ID   PANE_STRP8              Reviewed;         307 AA.
AC   Q8P1F1;
DT   25-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=2-dehydropantoate 2-reductase {ECO:0000250|UniProtKB:P0A9J4};
DE            EC=1.1.1.169 {ECO:0000250|UniProtKB:P0A9J4};
DE   AltName: Full=Ketopantoate reductase {ECO:0000250|UniProtKB:P0A9J4};
DE            Short=KPR {ECO:0000250|UniProtKB:P0A9J4};
GN   Name=apbA; OrderedLocusNames=spyM18_0911;
OS   Streptococcus pyogenes serotype M18 (strain MGAS8232).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=186103;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MGAS8232;
RX   PubMed=11917108; DOI=10.1073/pnas.062526099;
RA   Smoot J.C., Barbian K.D., Van Gompel J.J., Smoot L.M., Chaussee M.S.,
RA   Sylva G.L., Sturdevant D.E., Ricklefs S.M., Porcella S.F., Parkins L.D.,
RA   Beres S.B., Campbell D.S., Smith T.M., Zhang Q., Kapur V., Daly J.A.,
RA   Veasy L.G., Musser J.M.;
RT   "Genome sequence and comparative microarray analysis of serotype M18 group
RT   A Streptococcus strains associated with acute rheumatic fever outbreaks.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:4668-4673(2002).
CC   -!- FUNCTION: Catalyzes the NADPH-dependent reduction of ketopantoate into
CC       pantoic acid. {ECO:0000250|UniProtKB:P0A9J4}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(R)-pantoate + NADP(+) = 2-dehydropantoate + H(+) + NADPH;
CC         Xref=Rhea:RHEA:16233, ChEBI:CHEBI:11561, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15980, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349;
CC         EC=1.1.1.169; Evidence={ECO:0000250|UniProtKB:P0A9J4};
CC   -!- PATHWAY: Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-
CC       pantoate from 3-methyl-2-oxobutanoate: step 2/2.
CC       {ECO:0000250|UniProtKB:P0A9J4}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:P0A9J4}.
CC   -!- SIMILARITY: Belongs to the ketopantoate reductase family.
CC       {ECO:0000305}.
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DR   EMBL; AE009949; AAL97561.1; -; Genomic_DNA.
DR   RefSeq; WP_002985045.1; NC_003485.1.
DR   AlphaFoldDB; Q8P1F1; -.
DR   SMR; Q8P1F1; -.
DR   GeneID; 57852462; -.
DR   KEGG; spm:spyM18_0911; -.
DR   HOGENOM; CLU_031468_0_0_9; -.
DR   OMA; NYSSMYQ; -.
DR   UniPathway; UPA00028; UER00004.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008677; F:2-dehydropantoate 2-reductase activity; IEA:UniProtKB-EC.
DR   GO; GO:0015940; P:pantothenate biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 1.10.1040.10; -; 1.
DR   InterPro; IPR008927; 6-PGluconate_DH-like_C_sf.
DR   InterPro; IPR013328; 6PGD_dom2.
DR   InterPro; IPR003710; ApbA.
DR   InterPro; IPR013752; KPA_reductase.
DR   InterPro; IPR013332; KPR_N.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   Pfam; PF02558; ApbA; 1.
DR   Pfam; PF08546; ApbA_C; 1.
DR   SUPFAM; SSF48179; SSF48179; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   TIGRFAMs; TIGR00745; apbA_panE; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; NADP; Oxidoreductase; Pantothenate biosynthesis.
FT   CHAIN           1..307
FT                   /note="2-dehydropantoate 2-reductase"
FT                   /id="PRO_0000157321"
FT   ACT_SITE        184
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         7..12
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         102
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         102
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         128
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         188
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         192
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         255
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
FT   BINDING         268
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250|UniProtKB:P0A9J4"
SQ   SEQUENCE   307 AA;  33841 MW;  AC4DCD25E5A1CE96 CRC64;
     MLVYIAGSGA MGCRFGYQIS KTNNDVILLD NWEDHINAIK ENGLVVTGDV EETVKLPIMK
     PTEATQEADL IILFTKAMQL PQMLQDIKGI IGKETKVLCL LNGLGHEDVI RQYIPEHNIL
     MGVTVWTAGL EGPGRAHLQG VGALNLQSMD PNNQDAGHQV ADLLNKANLN ATYDENVVPN
     IWRKACVNGT MNSTCALLDC TIGELFASED GLKMVKEIIH EFVIVGQAEG VELNEEEITQ
     YVMDTSVKAA HHYPSMHQDL VQNHRLTEID FINGAVNTKG EKLGINTPYC RMITELVHAK
     EAVLNIQ