ID B9TD76_RICCO Unreviewed; 206 AA.
AC B9TD76;
DT 24-MAR-2009, integrated into UniProtKB/TrEMBL.
DT 24-MAR-2009, sequence version 1.
DT 24-JAN-2024, entry version 46.
DE RecName: Full=GTP cyclohydrolase II {ECO:0000256|ARBA:ARBA00012762};
DE EC=3.5.4.25 {ECO:0000256|ARBA:ARBA00012762};
DE Flags: Fragment;
GN ORFNames=RCOM_1897150 {ECO:0000313|EMBL:EEF26188.1};
OS Ricinus communis (Castor bean).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; fabids; Malpighiales; Euphorbiaceae; Acalyphoideae; Acalypheae;
OC Ricinus.
OX NCBI_TaxID=3988 {ECO:0000313|Proteomes:UP000008311};
RN [1] {ECO:0000313|Proteomes:UP000008311}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Hale {ECO:0000313|Proteomes:UP000008311};
RX PubMed=20729833; DOI=10.1038/nbt.1674;
RA Chan A.P., Crabtree J., Zhao Q., Lorenzi H., Orvis J., Puiu D.,
RA Melake-Berhan A., Jones K.M., Redman J., Chen G., Cahoon E.B., Gedil M.,
RA Stanke M., Haas B.J., Wortman J.R., Fraser-Liggett C.M., Ravel J.,
RA Rabinowicz P.D.;
RT "Draft genome sequence of the oilseed species Ricinus communis.";
RL Nat. Biotechnol. 28:951-956(2010).
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 -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005104}.
CC -!- SIMILARITY: In the C-terminal section; belongs to the GTP
CC cyclohydrolase II family. {ECO:0000256|ARBA:ARBA00008976}.
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DR EMBL; EQ977942; EEF26188.1; -; Genomic_DNA.
DR AlphaFoldDB; B9TD76; -.
DR STRING; 3988.B9TD76; -.
DR eggNOG; KOG1284; Eukaryota.
DR InParanoid; B9TD76; -.
DR Proteomes; UP000008311; Unassembled WGS sequence.
DR GO; GO:0009507; C:chloroplast; IBA:GO_Central.
DR GO; GO:0008686; F:3,4-dihydroxy-2-butanone-4-phosphate synthase activity; IBA:GO_Central.
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:0009231; P:riboflavin biosynthetic process; IBA:GO_Central.
DR CDD; cd00641; GTP_cyclohydro2; 1.
DR Gene3D; 3.40.50.10990; GTP cyclohydrolase II; 1.
DR HAMAP; MF_00179; RibA; 1.
DR InterPro; IPR032677; GTP_cyclohydro_II.
DR InterPro; IPR000926; RibA.
DR InterPro; IPR036144; RibA-like_sf.
DR NCBIfam; TIGR00505; ribA; 1.
DR PANTHER; PTHR21327; GTP CYCLOHYDROLASE II-RELATED; 1.
DR PANTHER; PTHR21327:SF41; MONOFUNCTIONAL RIBOFLAVIN BIOSYNTHESIS PROTEIN RIBA 2, CHLOROPLASTIC; 1.
DR Pfam; PF00925; GTP_cyclohydro2; 1.
DR SUPFAM; SSF142695; RibA-like; 1.
PE 3: Inferred from homology;
KW GTP-binding {ECO:0000256|ARBA:ARBA00023134};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000313|EMBL:EEF26188.1};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741};
KW Reference proteome {ECO:0000313|Proteomes:UP000008311};
KW Riboflavin biosynthesis {ECO:0000256|ARBA:ARBA00022619}.
FT DOMAIN 7..171
FT /note="GTP cyclohydrolase II"
FT /evidence="ECO:0000259|Pfam:PF00925"
FT NON_TER 1
FT /evidence="ECO:0000313|EMBL:EEF26188.1"
SQ SEQUENCE 206 AA; 22350 MW; 792046F4A16F6198 CRC64;
ALITPKASAN LPTEYGTYRL HAFEDNRTGI EHIALVLGDV AGHTSVLTRL HSECLTGDVF
GSQRCDCGEQ FKQAQRLIQQ QGKGVIVYLR GHEGRGIGLS NKVRAYALQE QGLDTVEANV
ALGLPVDQRE YDIAVGILQH LQVASIRLLS NNPDKSQAMS DWGLTVEAVV PLEVAGNPQS
AAYLSTKKHK LGHQLALIDS HSPPRN
//
