ID   APT_LEPIN               Reviewed;         177 AA.
AC   Q8EXN2;
DT   31-OCT-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   25-MAY-2022, entry version 103.
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=LB_176;
OS   Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai (strain
OS   56601).
OC   Bacteria; Spirochaetes; Leptospirales; Leptospiraceae; Leptospira.
OX   NCBI_TaxID=189518;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=56601;
RX   PubMed=12712204; DOI=10.1038/nature01597;
RA   Ren S.-X., Fu G., Jiang X.-G., Zeng R., Miao Y.-G., Xu H., Zhang Y.-X.,
RA   Xiong H., Lu G., Lu L.-F., Jiang H.-Q., Jia J., Tu Y.-F., Jiang J.-X.,
RA   Gu W.-Y., Zhang Y.-Q., Cai Z., Sheng H.-H., Yin H.-F., Zhang Y., Zhu G.-F.,
RA   Wan M., Huang H.-L., Qian Z., Wang S.-Y., Ma W., Yao Z.-J., Shen Y.,
RA   Qiang B.-Q., Xia Q.-C., Guo X.-K., Danchin A., Saint Girons I.,
RA   Somerville R.L., Wen Y.-M., Shi M.-H., Chen Z., Xu J.-G., Zhao G.-P.;
RT   "Unique physiological and pathogenic features of Leptospira interrogans
RT   revealed by whole-genome sequencing.";
RL   Nature 422:888-893(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; AE010301; AAN51735.1; -; Genomic_DNA.
DR   RefSeq; NP_714720.1; NC_004343.2.
DR   RefSeq; WP_000029425.1; NC_004343.2.
DR   AlphaFoldDB; Q8EXN2; -.
DR   SMR; Q8EXN2; -.
DR   STRING; 189518.LB_176; -.
DR   EnsemblBacteria; AAN51735; AAN51735; LB_176.
DR   GeneID; 61141338; -.
DR   KEGG; lil:LB_176; -.
DR   PATRIC; fig|189518.3.peg.4507; -.
DR   HOGENOM; CLU_063339_3_0_12; -.
DR   InParanoid; Q8EXN2; -.
DR   OMA; KPGIVFR; -.
DR   UniPathway; UPA00588; UER00646.
DR   Proteomes; UP000001408; Chromosome II.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0002055; F:adenine binding; IBA:GO_Central.
DR   GO; GO:0003999; F:adenine phosphoribosyltransferase activity; IBA:GO_Central.
DR   GO; GO:0016208; F:AMP binding; IBA:GO_Central.
DR   GO; GO:0006168; P:adenine salvage; IBA:GO_Central.
DR   GO; GO:0044209; P:AMP salvage; IBA:GO_Central.
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..177
FT                   /note="Adenine phosphoribosyltransferase"
FT                   /id="PRO_0000149402"
SQ   SEQUENCE   177 AA;  19282 MW;  2B09FB86AC0E5378 CRC64;
     MSIVKSKIRT IPDYPKPGIL FRDITSLLLD PEGLALTIGT FVNRYQGKGI TKVAGIEARG
     FLTGAPLAFQ LGVGFIPIRK KGKLPSETVS EEYDLEYGKD VIEVHKDSIQ PGDKILLMDD
     LIATGGTMIA AVKLLKKLGA EIYEAGVIID LPDLGGRKKL QEELKVPVFS ICEFEGH