ID   APT_NEOGA               Reviewed;         181 AA.
AC   Q9RQF8;
DT   25-MAR-2003, integrated into UniProtKB/Swiss-Prot.
DT   25-MAR-2003, sequence version 2.
DT   03-AUG-2022, entry version 74.
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}; Synonyms=aprT;
OS   Neorhizobium galegae (Rhizobium galegae).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Neorhizobium.
OX   NCBI_TaxID=399;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=G-179;
RA   Ye R.W., Wang T.;
RT   "Role of fbcFBC gene cluster in denitrification in Rhizobium galegae G-
RT   179.";
RL   Submitted (NOV-1998) to the EMBL/GenBank/DDBJ databases.
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAF14237.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AF109172; AAF14237.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q9RQF8; -.
DR   SMR; Q9RQF8; -.
DR   UniPathway; UPA00588; UER00646.
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; Transferase.
FT   CHAIN           1..181
FT                   /note="Adenine phosphoribosyltransferase"
FT                   /id="PRO_0000149438"
SQ   SEQUENCE   181 AA;  19171 MW;  161974A0FDAA7F91 CRC64;
     MTASTKDILA TAIRSIPDYP KPGIIFRDIT TLLGDAAAFR LAVDELVKPY EGLGVDKIAG
     MEARGFILGG AMAHQLSAGF VPIRKKGKLP YRTVSMAYAL EYGTDEMEIH VDAVKPGEKV
     ILCDDLIATG GTAVGAVKLL RQIGAEVVSA CFVIDLPDLG GRKALEALGV EVRTLAEFSG
     H