ID   APT_ENTFA               Reviewed;         170 AA.
AC   Q834G6;
DT   31-OCT-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 97.
DE   RecName: Full=Adenine phosphoribosyltransferase {ECO:0000255|HAMAP-Rule:MF_00004};
DE            Short=APRT {ECO:0000255|HAMAP-Rule:MF_00004};
DE            EC=2.4.2.7 {ECO:0000255|HAMAP-Rule:MF_00004};
GN   Name=apt {ECO:0000255|HAMAP-Rule:MF_00004}; OrderedLocusNames=EF_1687;
OS   Enterococcus faecalis (strain ATCC 700802 / V583).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Enterococcaceae;
OC   Enterococcus.
OX   NCBI_TaxID=226185;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700802 / V583;
RX   PubMed=12663927; DOI=10.1126/science.1080613;
RA   Paulsen I.T., Banerjei L., Myers G.S.A., Nelson K.E., Seshadri R.,
RA   Read T.D., Fouts D.E., Eisen J.A., Gill S.R., Heidelberg J.F., Tettelin H.,
RA   Dodson R.J., Umayam L.A., Brinkac L.M., Beanan M.J., Daugherty S.C.,
RA   DeBoy R.T., Durkin S.A., Kolonay J.F., Madupu R., Nelson W.C.,
RA   Vamathevan J.J., Tran B., Upton J., Hansen T., Shetty J., Khouri H.M.,
RA   Utterback T.R., Radune D., Ketchum K.A., Dougherty B.A., Fraser C.M.;
RT   "Role of mobile DNA in the evolution of vancomycin-resistant Enterococcus
RT   faecalis.";
RL   Science 299:2071-2074(2003).
CC   -!- FUNCTION: Catalyzes a salvage reaction resulting in the formation of
CC       AMP, that is energically less costly than de novo synthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00004}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=AMP + diphosphate = 5-phospho-alpha-D-ribose 1-diphosphate +
CC         adenine; Xref=Rhea:RHEA:16609, ChEBI:CHEBI:16708, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:58017, ChEBI:CHEBI:456215; EC=2.4.2.7;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00004};
CC   -!- PATHWAY: Purine metabolism; AMP biosynthesis via salvage pathway; AMP
CC       from adenine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00004}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00004}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00004}.
CC   -!- SIMILARITY: Belongs to the purine/pyrimidine phosphoribosyltransferase
CC       family. {ECO:0000255|HAMAP-Rule:MF_00004}.
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DR   EMBL; AE016830; AAO81465.1; -; Genomic_DNA.
DR   RefSeq; NP_815395.1; NC_004668.1.
DR   RefSeq; WP_002357441.1; NZ_KE136528.1.
DR   AlphaFoldDB; Q834G6; -.
DR   SMR; Q834G6; -.
DR   STRING; 226185.EF_1687; -.
DR   EnsemblBacteria; AAO81465; AAO81465; EF_1687.
DR   GeneID; 60893985; -.
DR   KEGG; efa:EF1687; -.
DR   PATRIC; fig|226185.45.peg.1823; -.
DR   eggNOG; COG0503; Bacteria.
DR   HOGENOM; CLU_063339_3_0_9; -.
DR   OMA; KPGIVFR; -.
DR   UniPathway; UPA00588; UER00646.
DR   Proteomes; UP000001415; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003999; F:adenine phosphoribosyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006168; P:adenine salvage; IEA:UniProtKB-UniRule.
DR   GO; GO:0044209; P:AMP salvage; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006166; P:purine ribonucleoside salvage; IEA:UniProtKB-KW.
DR   CDD; cd06223; PRTases_typeI; 1.
DR   Gene3D; 3.40.50.2020; -; 1.
DR   HAMAP; MF_00004; Aden_phosphoribosyltr; 1.
DR   InterPro; IPR005764; Ade_phspho_trans.
DR   InterPro; IPR000836; PRibTrfase_dom.
DR   InterPro; IPR029057; PRTase-like.
DR   Pfam; PF00156; Pribosyltran; 1.
DR   SUPFAM; SSF53271; SSF53271; 1.
DR   TIGRFAMs; TIGR01090; apt; 1.
DR   PROSITE; PS00103; PUR_PYR_PR_TRANSFER; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Glycosyltransferase; Purine salvage; Reference proteome;
KW   Transferase.
FT   CHAIN           1..170
FT                   /note="Adenine phosphoribosyltransferase"
FT                   /id="PRO_0000149382"
SQ   SEQUENCE   170 AA;  18773 MW;  CEF1A1D432E81AB6 CRC64;
     MDLRDYIASI PDYPEKGIVF RDISPLMANG DAYREATKQI VDYAKEKRID MVVGPEARGF
     IVGCPVAYEL GVGFAPVRKK GKLPRETIEV TYDLEYGSDT LTLHKDAITP GQRVLICDDL
     LATGGTIKAT IELVEQLGGI VVGCAFLIEL MDLHGRDKID GYDIVTLMEY