR   PROSITE; PS01086; RIBUL_P_3_EPIMER_2; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Isomerase; Metal-binding; Reference proteome.
FT   CHAIN           1..228
FT                   /note="Ribulose-phosphate 3-epimerase"
FT                   /id="PRO_0000171562"
FT   ACT_SITE        36
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   ACT_SITE        177
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         9
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         34
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         36
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         68
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         68
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         177..179
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         177
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
FT   BINDING         199..200
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02227"
SQ   SEQUENCE   228 AA;  25410 MW;  797346400A81AC51 CRC64;
     MNKFFLAPSI LSADFARLGE DIKKVIDAGS DLIHFDVMDN HYVPNLSMGP MILESLRNYN
     ITAPIDVHLM VKPVDNLIPQ FAKAGATFIT FHPEATLHIE RTLNLIKENG CKAGLAFNPA
     TPLNFLDYIL EKLDLILLMS VNPGFGNQSF LPSTFNKLRE VRKIIDANFS DILLEVDGGV
     KLDNIADIAC AGANVFVMGS GLFKYSNYKL VIEKIRKKLE YAHSRSIH