ID   NNRE_ELUMP              Reviewed;         221 AA.
AC   B2KES3;
DT   21-MAR-2012, integrated into UniProtKB/Swiss-Prot.
DT   10-JUN-2008, sequence version 1.
DT   03-AUG-2022, entry version 71.
DE   RecName: Full=NAD(P)H-hydrate epimerase {ECO:0000255|HAMAP-Rule:MF_01966};
DE            EC=5.1.99.6 {ECO:0000255|HAMAP-Rule:MF_01966};
DE   AltName: Full=NAD(P)HX epimerase {ECO:0000255|HAMAP-Rule:MF_01966};
GN   Name=nnrE {ECO:0000255|HAMAP-Rule:MF_01966}; OrderedLocusNames=Emin_1471;
OS   Elusimicrobium minutum (strain Pei191).
OC   Bacteria; Elusimicrobia; Elusimicrobia; Elusimicrobiales;
OC   Elusimicrobiaceae; Elusimicrobium.
OX   NCBI_TaxID=445932;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Pei191;
RX   PubMed=19270133; DOI=10.1128/aem.02698-08;
RA   Herlemann D.P.R., Geissinger O., Ikeda-Ohtsubo W., Kunin V., Sun H.,
RA   Lapidus A., Hugenholtz P., Brune A.;
RT   "Genomic analysis of 'Elusimicrobium minutum,' the first cultivated
RT   representative of the phylum 'Elusimicrobia' (formerly termite group 1).";
RL   Appl. Environ. Microbiol. 75:2841-2849(2009).
CC   -!- FUNCTION: Catalyzes the epimerization of the S- and R-forms of
CC       NAD(P)HX, a damaged form of NAD(P)H that is a result of enzymatic or
CC       heat-dependent hydration. This is a prerequisite for the S-specific
CC       NAD(P)H-hydrate dehydratase to allow the repair of both epimers of
CC       NAD(P)HX. {ECO:0000255|HAMAP-Rule:MF_01966}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-NADHX = (6S)-NADHX; Xref=Rhea:RHEA:32215,
CC         ChEBI:CHEBI:64074, ChEBI:CHEBI:64075; EC=5.1.99.6;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01966};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-NADPHX = (6S)-NADPHX; Xref=Rhea:RHEA:32227,
CC         ChEBI:CHEBI:64076, ChEBI:CHEBI:64077; EC=5.1.99.6;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01966};
CC   -!- COFACTOR:
CC       Name=K(+); Xref=ChEBI:CHEBI:29103;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01966};
CC       Note=Binds 1 potassium ion per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01966};
CC   -!- SIMILARITY: Belongs to the NnrE/AIBP family. {ECO:0000255|HAMAP-
CC       Rule:MF_01966}.
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DR   EMBL; CP001055; ACC99019.1; -; Genomic_DNA.
DR   RefSeq; WP_012415634.1; NC_010644.1.
DR   AlphaFoldDB; B2KES3; -.
DR   SMR; B2KES3; -.
DR   STRING; 445932.Emin_1471; -.
DR   EnsemblBacteria; ACC99019; ACC99019; Emin_1471.
DR   KEGG; emi:Emin_1471; -.
DR   HOGENOM; CLU_024853_0_1_0; -.
DR   OMA; SMFRGRY; -.
DR   OrthoDB; 1748633at2; -.
DR   Proteomes; UP000001029; Chromosome.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0052856; F:NADHX epimerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0052857; F:NADPHX epimerase activity; IEA:UniProtKB-EC.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.10260; -; 1.
DR   HAMAP; MF_01966; NADHX_epimerase; 1.
DR   InterPro; IPR001763; Rhodanese-like_dom.
DR   InterPro; IPR004443; YjeF_N_dom.
DR   InterPro; IPR036652; YjeF_N_dom_sf.
DR   Pfam; PF03853; YjeF_N; 1.
DR   SUPFAM; SSF64153; SSF64153; 1.
DR   TIGRFAMs; TIGR00197; yjeF_nterm; 1.
DR   PROSITE; PS51385; YJEF_N; 1.
PE   3: Inferred from homology;
KW   Isomerase; Metal-binding; NAD; NADP; Nucleotide-binding; Potassium;
KW   Reference proteome.
FT   CHAIN           1..221
FT                   /note="NAD(P)H-hydrate epimerase"
FT                   /id="PRO_0000416352"
FT   DOMAIN          9..219
FT                   /note="YjeF N-terminal"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         60..64
FT                   /ligand="(6S)-NADPHX"
FT                   /ligand_id="ChEBI:CHEBI:64076"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         61
FT                   /ligand="K(+)"
FT                   /ligand_id="ChEBI:CHEBI:29103"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         131
FT                   /ligand="K(+)"
FT                   /ligand_id="ChEBI:CHEBI:29103"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         135..141
FT                   /ligand="(6S)-NADPHX"
FT                   /ligand_id="ChEBI:CHEBI:64076"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         146
FT                   /ligand="(6S)-NADPHX"
FT                   /ligand_id="ChEBI:CHEBI:64076"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         164
FT                   /ligand="(6S)-NADPHX"
FT                   /ligand_id="ChEBI:CHEBI:64076"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
FT   BINDING         167
FT                   /ligand="K(+)"
FT                   /ligand_id="ChEBI:CHEBI:29103"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01966"
SQ   SEQUENCE   221 AA;  24171 MW;  208CE13853F3D584 CRC64;
     MKTVTSQKMR ELETAAVKEF GIDEDVLMEH AGRSAAEEIL NCFLSENKEK KVIIVCGHGG
     NGGDGLVCGR YLMERGVDVY CYIIPPFQGS YKGLVLKNLK RAFFSHLSVK EIYQNLSDLK
     NSVADAYIVI DALLGIGFKG EVKKNYKETI EVLNSSPSIK IAFDIPSGLN ADSGQNEGAV
     FKADYTYAMG FAKQGCLKAK DICGEIKVLN IGLPKELLSK V