ID   GCH1_NOSP7              Reviewed;         235 AA.
AC   B2J1L7;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-JUN-2008, sequence version 1.
DT   27-MAR-2024, entry version 79.
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=Npun_R1707;
OS   Nostoc punctiforme (strain ATCC 29133 / PCC 73102).
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=63737;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29133 / PCC 73102;
RX   PubMed=23463784; DOI=10.1104/pp.112.213116;
RA   Ekman M., Picossi S., Campbell E.L., Meeks J.C., Flores E.;
RT   "A Nostoc punctiforme Sugar Transporter Necessary to Establish a
RT   Cyanobacterium-Plant Symbiosis.";
RL   Plant Physiol. 161:1984-1992(2013).
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; CP001037; ACC80378.1; -; Genomic_DNA.
DR   RefSeq; WP_012408396.1; NC_010628.1.
DR   AlphaFoldDB; B2J1L7; -.
DR   SMR; B2J1L7; -.
DR   STRING; 63737.Npun_R1707; -.
DR   EnsemblBacteria; ACC80378; ACC80378; Npun_R1707.
DR   KEGG; npu:Npun_R1707; -.
DR   eggNOG; COG0302; Bacteria.
DR   HOGENOM; CLU_049768_2_2_3; -.
DR   OrthoDB; 9801207at2; -.
DR   PhylomeDB; B2J1L7; -.
DR   UniPathway; UPA00848; UER00151.
DR   Proteomes; UP000001191; 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..235
FT                   /note="GTP cyclohydrolase 1"
FT                   /id="PRO_1000100187"
FT   REGION          1..42
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..16
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         121
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         124
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
FT   BINDING         192
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00223"
SQ   SEQUENCE   235 AA;  26706 MW;  FA83511E5291C45A CRC64;
     MTIASSNGSN YSQSPLIPDL ADAITPRPDR NTNNGRQADV FPPKEEHIEE MKDAVRKIIL
     GVGEDPEREG LLKTPKRVAE AMRFLTSGYN QSLEELVNDA IFDEGHNEMV LVRDINFFSL
     CEHHMLPFMG RAHVAYIPNQ KVVGLSKLAR IVEMYSRRLQ VQERLTRQIA EAIQTILEPR
     GVAVVMEASH MCMVMRGVQK PGSWTVTSAM VGVFQEEHKT REEFFNLIRH QPAFF
//