NNR_VIBCH
ID NNR_VIBCH Reviewed; 494 AA.
AC Q9KMX5;
DT 21-MAR-2012, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 93.
DE RecName: Full=Bifunctional NAD(P)H-hydrate repair enzyme Nnr;
DE AltName: Full=Nicotinamide nucleotide repair protein;
DE Includes:
DE RecName: Full=ADP-dependent (S)-NAD(P)H-hydrate dehydratase;
DE EC=4.2.1.136;
DE AltName: Full=ADP-dependent NAD(P)HX dehydratase;
DE Includes:
DE RecName: Full=NAD(P)H-hydrate epimerase;
DE EC=5.1.99.6;
DE AltName: Full=NAD(P)HX epimerase;
GN Name=nnr; OrderedLocusNames=VC_A0191;
OS Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Vibrio.
OX NCBI_TaxID=243277;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 39315 / El Tor Inaba N16961;
RX PubMed=10952301; DOI=10.1038/35020000;
RA Heidelberg J.F., Eisen J.A., Nelson W.C., Clayton R.A., Gwinn M.L.,
RA Dodson R.J., Haft D.H., Hickey E.K., Peterson J.D., Umayam L.A., Gill S.R.,
RA Nelson K.E., Read T.D., Tettelin H., Richardson D.L., Ermolaeva M.D.,
RA Vamathevan J.J., Bass S., Qin H., Dragoi I., Sellers P., McDonald L.A.,
RA Utterback T.R., Fleischmann R.D., Nierman W.C., White O., Salzberg S.L.,
RA Smith H.O., Colwell R.R., Mekalanos J.J., Venter J.C., Fraser C.M.;
RT "DNA sequence of both chromosomes of the cholera pathogen Vibrio
RT cholerae.";
RL Nature 406:477-483(2000).
CC -!- FUNCTION: Bifunctional enzyme that catalyzes the epimerization of the
CC S- and R-forms of NAD(P)HX and the dehydration of the S-form of
CC NAD(P)HX at the expense of ADP, which is converted to AMP. This allows
CC the repair of both epimers of NAD(P)HX, a damaged form of NAD(P)H that
CC is a result of enzymatic or heat-dependent hydration (By similarity).
CC {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6S)-NADHX + ADP = AMP + H(+) + NADH + phosphate;
CC Xref=Rhea:RHEA:32223, ChEBI:CHEBI:15378, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:57945, ChEBI:CHEBI:64074, ChEBI:CHEBI:456215,
CC ChEBI:CHEBI:456216; EC=4.2.1.136;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6S)-NADPHX + ADP = AMP + H(+) + NADPH + phosphate;
CC Xref=Rhea:RHEA:32235, ChEBI:CHEBI:15378, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:64076, ChEBI:CHEBI:456215,
CC ChEBI:CHEBI:456216; EC=4.2.1.136;
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 -!- 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 -!- COFACTOR:
CC Name=K(+); Xref=ChEBI:CHEBI:29103; Evidence={ECO:0000250};
CC Note=Binds 1 potassium ion per subunit. {ECO:0000250};
CC -!- SIMILARITY: In the N-terminal section; belongs to the NnrE/AIBP family.
CC {ECO:0000305}.
CC -!- SIMILARITY: In the C-terminal section; belongs to the NnrD/CARKD
CC family. {ECO:0000305}.
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DR EMBL; AE003853; AAF96104.1; -; Genomic_DNA.
DR PIR; H82489; H82489.
DR RefSeq; NP_232591.1; NC_002506.1.
DR AlphaFoldDB; Q9KMX5; -.
DR SMR; Q9KMX5; -.
DR STRING; 243277.VC_A0191; -.
DR DNASU; 2611829; -.
DR EnsemblBacteria; AAF96104; AAF96104; VC_A0191.
DR KEGG; vch:VC_A0191; -.
DR PATRIC; fig|243277.26.peg.2829; -.
DR eggNOG; COG0062; Bacteria.
DR eggNOG; COG0063; Bacteria.
DR HOGENOM; CLU_024853_4_3_6; -.
DR OMA; HNGGDAL; -.
DR BioCyc; VCHO:VCA0191-MON; -.
DR Proteomes; UP000000584; Chromosome 2.
DR GO; GO:0052855; F:ADP-dependent NAD(P)H-hydrate dehydratase activity; IBA:GO_Central.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0052856; F:NADHX epimerase activity; IBA:GO_Central.
DR GO; GO:0052857; F:NADPHX epimerase activity; IBA:GO_Central.
DR GO; GO:0110051; P:metabolite repair; IBA:GO_Central.
DR GO; GO:0046496; P:nicotinamide nucleotide metabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd01171; YXKO-related; 1.
DR Gene3D; 3.40.1190.20; -; 1.
DR Gene3D; 3.40.50.10260; -; 1.
DR HAMAP; MF_01965; NADHX_dehydratase; 1.
DR HAMAP; MF_01966; NADHX_epimerase; 1.
DR InterPro; IPR017953; Carbohydrate_kinase_pred_CS.
DR InterPro; IPR000631; CARKD.
DR InterPro; IPR030677; Nnr.
DR InterPro; IPR029056; Ribokinase-like.
DR InterPro; IPR004443; YjeF_N_dom.
DR InterPro; IPR036652; YjeF_N_dom_sf.
DR Pfam; PF01256; Carb_kinase; 1.
DR Pfam; PF03853; YjeF_N; 1.
DR PIRSF; PIRSF017184; Nnr; 1.
DR SUPFAM; SSF53613; SSF53613; 1.
DR SUPFAM; SSF64153; SSF64153; 1.
DR TIGRFAMs; TIGR00196; yjeF_cterm; 1.
DR TIGRFAMs; TIGR00197; yjeF_nterm; 1.
DR PROSITE; PS01050; YJEF_C_2; 1.
DR PROSITE; PS51383; YJEF_C_3; 1.
DR PROSITE; PS51385; YJEF_N; 1.
PE 3: Inferred from homology;
KW ATP-binding; Isomerase; Lyase; Metal-binding; Multifunctional enzyme; NAD;
KW NADP; Nucleotide-binding; Potassium; Reference proteome.
FT CHAIN 1..494
FT /note="Bifunctional NAD(P)H-hydrate repair enzyme Nnr"
FT /id="PRO_0000416424"
FT DOMAIN 17..219
FT /note="YjeF N-terminal"
FT DOMAIN 229..494
FT /note="YjeF C-terminal"
FT REGION 1..221
FT /note="NAD(P)H-hydrate epimerase"
FT /evidence="ECO:0000250"
FT REGION 65..69
FT /note="NADPHX 1; for epimerase activity"
FT /evidence="ECO:0000250"
FT REGION 133..139
FT /note="NADPHX 1; for epimerase activity"
FT /evidence="ECO:0000250"
FT REGION 229..494
FT /note="ADP-dependent (S)-NAD(P)H-hydrate dehydratase"
FT /evidence="ECO:0000250"
FT REGION 371..377
FT /note="NADPHX 2; for dehydratase activity"
FT /evidence="ECO:0000250"
FT BINDING 66
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000250"
FT BINDING 129
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000250"
FT BINDING 162
FT /ligand="(6S)-NADPHX"
FT /ligand_id="ChEBI:CHEBI:64076"
FT /ligand_label="1"
FT /ligand_note="for epimerase activity"
FT /evidence="ECO:0000250"
FT BINDING 165
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000250"
FT BINDING 325
FT /ligand="(6S)-NADPHX"
FT /ligand_id="ChEBI:CHEBI:64076"
FT /ligand_label="2"
FT /ligand_note="for dehydratase activity"
FT /evidence="ECO:0000250"
FT BINDING 408..412
FT /ligand="ADP"
FT /ligand_id="ChEBI:CHEBI:456216"
FT /evidence="ECO:0000250"
FT BINDING 427..436
FT /ligand="ADP"
FT /ligand_id="ChEBI:CHEBI:456216"
FT /evidence="ECO:0000250"
FT BINDING 437
FT /ligand="(6S)-NADPHX"
FT /ligand_id="ChEBI:CHEBI:64076"
FT /ligand_label="2"
FT /ligand_note="for dehydratase activity"
FT /evidence="ECO:0000250"
SQ SEQUENCE 494 AA; 52771 MW; 5C7C307F265A183F CRC64;
MDTIMPLPTH FYTTQQLKQG EQDAASERGL ELFHLMERAG QAVFTIAFAQ YPTSHHWLIC
CGGGNNGGDG YIVAVLARHM GIDVTVWQLG DPEKLPADAH RAYQQWKELG GAVYAPQSEV
PESTDVIIDA LFGIGLKEVL RPQVVPLVEL LNQSGKPIVA VDVPSGLCAD TGQVMGTCIK
AQHTVSLIGL KQGLVTGQAR CYVGTLHYAG LGVEEVFAQH NTPSLVSIDG KLRHSLLPPR
QACTHKGQNG KALIVGGNEG MGGALILCAS ACARSGAGLS AAMTHPDNVT AMLTITPEVM
STSWNKQHLF EERIEWCDAL ALGPGLGRDA QAQQIMQRLS SLKVPKVWDA DALYFLAHNP
SYDAQRIITP HPVEAARLLG CEVEEVEQDR FAAIRQLQQR YGGVVVLKGA GTLVDDGKEI
AVCLQGNPGM ASGGMGDVLT GIIVALLAQK IPLADAAKLG VWLHSSAADL NTKSHGQRGL
LASDLLPHLR ELLN
