ID   GCH1_RHOPA              Reviewed;         229 AA.
AC   Q6N4E7;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=GTP cyclohydrolase 1 {ECO:0000255|HAMAP-Rule:MF_00223};
DE            EC=3.5.4.16 {ECO:0000255|HAMAP-Rule:MF_00223};
DE   AltName: Full=GTP cyclohydrolase I {ECO:0000255|HAMAP-Rule:MF_00223};
DE            Short=GTP-CH-I {ECO:0000255|HAMAP-Rule:MF_00223};
GN   Name=folE {ECO:0000255|HAMAP-Rule:MF_00223}; OrderedLocusNames=RPA3391;
OS   Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=258594;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-98 / CGA009;
RX   PubMed=14704707; DOI=10.1038/nbt923;
RA   Larimer F.W., Chain P., Hauser L., Lamerdin J.E., Malfatti S., Do L.,
RA   Land M.L., Pelletier D.A., Beatty J.T., Lang A.S., Tabita F.R.,
RA   Gibson J.L., Hanson T.E., Bobst C., Torres y Torres J.L., Peres C.,
RA   Harrison F.H., Gibson J., Harwood C.S.;
RT   "Complete genome sequence of the metabolically versatile photosynthetic
RT   bacterium Rhodopseudomonas palustris.";
RL   Nat. Biotechnol. 22:55-61(2004).
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_00223};
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_00223}.
CC   -!- SUBUNIT: Toroid-shaped homodecamer, composed of two pentamers of five
CC       dimers. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the GTP cyclohydrolase I family.
CC       {ECO:0000255|HAMAP-Rule:MF_00223}.
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DR   EMBL; BX572603; CAE28832.1; -; Genomic_DNA.
DR   RefSeq; WP_011158933.1; NC_005296.1.
DR   AlphaFoldDB; Q6N4E7; -.
DR   SMR; Q6N4E7; -.
DR   STRING; 258594.RPA3391; -.
DR   PRIDE; Q6N4E7; -.
DR   EnsemblBacteria; CAE28832; CAE28832; RPA3391.
DR   GeneID; 66894481; -.
DR   KEGG; rpa:RPA3391; -.
DR   eggNOG; COG0302; Bacteria.
DR   HOGENOM; CLU_049768_3_1_5; -.
DR   OMA; CEHMCMS; -.
DR   PhylomeDB; Q6N4E7; -.
DR   BioCyc; RPAL258594:TX73_RS17290-MON; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000001426; Chromosome.
DR   GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR   GO; GO:0003934; F:GTP cyclohydrolase I activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0035998; P:7,8-dihydroneopterin 3'-triphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0046654; P:tetrahydrofolate biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.10.286.10; -; 1.
DR   Gene3D; 3.30.1130.10; -; 1.
DR   HAMAP; MF_00223; FolE; 1.
DR   InterPro; IPR043133; GTP-CH-I_C/QueF.
DR   InterPro; IPR043134; GTP-CH-I_N.
DR   InterPro; IPR001474; GTP_CycHdrlase_I.
DR   InterPro; IPR018234; GTP_CycHdrlase_I_CS.
DR   InterPro; IPR020602; GTP_CycHdrlase_I_dom.
DR   PANTHER; PTHR11109; PTHR11109; 1.
DR   Pfam; PF01227; GTP_cyclohydroI; 1.
DR   TIGRFAMs; TIGR00063; folE; 1.
DR   PROSITE; PS00859; GTP_CYCLOHYDROL_1_1; 1.
PE   3: Inferred from homology;
KW   GTP-binding; Hydrolase; Metal-binding; Nucleotide-binding;
KW   One-carbon metabolism; Reference proteome; Zinc.
FT   CHAIN           1..229
FT                   /note="GTP cyclohydrolase 1"
FT                   /id="PRO_1000043720"
FT   REGION          1..26
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         118
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         121
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         189
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
SQ   SEQUENCE   229 AA;  25702 MW;  DC0390EE15EF4458 CRC64;
     MDAKIKPIRG TNPAEGRPEF QPAELEPSEF LEVAVQPDQP RPSRAEAEAA VKTLLSYIGE
     NTEREGLIDT PRRVVEAYDE LFQGYHQCPK EVLERTFGET AGYDDFVLVR NISFTSHCEH
     HVMPFYGKAH IAYTPVERVV GLSKLARLVD IFARRLQTQE HLTAQIAAAI DEVLKPRGVA
     VLLEAEHTCM SVRGIAKKGA TTFTSRYTGV FRDNPAEQAR FMSMVRDRG