ID   PYRR_NATTJ              Reviewed;         182 AA.
AC   B2A2U8;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   20-MAY-2008, sequence version 1.
DT   25-MAY-2022, entry version 69.
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=Nther_2766;
OS   Natranaerobius thermophilus (strain ATCC BAA-1301 / DSM 18059 /
OS   JW/NM-WN-LF).
OC   Bacteria; Firmicutes; Clostridia; Natranaerobiales; Natranaerobiaceae;
OC   Natranaerobius.
OX   NCBI_TaxID=457570;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1301 / DSM 18059 / JW/NM-WN-LF;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Chertkov O., Brettin T., Detter J.C.,
RA   Han C., Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Lykidis A., Mesbah N.M., Wiegel J.;
RT   "Complete sequence of chromosome of Natranaerobius thermophilus JW/NM-WN-
RT   LF.";
RL   Submitted (APR-2008) to the EMBL/GenBank/DDBJ databases.
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CP001034; ACB86316.1; -; Genomic_DNA.
DR   RefSeq; WP_012449150.1; NC_010718.1.
DR   AlphaFoldDB; B2A2U8; -.
DR   SMR; B2A2U8; -.
DR   STRING; 457570.Nther_2766; -.
DR   EnsemblBacteria; ACB86316; ACB86316; Nther_2766.
DR   KEGG; nth:Nther_2766; -.
DR   eggNOG; COG2065; Bacteria.
DR   HOGENOM; CLU_094234_2_1_9; -.
DR   OMA; PIQPDFC; -.
DR   OrthoDB; 1725260at2; -.
DR   Proteomes; UP000001683; 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; Reference proteome; RNA-binding; Transcription;
KW   Transcription regulation; Transcription termination; Transferase.
FT   CHAIN           1..182
FT                   /note="Bifunctional protein PyrR"
FT                   /id="PRO_1000139203"
FT   MOTIF           100..112
FT                   /note="PRPP-binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01219"
SQ   SEQUENCE   182 AA;  20571 MW;  ED611BD1563775B4 CRC64;
     MVQEKAEIMD QEKFNRTLTR ISHEIIEKNK GIDDLVLIGI RTRGVPLAER LAHKIEEIEG
     ESIATGLLDI TLYRDDLSTL SEKPILNKTE VPFSIKNKKV VLVDDVLYTG RTARAALDAV
     IDLGRPKYIQ LAVIVDRGHR ELPIRADYVG KNVPTSKKEL ISVRLSEIDG EDRVMIEETV
     KE