ID   GCH1_DESRM              Reviewed;         187 AA.
AC   A4J5D0;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2007, sequence version 1.
DT   27-MAR-2024, entry version 94.
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};
GN   OrderedLocusNames=Dred_1758;
OS   Desulforamulus reducens (strain ATCC BAA-1160 / DSM 100696 / MI-1)
OS   (Desulfotomaculum reducens).
OC   Bacteria; Bacillota; Clostridia; Eubacteriales; Peptococcaceae;
OC   Desulforamulus.
OX   NCBI_TaxID=349161;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1160 / DSM 100696 / MI-1;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Sims D., Brettin T., Bruce D., Han C., Tapia R., Schmutz J., Larimer F.,
RA   Land M., Hauser L., Kyrpides N., Kim E., Tebo B.M., Richardson P.;
RT   "Complete sequence of Desulfotomaculum reducens MI-1.";
RL   Submitted (MAR-2007) to the EMBL/GenBank/DDBJ databases.
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: Homomer. {ECO:0000255|HAMAP-Rule:MF_00223}.
CC   -!- SIMILARITY: Belongs to the GTP cyclohydrolase I family.
CC       {ECO:0000255|HAMAP-Rule:MF_00223}.
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DR   EMBL; CP000612; ABO50283.1; -; Genomic_DNA.
DR   RefSeq; WP_011878097.1; NC_009253.1.
DR   AlphaFoldDB; A4J5D0; -.
DR   SMR; A4J5D0; -.
DR   STRING; 349161.Dred_1758; -.
DR   KEGG; drm:Dred_1758; -.
DR   eggNOG; COG0302; Bacteria.
DR   HOGENOM; CLU_049768_3_3_9; -.
DR   OrthoDB; 9801207at2; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000001556; 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   CDD; cd00642; GTP_cyclohydro1; 1.
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   NCBIfam; TIGR00063; folE; 1.
DR   PANTHER; PTHR11109:SF7; GTP CYCLOHYDROLASE 1; 1.
DR   PANTHER; PTHR11109; GTP CYCLOHYDROLASE I; 1.
DR   Pfam; PF01227; GTP_cyclohydroI; 1.
DR   SUPFAM; SSF55620; Tetrahydrobiopterin biosynthesis enzymes-like; 1.
DR   PROSITE; PS00859; GTP_CYCLOHYDROL_1_1; 1.
DR   PROSITE; PS00860; GTP_CYCLOHYDROL_1_2; 1.
PE   3: Inferred from homology;
KW   GTP-binding; Hydrolase; Metal-binding; Nucleotide-binding;
KW   One-carbon metabolism; Reference proteome; Zinc.
FT   CHAIN           1..187
FT                   /note="GTP cyclohydrolase 1"
FT                   /id="PRO_1000071762"
FT   BINDING         76
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         79
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         148
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
SQ   SEQUENCE   187 AA;  21033 MW;  A4477D5005D97E36 CRC64;
     MFDLPKIEKA VKMILEAIGE DPNREGLEET PARVARMYQE IFAGLGEDPE EHLGKTFSEE
     HEEMVIVKDI RLFSMCEHHL IPFIGKAHVC YIPRNGNVTG LSKLARLVNG YARRPQLQER
     LTKQIADAIM KRLNPYGVVV VVEAEHLCMS MRGVRSPGAR TVTSAVRGIF KKNEASRAEA
     MSLIMKS
//