ID   FOLM_SHIF8              Reviewed;         240 AA.
AC   Q0T4H1;
DT   10-JUN-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Dihydromonapterin reductase;
DE            Short=H(2)-MPt reductase;
DE            EC=1.5.1.50 {ECO:0000250|UniProtKB:P0AFS3};
DE   AltName: Full=Dihydrofolate reductase;
DE            Short=DHFR;
DE            EC=1.5.1.3 {ECO:0000250|UniProtKB:P0AFS3};
GN   Name=folM; OrderedLocusNames=SFV_1621;
OS   Shigella flexneri serotype 5b (strain 8401).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=373384;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=8401;
RX   PubMed=16822325; DOI=10.1186/1471-2164-7-173;
RA   Nie H., Yang F., Zhang X., Yang J., Chen L., Wang J., Xiong Z., Peng J.,
RA   Sun L., Dong J., Xue Y., Xu X., Chen S., Yao Z., Shen Y., Jin Q.;
RT   "Complete genome sequence of Shigella flexneri 5b and comparison with
RT   Shigella flexneri 2a.";
RL   BMC Genomics 7:173-173(2006).
CC   -!- FUNCTION: Catalyzes the reduction of dihydromonapterin to
CC       tetrahydromonapterin. Also has lower activity with dihydrofolate.
CC       {ECO:0000250|UniProtKB:P0AFS3}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6S)-5,6,7,8-tetrahydrofolate + NADP(+) = 7,8-dihydrofolate +
CC         H(+) + NADPH; Xref=Rhea:RHEA:15009, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:57451, ChEBI:CHEBI:57453, ChEBI:CHEBI:57783,
CC         ChEBI:CHEBI:58349; EC=1.5.1.3;
CC         Evidence={ECO:0000250|UniProtKB:P0AFS3};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=7,8-dihydromonapterin + H(+) + NADPH = 5,6,7,8-
CC         tetrahydromonapterin + NADP(+); Xref=Rhea:RHEA:34847,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:71175, ChEBI:CHEBI:71177; EC=1.5.1.50;
CC         Evidence={ECO:0000250|UniProtKB:P0AFS3};
CC   -!- SIMILARITY: Belongs to the short-chain dehydrogenases/reductases (SDR)
CC       family. FolM subfamily. {ECO:0000305}.
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DR   EMBL; CP000266; ABF03794.1; -; Genomic_DNA.
DR   RefSeq; WP_000520806.1; NC_008258.1.
DR   AlphaFoldDB; Q0T4H1; -.
DR   SMR; Q0T4H1; -.
DR   EnsemblBacteria; ABF03794; ABF03794; SFV_1621.
DR   GeneID; 58389277; -.
DR   KEGG; sfv:SFV_1621; -.
DR   HOGENOM; CLU_010194_1_3_6; -.
DR   OMA; QIHVHAP; -.
DR   BioCyc; SFLE373384:SFV_RS09075-MON; -.
DR   Proteomes; UP000000659; Chromosome.
DR   GO; GO:0004146; F:dihydrofolate reductase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-KW.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR020904; Sc_DH/Rdtase_CS.
DR   InterPro; IPR002347; SDR_fam.
DR   PRINTS; PR00081; GDHRDH.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   PROSITE; PS00061; ADH_SHORT; 1.
PE   3: Inferred from homology;
KW   NADP; One-carbon metabolism; Oxidoreductase.
FT   CHAIN           1..240
FT                   /note="Dihydromonapterin reductase"
FT                   /id="PRO_0000339402"
FT   ACT_SITE        152
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10001"
SQ   SEQUENCE   240 AA;  26330 MW;  1A227307B826086A CRC64;
     MGKTQPLPIL ITGGGRRIGL ALAWHFINQK QPVIVSYRTH YPAIDGLINA GAQCIQADFS
     TNDGVMAFAD EVLKTTHGLR AILHNASAWI AEKPGAPLAD VLACMMQIHV NTPYLLNHAL
     ERLLRGHGHA ASDIIHFTDY VVERGSDKHV AYAASKAALD NMTRSFARKL APEVKVNSIA
     PSLILFNEHD DAEYRQQALN KSLMKTAPGE KEVIDLVDYL LTSCFVTGRS FPLDGGRHLR