ID   PANE_STRP6              Reviewed;         307 AA.
AC   Q5XCQ0;
DT   30-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-NOV-2004, sequence version 1.
DT   03-AUG-2022, entry version 104.
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=M6_Spy0678;
OS   Streptococcus pyogenes serotype M6 (strain ATCC BAA-946 / MGAS10394).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=286636;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-946 / MGAS10394;
RX   PubMed=15272401; DOI=10.1086/422697;
RA   Banks D.J., Porcella S.F., Barbian K.D., Beres S.B., Philips L.E.,
RA   Voyich J.M., DeLeo F.R., Martin J.M., Somerville G.A., Musser J.M.;
RT   "Progress toward characterization of the group A Streptococcus metagenome:
RT   complete genome sequence of a macrolide-resistant serotype M6 strain.";
RL   J. Infect. Dis. 190:727-738(2004).
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; CP000003; AAT86813.1; -; Genomic_DNA.
DR   RefSeq; WP_011184397.1; NC_006086.1.
DR   AlphaFoldDB; Q5XCQ0; -.
DR   SMR; Q5XCQ0; -.
DR   EnsemblBacteria; AAT86813; AAT86813; M6_Spy0678.
DR   KEGG; spa:M6_Spy0678; -.
DR   HOGENOM; CLU_031468_0_0_9; -.
DR   OMA; NYSSMYQ; -.
DR   UniPathway; UPA00028; UER00004.
DR   Proteomes; UP000001167; Chromosome.
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_0000157320"
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;  33869 MW;  AC4DCD3CFCA1D78F 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
     YVMDTSVRAA HHYPSMHQDL VQNHRLTEID FINGAVNTKG EKLGINTPYC RMITELVHAK
     EAVLNIQ