HIUH_RALSO
ID HIUH_RALSO Reviewed; 117 AA.
AC Q8XXJ7;
DT 02-MAY-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2002, sequence version 1.
DT 03-AUG-2022, entry version 102.
DE RecName: Full=5-hydroxyisourate hydrolase;
DE Short=HIU hydrolase;
DE Short=HIUHase;
DE EC=3.5.2.17;
GN OrderedLocusNames=RSc2116; ORFNames=RS01488;
OS Ralstonia solanacearum (strain GMI1000) (Pseudomonas solanacearum).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Ralstonia.
OX NCBI_TaxID=267608;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GMI1000;
RX PubMed=11823852; DOI=10.1038/415497a;
RA Salanoubat M., Genin S., Artiguenave F., Gouzy J., Mangenot S., Arlat M.,
RA Billault A., Brottier P., Camus J.-C., Cattolico L., Chandler M.,
RA Choisne N., Claudel-Renard C., Cunnac S., Demange N., Gaspin C., Lavie M.,
RA Moisan A., Robert C., Saurin W., Schiex T., Siguier P., Thebault P.,
RA Whalen M., Wincker P., Levy M., Weissenbach J., Boucher C.A.;
RT "Genome sequence of the plant pathogen Ralstonia solanacearum.";
RL Nature 415:497-502(2002).
CC -!- FUNCTION: Catalyzes the hydrolysis of 5-hydroxyisourate (HIU) to 2-oxo-
CC 4-hydroxy-4-carboxy-5-ureidoimidazoline (OHCU). {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5-hydroxyisourate + H2O = 5-hydroxy-2-oxo-4-ureido-2,5-
CC dihydro-1H-imidazole-5-carboxylate + H(+); Xref=Rhea:RHEA:23736,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:18072,
CC ChEBI:CHEBI:58639; EC=3.5.2.17;
CC -!- SUBUNIT: Homotetramer. {ECO:0000250}.
CC -!- MISCELLANEOUS: HIU hydrolysis also occurs spontaneously, but more
CC slowly.
CC -!- SIMILARITY: Belongs to the transthyretin family. 5-hydroxyisourate
CC hydrolase subfamily. {ECO:0000305}.
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DR EMBL; AL646052; CAD15823.1; -; Genomic_DNA.
DR RefSeq; WP_011002047.1; NC_003295.1.
DR AlphaFoldDB; Q8XXJ7; -.
DR SMR; Q8XXJ7; -.
DR STRING; 267608.RSc2116; -.
DR EnsemblBacteria; CAD15823; CAD15823; RSc2116.
DR GeneID; 60501628; -.
DR KEGG; rso:RSc2116; -.
DR eggNOG; COG2351; Bacteria.
DR HOGENOM; CLU_115536_1_1_4; -.
DR OMA; ENQNYHI; -.
DR Proteomes; UP000001436; Chromosome.
DR GO; GO:0033971; F:hydroxyisourate hydrolase activity; IEA:UniProtKB-EC.
DR GO; GO:0006144; P:purine nucleobase metabolic process; IEA:UniProtKB-KW.
DR CDD; cd05822; TLP_HIUase; 1.
DR Gene3D; 2.60.40.180; -; 1.
DR InterPro; IPR014306; Hydroxyisourate_hydrolase.
DR InterPro; IPR023418; Thyroxine_BS.
DR InterPro; IPR000895; Transthyretin/HIU_hydrolase.
DR InterPro; IPR023416; Transthyretin/HIU_hydrolase_d.
DR InterPro; IPR036817; Transthyretin/HIU_hydrolase_sf.
DR InterPro; IPR023419; Transthyretin_CS.
DR PANTHER; PTHR10395; PTHR10395; 1.
DR Pfam; PF00576; Transthyretin; 1.
DR PRINTS; PR00189; TRNSTHYRETIN.
DR SUPFAM; SSF49472; SSF49472; 1.
DR TIGRFAMs; TIGR02962; hdxy_isourate; 1.
DR PROSITE; PS00768; TRANSTHYRETIN_1; 1.
DR PROSITE; PS00769; TRANSTHYRETIN_2; 1.
PE 3: Inferred from homology;
KW Hydrolase; Purine metabolism; Reference proteome.
FT CHAIN 1..117
FT /note="5-hydroxyisourate hydrolase"
FT /id="PRO_0000050614"
FT BINDING 7
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 45
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 114
FT /ligand="substrate"
FT /evidence="ECO:0000250"
SQ SEQUENCE 117 AA; 12673 MW; 3D4A3C1D58D3CDFC CRC64;
MGRLTTHVLD TAAGTPGKDL AITLFKIVNN LRQPIKTVRT NHDGRCEAPL LEGEALQAGI
YELDFAVGDY YRAAGVSLPD PAFLDVVTLR FGVADAGAHY HVPLLVSPWS YSTYRGS
