ID   FOLD2_ARTAT             Reviewed;         297 AA.
AC   A1R451;
DT   02-OCT-2007, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   16-JUN-2009, entry version 19.
DE   RecName: Full=Bifunctional protein folD 2;
DE   Includes:
DE     RecName: Full=Methylenetetrahydrofolate dehydrogenase;
DE              EC=1.5.1.5;
DE   Includes:
DE     RecName: Full=Methenyltetrahydrofolate cyclohydrolase;
DE              EC=3.5.4.9;
GN   Name=folD2; OrderedLocusNames=AAur_1228;
OS   Arthrobacter aurescens (strain TC1).
OC   Bacteria; Actinobacteria; Actinobacteridae; Actinomycetales;
OC   Micrococcineae; Micrococcaceae; Arthrobacter.
OX   NCBI_TaxID=290340;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=17194220; DOI=10.1371/journal.pgen.0020214;
RA   Mongodin E.F., Shapir N., Daugherty S.C., DeBoy R.T., Emerson J.B.,
RA   Shvartzbeyn A., Radune D., Vamathevan J., Riggs F., Grinberg V.,
RA   Khouri H.M., Wackett L.P., Nelson K.E., Sadowsky M.J.;
RT   "Secrets of soil survival revealed by the genome sequence of
RT   Arthrobacter aurescens TC1.";
RL   PLoS Genet. 2:2094-2106(2006).
CC   -!- FUNCTION: Catalyzes the oxidation of 5,10-
CC       methylenetetrahydrofolate to 5,10-methenyltetrahydrofolate and
CC       then the hydrolysis of 5,10-methenyltetrahydrofolate to 10-
CC       formyltetrahydrofolate (By similarity).
CC   -!- CATALYTIC ACTIVITY: 5,10-methylenetetrahydrofolate + NADP(+) =
CC       5,10-methenyltetrahydrofolate + NADPH.
CC   -!- CATALYTIC ACTIVITY: 5,10-methenyltetrahydrofolate + H(2)O = 10-
CC       formyltetrahydrofolate.
CC   -!- PATHWAY: One-carbon metabolism; tetrahydrofolate pathway.
CC   -!- SUBUNIT: Homodimer (By similarity).
CC   -!- SIMILARITY: Belongs to the tetrahydrofolate
CC       dehydrogenase/cyclohydrolase family.
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DR   EMBL; CP000474; ABM06658.1; -; Genomic_DNA.
DR   RefSeq; YP_947013.1; -.
DR   GeneID; 4639361; -.
DR   GenomeReviews; CP000474_GR; AAur_1228.
DR   KEGG; aau:AAur_1228; -.
DR   TIGR; AAur_1228; -.
DR   OMA; A1R451; VDLKQRV.
DR   GO; GO:0005488; F:binding; IEA:InterPro.
DR   GO; GO:0004477; F:methenyltetrahydrofolate cyclohydrolase act...; IEA:HAMAP.
DR   GO; GO:0004488; F:methylenetetrahydrofolate dehydrogenase (NA...; IEA:HAMAP.
DR   GO; GO:0009396; P:folic acid and derivative biosynthetic process; IEA:InterPro.
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:0006730; P:one-carbon compound metabolic process; IEA:UniProtKB-KW.
DR   GO; GO:0055114; P:oxidation reduction; IEA:UniProtKB-KW.
DR   GO; GO:0006164; P:purine nucleotide biosynthetic process; IEA:UniProtKB-KW.
DR   HAMAP; MF_01576; -; 1.
DR   InterPro; IPR000672; THF_DH/CycHdrlase.
DR   Pfam; PF00763; THF_DHG_CYH; 1.
DR   Pfam; PF02882; THF_DHG_CYH_C; 1.
DR   PRINTS; PR00085; THFDHDRGNASE.
DR   ProDom; PD002300; THFDhg/Cyc_hydro; 1.
DR   PROSITE; PS00766; THF_DHG_CYH_1; FALSE_NEG.
DR   PROSITE; PS00767; THF_DHG_CYH_2; FALSE_NEG.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Complete proteome; Histidine biosynthesis;
KW   Hydrolase; Methionine biosynthesis; Multifunctional enzyme; NADP;
KW   One-carbon metabolism; Oxidoreductase; Purine biosynthesis.
FT   CHAIN         1    297       Bifunctional protein folD 2.
FT                                /FTId=PRO_0000305791.
SQ   SEQUENCE   297 AA;  31093 MW;  36A4821A4F5672EB CRC64;
     MTQSTAQILD GKATAAAIKA ELTTRVSVLA AKGIVPGLGT ILVGSDPGST WYVGGKHKDC
     AEVGIQSIRR DLPEDISQED LLEVVRELND NPECTGYIVQ LPLPKHIDQD VILEAMDPDK
     DADGLHPMNL GRLVANVNGE MKSPLPCTPK GCVELLRRHN IELKGKRVLV VGRGVTIGRP
     IGLLLTRKEV NATVILAHTG TVDLPAELKQ ADVVIAAAGV PHMIKAEDLK PGAVVLDVGV
     SRVDDGNGKA VVTGDVDPAA ADVAAWLSPN PGGVGPMTRA MLLANVVESA ERQAGIA
//