GCH3_METMP
ID GCH3_METMP Reviewed; 266 AA.
AC Q6M066;
DT 13-SEP-2004, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 87.
DE RecName: Full=GTP cyclohydrolase III {ECO:0000255|HAMAP-Rule:MF_00608};
DE EC=3.5.4.29 {ECO:0000255|HAMAP-Rule:MF_00608};
GN Name=gch3 {ECO:0000255|HAMAP-Rule:MF_00608}; OrderedLocusNames=MMP0405;
OS Methanococcus maripaludis (strain S2 / LL).
OC Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC Methanococcaceae; Methanococcus.
OX NCBI_TaxID=267377;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=S2 / LL;
RX PubMed=15466049; DOI=10.1128/jb.186.20.6956-6969.2004;
RA Hendrickson E.L., Kaul R., Zhou Y., Bovee D., Chapman P., Chung J.,
RA Conway de Macario E., Dodsworth J.A., Gillett W., Graham D.E., Hackett M.,
RA Haydock A.K., Kang A., Land M.L., Levy R., Lie T.J., Major T.A.,
RA Moore B.C., Porat I., Palmeiri A., Rouse G., Saenphimmachak C., Soell D.,
RA Van Dien S., Wang T., Whitman W.B., Xia Q., Zhang Y., Larimer F.W.,
RA Olson M.V., Leigh J.A.;
RT "Complete genome sequence of the genetically tractable hydrogenotrophic
RT methanogen Methanococcus maripaludis.";
RL J. Bacteriol. 186:6956-6969(2004).
CC -!- FUNCTION: Catalyzes the formation of 2-amino-5-formylamino-6-
CC ribofuranosylamino-4(3H)-pyrimidinone ribonucleotide monophosphate and
CC inorganic phosphate from GTP. Also has an independent pyrophosphate
CC phosphohydrolase activity. {ECO:0000255|HAMAP-Rule:MF_00608}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + 3 H2O = 2-amino-5-formylamino-6-(5-phospho-D-
CC ribosylamino)pyrimidin-4(3H)-one + 2 H(+) + 2 phosphate;
CC Xref=Rhea:RHEA:22468, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:37565, ChEBI:CHEBI:43474, ChEBI:CHEBI:57258; EC=3.5.4.29;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00608};
CC -!- SIMILARITY: Belongs to the archaeal-type GTP cyclohydrolase family.
CC {ECO:0000255|HAMAP-Rule:MF_00608}.
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DR EMBL; BX950229; CAF29961.1; -; Genomic_DNA.
DR RefSeq; WP_011170349.1; NC_005791.1.
DR AlphaFoldDB; Q6M066; -.
DR SMR; Q6M066; -.
DR STRING; 267377.MMP0405; -.
DR EnsemblBacteria; CAF29961; CAF29961; MMP0405.
DR GeneID; 41278843; -.
DR KEGG; mmp:MMP0405; -.
DR PATRIC; fig|267377.15.peg.409; -.
DR eggNOG; arCOG04202; Archaea.
DR HOGENOM; CLU_080076_0_0_2; -.
DR OMA; VQIAHID; -.
DR OrthoDB; 56576at2157; -.
DR BioCyc; MMAR267377:MMP_RS02160-MON; -.
DR Proteomes; UP000000590; Chromosome.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0043740; F:GTP cyclohydrolase IIa activity; IEA:UniProtKB-EC.
DR GO; GO:0009058; P:biosynthetic process; IEA:InterPro.
DR Gene3D; 3.30.70.1230; -; 1.
DR Gene3D; 3.30.70.270; -; 1.
DR HAMAP; MF_00608; GTP_cyclohydro_3; 1.
DR InterPro; IPR007839; GTP_CycHdrlase_3.
DR InterPro; IPR029787; Nucleotide_cyclase.
DR InterPro; IPR043128; Rev_trsase/Diguanyl_cyclase.
DR PANTHER; PTHR42202; PTHR42202; 1.
DR Pfam; PF05165; GCH_III; 1.
DR PIRSF; PIRSF009265; GTP_cyclohydro_3; 1.
PE 3: Inferred from homology;
KW GTP-binding; Hydrolase; Nucleotide-binding; Reference proteome.
FT CHAIN 1..266
FT /note="GTP cyclohydrolase III"
FT /id="PRO_0000145755"
SQ SEQUENCE 266 AA; 29942 MW; 5869B1483DDC2C96 CRC64;
MIQITVVQID NYGPWTVTPN PRRESDLQAL QSRLYCDMNL QFGAHKGLAF YTRFDNIIAI
TNGIDLETHK RIQNSVKNRY PFTVSMAVAS AETAYEAQKL ATKTIQEYGS AQDDVRKEVL
DVANEFVSNG YVQLAHVDIN DITGKLTDLE TAYDTYLSVQ KTKLKLMEEL KKYDSLGFFI
GGDNFMCPCN GMNEKDFLCM FEDIKDSCGI ELKAGIGIGK TAEDASNLAD IGLEVIREGK
TDSQVYTLKQ EIDEQKNVPY NYMCPI
