ID F4BZQ9_METSG Unreviewed; 402 AA.
AC F4BZQ9;
DT 28-JUN-2011, integrated into UniProtKB/TrEMBL.
DT 28-JUN-2011, sequence version 1.
DT 27-MAR-2024, entry version 64.
DE RecName: Full=GTP cyclohydrolase II {ECO:0000256|ARBA:ARBA00012762};
DE EC=3.5.4.25 {ECO:0000256|ARBA:ARBA00012762};
GN Name=ribBA {ECO:0000313|EMBL:AEB67879.1};
GN OrderedLocusNames=MCON_1155 {ECO:0000313|EMBL:AEB67879.1};
OS Methanothrix soehngenii (strain ATCC 5969 / DSM 3671 / JCM 10134 / NBRC
OS 103675 / OCM 69 / GP-6) (Methanosaeta concilii).
OC Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC Methanotrichales; Methanotrichaceae; Methanothrix.
OX NCBI_TaxID=990316 {ECO:0000313|EMBL:AEB67879.1, ECO:0000313|Proteomes:UP000007807};
RN [1] {ECO:0000313|EMBL:AEB67879.1, ECO:0000313|Proteomes:UP000007807}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 5969 / DSM 3671 / JCM 10134 / NBRC 103675 / OCM 69 / GP-6
RC {ECO:0000313|Proteomes:UP000007807};
RX PubMed=21571998; DOI=10.1128/JB.05031-11;
RA Barber R.D., Zhang L., Harnack M., Olson M.V., Kaul R., Ingram-Smith C.,
RA Smith K.S.;
RT "Complete genome sequence of Methanosaeta concilii, a specialist in
RT aceticlastic methanogenesis.";
RL J. Bacteriol. 193:3668-3669(2011).
CC -!- CATALYTIC ACTIVITY:
CC Reaction=GTP + 4 H2O = 2,5-diamino-6-hydroxy-4-(5-phosphoribosylamino)-
CC pyrimidine + formate + 3 H(+) + 2 phosphate; Xref=Rhea:RHEA:23704,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15740,
CC ChEBI:CHEBI:37565, ChEBI:CHEBI:43474, ChEBI:CHEBI:58614; EC=3.5.4.25;
CC Evidence={ECO:0000256|ARBA:ARBA00029293};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|ARBA:ARBA00001947};
CC -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 5-amino-6-(D-
CC ribitylamino)uracil from GTP: step 1/4.
CC {ECO:0000256|ARBA:ARBA00004853}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the DHBP synthase
CC family. {ECO:0000256|ARBA:ARBA00005520}.
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DR EMBL; CP002565; AEB67879.1; -; Genomic_DNA.
DR RefSeq; WP_013718928.1; NC_015416.1.
DR AlphaFoldDB; F4BZQ9; -.
DR STRING; 990316.MCON_1155; -.
DR GeneID; 10460803; -.
DR KEGG; mcj:MCON_1155; -.
DR HOGENOM; CLU_020273_1_2_2; -.
DR InParanoid; F4BZQ9; -.
DR OrthoDB; 25735at2157; -.
DR UniPathway; UPA00275; UER00400.
DR Proteomes; UP000007807; Chromosome.
DR GO; GO:0008686; F:3,4-dihydroxy-2-butanone-4-phosphate synthase activity; IEA:InterPro.
DR GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
DR GO; GO:0003935; F:GTP cyclohydrolase II activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd00641; GTP_cyclohydro2; 1.
DR Gene3D; 3.90.870.10; DHBP synthase; 1.
DR Gene3D; 3.40.50.10990; GTP cyclohydrolase II; 1.
DR HAMAP; MF_00179; RibA; 1.
DR HAMAP; MF_00180; RibB; 1.
DR HAMAP; MF_01283; RibBA; 1.
DR InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
DR InterPro; IPR000422; DHBP_synthase_RibB.
DR InterPro; IPR032677; GTP_cyclohydro_II.
DR InterPro; IPR000926; RibA.
DR InterPro; IPR036144; RibA-like_sf.
DR InterPro; IPR016299; Riboflavin_synth_RibBA.
DR NCBIfam; TIGR00505; ribA; 1.
DR NCBIfam; TIGR00506; ribB; 1.
DR PANTHER; PTHR21327:SF18; 3,4-DIHYDROXY-2-BUTANONE 4-PHOSPHATE SYNTHASE; 1.
DR PANTHER; PTHR21327; GTP CYCLOHYDROLASE II-RELATED; 1.
DR Pfam; PF00926; DHBP_synthase; 1.
DR Pfam; PF00925; GTP_cyclohydro2; 1.
DR PIRSF; PIRSF001259; RibA; 1.
DR SUPFAM; SSF142695; RibA-like; 1.
DR SUPFAM; SSF55821; YrdC/RibB; 1.
PE 3: Inferred from homology;
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000313|EMBL:AEB67879.1};
KW Lyase {ECO:0000313|EMBL:AEB67879.1};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Reference proteome {ECO:0000313|Proteomes:UP000007807};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619}.
FT DOMAIN 209..372
FT /note="GTP cyclohydrolase II"
FT /evidence="ECO:0000259|Pfam:PF00925"
SQ SEQUENCE 402 AA; 44610 MW; 62B2E53BA04C976B CRC64;
MPFCTVEEAI SDIRAGRFII ILDDENRENE GDLMMAAENV TPEAINFMAR FGRGLICMPM
TAERLRELDI PLMTSQNTES MGTAFTVSVD ARINTTTGIS AFDRATTVHA LIDPVTRRND
IVTPGHLFPL QAKEGGVLRR TGHTEACVDL ARLAGLQPAG VIVEIMNDDG TMARLPQLER
FAQEHGLKML TIESLIRYRM QYEKLVCRIS EVSMPTEYGL FTAIGYESVL DGQCHIALVA
GDPTCPDALV RVHSECLTGD VFSSKRCDCG EQLRRALQLI SKNGNGVLLY MRQEGRGIGL
ANKLRAYALQ DGGSDTVEAN HRLGYPADLR DYGIGAQILV DLGIKQIRLL TNNPRKVIGL
EGYGLEIAER VPLEVEPNNI NRRYLETKRD KMHHLLLQNE GQ
//
