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Database: UniProt
Entry: D7FDS4_HELP3
LinkDB: D7FDS4_HELP3
Original site: D7FDS4_HELP3 
ID   D7FDS4_HELP3            Unreviewed;       290 AA.
AC   D7FDS4;
DT   10-AUG-2010, integrated into UniProtKB/TrEMBL.
DT   10-AUG-2010, sequence version 1.
DT   24-JAN-2024, entry version 83.
DE   RecName: Full=Bifunctional protein FolD {ECO:0000256|HAMAP-Rule:MF_01576};
DE   Includes:
DE     RecName: Full=Methylenetetrahydrofolate dehydrogenase {ECO:0000256|HAMAP-Rule:MF_01576};
DE              EC=1.5.1.5 {ECO:0000256|HAMAP-Rule:MF_01576};
DE   Includes:
DE     RecName: Full=Methenyltetrahydrofolate cyclohydrolase {ECO:0000256|HAMAP-Rule:MF_01576};
DE              EC=3.5.4.9 {ECO:0000256|HAMAP-Rule:MF_01576};
GN   Name=folD {ECO:0000256|HAMAP-Rule:MF_01576,
GN   ECO:0000313|EMBL:CBI66330.1};
GN   OrderedLocusNames=HPB8_773 {ECO:0000313|EMBL:CBI66330.1};
OS   Helicobacter pylori (strain B8).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=693745 {ECO:0000313|EMBL:CBI66330.1, ECO:0000313|Proteomes:UP000007091};
RN   [1] {ECO:0000313|EMBL:CBI66330.1, ECO:0000313|Proteomes:UP000007091}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=B8 {ECO:0000313|EMBL:CBI66330.1,
RC   ECO:0000313|Proteomes:UP000007091};
RX   PubMed=20507619; DOI=10.1186/1471-2164-11-335;
RA   Farnbacher M., Jahns T., Willrodt D., Daniel R., Haas R., Goesmann A.,
RA   Kurtz S., Rieder G.;
RT   "Sequencing, annotation, and comparative genome analysis of the gerbil-
RT   adapted Helicobacter pylori strain B8.";
RL   BMC Genomics 11:335-335(2010).
CC   -!- FUNCTION: Catalyzes the oxidation of 5,10-methylenetetrahydrofolate to
CC       5,10-methenyltetrahydrofolate and then the hydrolysis of 5,10-
CC       methenyltetrahydrofolate to 10-formyltetrahydrofolate.
CC       {ECO:0000256|HAMAP-Rule:MF_01576}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-5,10-methenyltetrahydrofolate + H2O = (6R)-10-
CC         formyltetrahydrofolate + H(+); Xref=Rhea:RHEA:23700,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:57455,
CC         ChEBI:CHEBI:195366; EC=3.5.4.9; Evidence={ECO:0000256|HAMAP-
CC         Rule:MF_01576};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + NADP(+) = (6R)-
CC         5,10-methenyltetrahydrofolate + NADPH; Xref=Rhea:RHEA:22812,
CC         ChEBI:CHEBI:15636, ChEBI:CHEBI:57455, ChEBI:CHEBI:57783,
CC         ChEBI:CHEBI:58349; EC=1.5.1.5; Evidence={ECO:0000256|HAMAP-
CC         Rule:MF_01576};
CC   -!- PATHWAY: One-carbon metabolism; tetrahydrofolate interconversion.
CC       {ECO:0000256|ARBA:ARBA00004777, ECO:0000256|HAMAP-Rule:MF_01576}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01576}.
CC   -!- SIMILARITY: Belongs to the tetrahydrofolate
CC       dehydrogenase/cyclohydrolase family. {ECO:0000256|HAMAP-Rule:MF_01576}.
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DR   EMBL; FN598874; CBI66330.1; -; Genomic_DNA.
DR   AlphaFoldDB; D7FDS4; -.
DR   KEGG; hpl:HPB8_773; -.
DR   HOGENOM; CLU_034045_2_1_7; -.
DR   OMA; VCHILTK; -.
DR   UniPathway; UPA00193; -.
DR   Proteomes; UP000007091; Chromosome.
DR   GO; GO:0004477; F:methenyltetrahydrofolate cyclohydrolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004488; F:methylenetetrahydrofolate dehydrogenase (NADP+) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0009086; P:methionine biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0006164; P:purine nucleotide biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0035999; P:tetrahydrofolate interconversion; IEA:UniProtKB-UniPathway.
DR   CDD; cd01080; NAD_bind_m-THF_DH_Cyclohyd; 1.
DR   Gene3D; 3.40.50.10860; Leucine Dehydrogenase, chain A, domain 1; 1.
DR   Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR   HAMAP; MF_01576; THF_DHG_CYH; 1.
DR   InterPro; IPR046346; Aminoacid_DH-like_N_sf.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR000672; THF_DH/CycHdrlase.
DR   InterPro; IPR020630; THF_DH/CycHdrlase_cat_dom.
DR   InterPro; IPR020867; THF_DH/CycHdrlase_CS.
DR   InterPro; IPR020631; THF_DH/CycHdrlase_NAD-bd_dom.
DR   PANTHER; PTHR48099:SF5; C-1-TETRAHYDROFOLATE SYNTHASE, CYTOPLASMIC; 1.
DR   PANTHER; PTHR48099; C-1-TETRAHYDROFOLATE SYNTHASE, CYTOPLASMIC-RELATED; 1.
DR   Pfam; PF00763; THF_DHG_CYH; 1.
DR   Pfam; PF02882; THF_DHG_CYH_C; 1.
DR   PRINTS; PR00085; THFDHDRGNASE.
DR   SUPFAM; SSF53223; Aminoacid dehydrogenase-like, N-terminal domain; 1.
DR   SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR   PROSITE; PS00766; THF_DHG_CYH_1; 1.
DR   PROSITE; PS00767; THF_DHG_CYH_2; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01576};
KW   Histidine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01576};
KW   Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01576};
KW   Methionine biosynthesis {ECO:0000256|ARBA:ARBA00023167, ECO:0000256|HAMAP-
KW   Rule:MF_01576};
KW   Multifunctional enzyme {ECO:0000256|ARBA:ARBA00023268, ECO:0000256|HAMAP-
KW   Rule:MF_01576};
KW   NADP {ECO:0000256|ARBA:ARBA00022857, ECO:0000256|HAMAP-Rule:MF_01576};
KW   One-carbon metabolism {ECO:0000256|ARBA:ARBA00022563, ECO:0000256|HAMAP-
KW   Rule:MF_01576};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW   Rule:MF_01576};
KW   Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW   Rule:MF_01576}.
FT   DOMAIN          9..124
FT                   /note="Tetrahydrofolate dehydrogenase/cyclohydrolase
FT                   catalytic"
FT                   /evidence="ECO:0000259|Pfam:PF00763"
FT   DOMAIN          127..285
FT                   /note="Tetrahydrofolate dehydrogenase/cyclohydrolase
FT                   NAD(P)-binding"
FT                   /evidence="ECO:0000259|Pfam:PF02882"
FT   BINDING         169..171
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01576"
FT   BINDING         194
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01576"
FT   BINDING         235
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01576"
SQ   SEQUENCE   290 AA;  31774 MW;  90CEAE940CDDB324 CRC64;
     MPNRGVVLLD GQALAYDIEK DLKHKIQIIH TQTHKRPKLA VILVGKDPAS ITYVNMKIKA
     CERVGMDFDL KTLQENITEA ELLSLIKDYN TDQNISGVLV QLPLPRHIDT KMILEAIDPN
     KDVDGFHPLN IGKLCTQKES FLPATPMGVM RLLEHYHIEI KGKDVAIIGA SNIIGKPLSM
     LMLNAGASVS VCHILTKDIS FYTQNADIVC VGVGKPDLIK ASMLKKGAVV VDIGINHLND
     GRIVGDVDFN NAQKVAGFIT PVPKGVGPMT IVSLLENTLI AFEKQQRKGF
//
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