ID   GCH4_NITOC              Reviewed;         267 AA.
AC   Q3J9J7;
DT   29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   08-NOV-2005, sequence version 1.
DT   25-MAY-2022, entry version 82.
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=Noc_2039;
OS   Nitrosococcus oceani (strain ATCC 19707 / BCRC 17464 / JCM 30415 / NCIMB
OS   11848 / C-107).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Chromatiales; Chromatiaceae;
OC   Nitrosococcus.
OX   NCBI_TaxID=323261;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 19707 / BCRC 17464 / JCM 30415 / NCIMB 11848 / C-107;
RX   PubMed=16957257; DOI=10.1128/aem.00463-06;
RA   Klotz M.G., Arp D.J., Chain P.S.G., El-Sheikh A.F., Hauser L.J.,
RA   Hommes N.G., Larimer F.W., Malfatti S.A., Norton J.M., Poret-Peterson A.T.,
RA   Vergez L.M., Ward B.B.;
RT   "Complete genome sequence of the marine, chemolithoautotrophic, ammonia-
RT   oxidizing bacterium Nitrosococcus oceani ATCC 19707.";
RL   Appl. Environ. Microbiol. 72:6299-6315(2006).
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; CP000127; ABA58499.1; -; Genomic_DNA.
DR   RefSeq; WP_002808786.1; NC_007484.1.
DR   AlphaFoldDB; Q3J9J7; -.
DR   SMR; Q3J9J7; -.
DR   STRING; 323261.Noc_2039; -.
DR   EnsemblBacteria; ABA58499; ABA58499; Noc_2039.
DR   KEGG; noc:Noc_2039; -.
DR   eggNOG; COG1469; Bacteria.
DR   HOGENOM; CLU_062816_1_1_6; -.
DR   OMA; PCSQGMS; -.
DR   OrthoDB; 757842at2; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000006838; 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.
DR   TIGRFAMs; TIGR00294; TIGR00294; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Reference proteome.
FT   CHAIN           1..267
FT                   /note="GTP cyclohydrolase FolE2"
FT                   /id="PRO_0000289500"
FT   SITE            156
FT                   /note="May be catalytically important"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01527"
SQ   SEQUENCE   267 AA;  30856 MW;  270C6365E74C1E24 CRC64;
     MNPIVPAVER PIEDVQAKAD ERQIAINKVG IKDIRHPVRV SDRNGGEQHT VANFNMYVDL
     PHHFKGTHMS RFVEILNQHE HEITVRSFRE MLREMNHRLQ AESGHIEMVF PYFVTKQAPV
     SKVQSLMDYQ VTFIGEIKGD KPQITVKVVV PVTSLCPCSK QISDYGAHNQ RSHVTVAVRI
     EGFIWLEDII DLVEEEASCE IYGLLKRPDE KYVTERAYDN PKFVEDMVRD VAARLNQDDR
     VSAYRVESEN FESIHNHSAY AMIEREK