ID   GCH4_HERAR              Reviewed;         261 AA.
AC   A4G1X0;
DT   24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   17-APR-2007, sequence version 1.
DT   25-MAY-2022, entry version 74.
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=HEAR0280;
OS   Herminiimonas arsenicoxydans.
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Oxalobacteraceae; Herminiimonas.
OX   NCBI_TaxID=204773;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ULPAs1;
RX   PubMed=17432936; DOI=10.1371/journal.pgen.0030053;
RA   Muller D., Medigue C., Koechler S., Barbe V., Barakat M., Talla E.,
RA   Bonnefoy V., Krin E., Arsene-Ploetze F., Carapito C., Chandler M.,
RA   Cournoyer B., Cruveiller S., Dossat C., Duval S., Heymann M., Leize E.,
RA   Lieutaud A., Lievremont D., Makita Y., Mangenot S., Nitschke W., Ortet P.,
RA   Perdrial N., Schoepp B., Siguier P., Simeonova D.D., Rouy Z., Segurens B.,
RA   Turlin E., Vallenet D., van Dorsselaer A., Weiss S., Weissenbach J.,
RA   Lett M.-C., Danchin A., Bertin P.N.;
RT   "A tale of two oxidation states: bacterial colonization of arsenic-rich
RT   environments.";
RL   PLoS Genet. 3:518-530(2007).
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; CU207211; CAL60507.1; -; Genomic_DNA.
DR   AlphaFoldDB; A4G1X0; -.
DR   SMR; A4G1X0; -.
DR   STRING; 204773.HEAR0280; -.
DR   EnsemblBacteria; CAL60507; CAL60507; HEAR0280.
DR   KEGG; har:HEAR0280; -.
DR   eggNOG; COG1469; Bacteria.
DR   HOGENOM; CLU_062816_1_1_4; -.
DR   OMA; PCSQGMS; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000006697; 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..261
FT                   /note="GTP cyclohydrolase FolE2"
FT                   /id="PRO_0000297506"
FT   SITE            147
FT                   /note="May be catalytically important"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01527"
SQ   SEQUENCE   261 AA;  29114 MW;  FCC2733B8D531C39 CRC64;
     MSAIPDVQST PDTRNIVIQR VGVKGVRYPI TVKTSSGVQP SVGSWNMYVR LTEEQKGTHM
     SRFIALLEEN NQPLDVAVFG ALMRKMLVLL DADAGRIEVS FPYFINKTAP VSGVQSLMDY
     EVGLTGEMKN GELEVTLKVL VPVTSLCPCS KKISAYGAHN QRSHITVHAV LNGDLVVEEL
     IAKIEEQASC ELYGLLKRPD EKYVTERAYD NPKFVEDLVR DVAGMLNKDE RVLAYTLEAE
     NFESIHNHSA YALIERDKRL S