ID   GCH4_HAHCH              Reviewed;         304 AA.
AC   Q2SLC0;
DT   29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   25-MAY-2022, entry version 78.
DE   RecName: Full=GTP cyclohydrolase FolE2 {ECO:0000255|HAMAP-Rule:MF_01527};
DE            EC=3.5.4.16 {ECO:0000255|HAMAP-Rule:MF_01527};
GN   Name=folE2 {ECO:0000255|HAMAP-Rule:MF_01527}; OrderedLocusNames=HCH_01706;
OS   Hahella chejuensis (strain KCTC 2396).
OC   Bacteria; Proteobacteria; 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: Converts GTP to 7,8-dihydroneopterin triphosphate.
CC       {ECO:0000255|HAMAP-Rule:MF_01527}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=GTP + H2O = 7,8-dihydroneopterin 3'-triphosphate + formate +
CC         H(+); Xref=Rhea:RHEA:17473, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15740, ChEBI:CHEBI:37565, ChEBI:CHEBI:58462; EC=3.5.4.16;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01527};
CC   -!- PATHWAY: Cofactor biosynthesis; 7,8-dihydroneopterin triphosphate
CC       biosynthesis; 7,8-dihydroneopterin triphosphate from GTP: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_01527}.
CC   -!- SIMILARITY: Belongs to the GTP cyclohydrolase IV family.
CC       {ECO:0000255|HAMAP-Rule:MF_01527}.
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DR   EMBL; CP000155; ABC28554.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q2SLC0; -.
DR   SMR; Q2SLC0; -.
DR   STRING; 349521.HCH_01706; -.
DR   EnsemblBacteria; ABC28554; ABC28554; HCH_01706.
DR   KEGG; hch:HCH_01706; -.
DR   eggNOG; COG1469; Bacteria.
DR   HOGENOM; CLU_062816_0_0_6; -.
DR   OMA; AKGIHMS; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000000238; Chromosome.
DR   GO; GO:0003934; F:GTP cyclohydrolase I activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0035998; P:7,8-dihydroneopterin 3'-triphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR   HAMAP; MF_01527_B; GTP_cyclohydrol_B; 1.
DR   InterPro; IPR022838; GTP_cyclohydrolase_FolE2.
DR   InterPro; IPR003801; GTP_cyclohydrolase_FolE2/MptA.
DR   PANTHER; PTHR36445; PTHR36445; 1.
DR   Pfam; PF02649; GCHY-1; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Reference proteome.
FT   CHAIN           1..304
FT                   /note="GTP cyclohydrolase FolE2"
FT                   /id="PRO_0000289492"
FT   SITE            156
FT                   /note="May be catalytically important"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01527"
SQ   SEQUENCE   304 AA;  34042 MW;  57CE0983D7FB7CBD CRC64;
     MQIVRALPDI AKTRTEFETY TLQWVGMEDI AVPLTLNIGG GKQQSLPAKA NVYVSLDDAA
     EKGIHMSRLH AILNQLASQV CDKEGLDLLL RNMVASQGKI SRSAKVELVF DLLLPKPSLL
     SNETGFQTYR IEIGGQCLSE KYDYSLKITV PYSSTCPCSA ALSRQLFSDA IDNEFSTSRI
     DKQELLSWAL TSTVATPHSQ RSYAYLNLLL GNHGWPSLSS FIMQIEEAIG TPVQTMVKRT
     DEQEFARLNA DNLMFCEDAA RNVKTLLEQS SWIEDYWFKV EHQESLHAHN AVVIDQKYSK
     GAML