ID FOLD_HAHCH Reviewed; 294 AA.
AC Q2SK39;
DT 12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT 24-JAN-2006, sequence version 1.
DT 27-MAR-2024, entry version 104.
DE RecName: Full=Bifunctional protein FolD {ECO:0000255|HAMAP-Rule:MF_01576};
DE Includes:
DE RecName: Full=Methylenetetrahydrofolate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01576};
DE EC=1.5.1.5 {ECO:0000255|HAMAP-Rule:MF_01576};
DE Includes:
DE RecName: Full=Methenyltetrahydrofolate cyclohydrolase {ECO:0000255|HAMAP-Rule:MF_01576};
DE EC=3.5.4.9 {ECO:0000255|HAMAP-Rule:MF_01576};
GN Name=folD {ECO:0000255|HAMAP-Rule:MF_01576}; OrderedLocusNames=HCH_02155;
OS Hahella chejuensis (strain KCTC 2396).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC Hahellaceae; Hahella.
OX NCBI_TaxID=349521;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KCTC 2396;
RX PubMed=16352867; DOI=10.1093/nar/gki1016;
RA Jeong H., Yim J.H., Lee C., Choi S.-H., Park Y.K., Yoon S.H., Hur C.-G.,
RA Kang H.-Y., Kim D., Lee H.H., Park K.H., Park S.-H., Park H.-S., Lee H.K.,
RA Oh T.K., Kim J.F.;
RT "Genomic blueprint of Hahella chejuensis, a marine microbe producing an
RT algicidal agent.";
RL Nucleic Acids Res. 33:7066-7073(2005).
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:0000255|HAMAP-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:0000255|HAMAP-
CC 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:0000255|HAMAP-
CC Rule:MF_01576};
CC -!- PATHWAY: One-carbon metabolism; tetrahydrofolate interconversion.
CC {ECO:0000255|HAMAP-Rule:MF_01576}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01576}.
CC -!- SIMILARITY: Belongs to the tetrahydrofolate
CC dehydrogenase/cyclohydrolase family. {ECO:0000255|HAMAP-Rule:MF_01576}.
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DR EMBL; CP000155; ABC28985.1; -; Genomic_DNA.
DR AlphaFoldDB; Q2SK39; -.
DR SMR; Q2SK39; -.
DR STRING; 349521.HCH_02155; -.
DR KEGG; hch:HCH_02155; -.
DR eggNOG; COG0190; Bacteria.
DR HOGENOM; CLU_034045_2_1_6; -.
DR OrthoDB; 9803580at2; -.
DR UniPathway; UPA00193; -.
DR Proteomes; UP000000238; 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; Histidine biosynthesis; Hydrolase;
KW Methionine biosynthesis; Multifunctional enzyme; NADP;
KW One-carbon metabolism; Oxidoreductase; Purine biosynthesis;
KW Reference proteome.
FT CHAIN 1..294
FT /note="Bifunctional protein FolD"
FT /id="PRO_0000268367"
FT BINDING 175..177
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01576"
FT BINDING 241
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01576"
SQ SEQUENCE 294 AA; 31675 MW; 1E65C7D2F425AD15 CRC64;
MTMTHAQNNH HARLIDGKQV AADVRANVAE GVKARIDSGL RPPGLAVVLV GEDPASQVYV
KNKTKACEEV GFLSQKYTLE ESTTEEELLK LIDTLNEDNA IDGILVQLPL PTHMDADNIL
ERIKPDKDVD GFHPYNLGRL AQRMPVLRPC TPKGIMTLLA RTGVELRGKD ALVVGASNIV
GRPMGLELLL AGCTVTITHR FTVNLPAKVS QADIVVVAVG RPGIVKGEWI KPGAIVIDVG
INRRDDGALV GDIEFNEAAE RASWITPVPG GVGPMTVATL MENTLYAANH LHKD
//
