PYRR_STRP3
ID PYRR_STRP3 Reviewed; 173 AA.
AC P0DD74; Q8K7Y5;
DT 27-JUL-2011, integrated into UniProtKB/Swiss-Prot.
DT 27-JUL-2011, sequence version 1.
DT 03-AUG-2022, entry version 48.
DE RecName: Full=Bifunctional protein PyrR {ECO:0000255|HAMAP-Rule:MF_01219};
DE Includes:
DE RecName: Full=Pyrimidine operon regulatory protein {ECO:0000255|HAMAP-Rule:MF_01219};
DE Includes:
DE RecName: Full=Uracil phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01219};
DE Short=UPRTase {ECO:0000255|HAMAP-Rule:MF_01219};
DE EC=2.4.2.9 {ECO:0000255|HAMAP-Rule:MF_01219};
GN Name=pyrR {ECO:0000255|HAMAP-Rule:MF_01219}; OrderedLocusNames=SpyM3_0558;
OS Streptococcus pyogenes serotype M3 (strain ATCC BAA-595 / MGAS315).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=198466;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-595 / MGAS315;
RX PubMed=12122206; DOI=10.1073/pnas.152298499;
RA Beres S.B., Sylva G.L., Barbian K.D., Lei B., Hoff J.S., Mammarella N.D.,
RA Liu M.-Y., Smoot J.C., Porcella S.F., Parkins L.D., Campbell D.S.,
RA Smith T.M., McCormick J.K., Leung D.Y.M., Schlievert P.M., Musser J.M.;
RT "Genome sequence of a serotype M3 strain of group A Streptococcus: phage-
RT encoded toxins, the high-virulence phenotype, and clone emergence.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:10078-10083(2002).
CC -!- FUNCTION: Regulates transcriptional attenuation of the pyrimidine
CC nucleotide (pyr) operon by binding in a uridine-dependent manner to
CC specific sites on pyr mRNA. This disrupts an antiterminator hairpin in
CC the RNA and favors formation of a downstream transcription terminator,
CC leading to a reduced expression of downstream genes.
CC {ECO:0000255|HAMAP-Rule:MF_01219}.
CC -!- FUNCTION: Also displays a weak uracil phosphoribosyltransferase
CC activity which is not physiologically significant. {ECO:0000255|HAMAP-
CC Rule:MF_01219}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=diphosphate + UMP = 5-phospho-alpha-D-ribose 1-diphosphate +
CC uracil; Xref=Rhea:RHEA:13017, ChEBI:CHEBI:17568, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57865, ChEBI:CHEBI:58017; EC=2.4.2.9;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01219};
CC -!- SUBUNIT: Homodimer and homohexamer; in equilibrium. {ECO:0000255|HAMAP-
CC Rule:MF_01219}.
CC -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC family. PyrR subfamily. {ECO:0000255|HAMAP-Rule:MF_01219}.
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DR EMBL; AE014074; AAM79165.1; -; Genomic_DNA.
DR RefSeq; WP_002985093.1; NC_004070.1.
DR AlphaFoldDB; P0DD74; -.
DR SMR; P0DD74; -.
DR EnsemblBacteria; AAM79165; AAM79165; SpyM3_0558.
DR KEGG; spg:SpyM3_0558; -.
DR HOGENOM; CLU_094234_2_1_9; -.
DR OMA; PIQPDFC; -.
DR Proteomes; UP000000564; Chromosome.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004845; F:uracil phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006353; P:DNA-templated transcription, termination; IEA:UniProtKB-UniRule.
DR CDD; cd06223; PRTases_typeI; 1.
DR Gene3D; 3.40.50.2020; -; 1.
DR HAMAP; MF_01219; PyrR; 1.
DR InterPro; IPR000836; PRibTrfase_dom.
DR InterPro; IPR029057; PRTase-like.
DR InterPro; IPR023050; PyrR.
DR Pfam; PF00156; Pribosyltran; 1.
DR SUPFAM; SSF53271; SSF53271; 1.
PE 3: Inferred from homology;
KW Glycosyltransferase; RNA-binding; Transcription; Transcription regulation;
KW Transcription termination; Transferase.
FT CHAIN 1..173
FT /note="Bifunctional protein PyrR"
FT /id="PRO_0000183067"
FT MOTIF 93..105
FT /note="PRPP-binding"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01219"
FT BINDING 40..41
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 97..105
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 130
FT /ligand="substrate"
FT /evidence="ECO:0000250"
SQ SEQUENCE 173 AA; 19529 MW; 1DCD30B002F6D8B3 CRC64;
MKTKEIVDDV TMKRAITRIT YEIIERNKQL DNVVLAGIKT RGVFLARRIQ ERLHQLEGLD
LPIGELDIKP FRDDMRVEED TTLMSVDITG KDVILIDDVL YTGRTIRAAI DNLVSLGRPA
RVSLAVLVDR GHRELPIRAD YVGKNIPTSS VEEIVVEVVE VDGRDRVSII DPT