Predicted mutation
evidence seq id position mutation freq annotation gene description
RA NC_000913 603,395 C→G 11.9% intergenic (+60/+21) pheP → / ← ybdG phenylalanine transporter/mechanosensitive channel protein, miniconductance

Read alignment evidence...
  seq id position ref new freq score (cons/poly) reads annotation genes product
*NC_000913603,3950CG11.9% 191.7 / 16.7 59intergenic (+60/+21)pheP/ybdGphenylalanine transporter/mechanosensitive channel protein, miniconductance
Reads supporting (aligned to +/- strand):  ref base C (31/21);  new base G (3/4);  total (34/25)
Fisher's exact test for biased strand distribution p-value = 4.43e-01
Kolmogorov-Smirnov test that lower quality scores support variant p-value = 5.76e-01

CGATGGATGATATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTGAATGCTTTCATA  >  NC_000913/603247‑603541
                                                                                                                                                    |                                                                                                                                                  
cGATGGATGATATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTc                                                                                                                                                    <  3:527257/149‑1 (MQ=255)
   tggatgATATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGAt                                                                                                                                                 <  4:243442/149‑1 (MQ=255)
   tggatgATATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGAt                                                                                                                                                 <  1:558131/149‑1 (MQ=255)
     gatgatATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATga                                                                                                                                               >  1:515345/1‑149 (MQ=255)
       tgatATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCGAATGGATgaga                                                                                                                                             <  3:191644/149‑1 (MQ=255)
       tgatATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATgaga                                                                                                                                             >  4:581354/1‑149 (MQ=255)
       tgatATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATgaga                                                                                                                                             <  4:464690/149‑1 (MQ=255)
        gatATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACAATGTCAACCATCCGAAACCGCTCTCATCGAATGGATGagag                                                                                                                                            <  4:217757/149‑1 (MQ=255)
         atatGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCGAATGGATGAGAGc                                                                                                                                           <  4:177741/149‑1 (MQ=255)
           atGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCgg                                                                                                                                         >  2:73863/1‑149 (MQ=255)
           atGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCgg                                                                                                                                         <  2:200894/149‑1 (MQ=255)
             gcgcTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGtt                                                                                                                                       >  1:55057/1‑149 (MQ=255)
                    tCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTaa                                                                                                                                >  1:123090/1‑149 (MQ=255)
                      aGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAAt                                                                                                                               >  4:176695/1‑148 (MQ=255)
                      aGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAAt                                                                                                                               <  3:176695/148‑1 (MQ=255)
                         gATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACt                                                                                                                           <  2:461338/149‑1 (MQ=255)
                               gctgcCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTaa                                                                                                                     >  1:597587/1‑149 (MQ=255)
                                 tgcCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAAt                                                                                                                   >  3:393101/1‑149 (MQ=255)
                                 tgcCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAAt                                                                                                                   <  1:425949/149‑1 (MQ=255)
                                     ggTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCAc                                                                                                               <  4:520895/149‑1 (MQ=255)
                                          ggATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGcc                                                                                                          <  1:304868/149‑1 (MQ=255)
                                           gATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCa                                                                                                         >  4:420917/1‑149 (MQ=255)
                                                 aTTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGc                                                                                                   >  3:207724/1‑149 (MQ=255)
                                                  ttCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCGATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCg                                                                                                  >  1:103759/1‑149 (MQ=255)
                                                  ttCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCg                                                                                                  <  2:597587/149‑1 (MQ=255)
                                                     cTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAat                                                                                               >  1:531015/1‑149 (MQ=255)
                                                     cTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAat                                                                                               >  1:245925/1‑149 (MQ=255)
                                                     cTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAat                                                                                               >  2:442425/1‑149 (MQ=255)
                                                     cTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAat                                                                                               <  1:442425/149‑1 (MQ=255)
                                                      tGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAata                                                                                              >  2:460398/1‑149 (MQ=255)
                                                        tttATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATc                                                                                            >  1:151696/1‑149 (MQ=255)
                                                              gCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCGAATGGATgaga                                                                                                                                             <  1:141099/94‑1 (MQ=255)
                                                              gCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCGAATGGATgaga                                                                                                                                             >  2:141099/1‑94 (MQ=255)
                                                                               tCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGaa                                                                     <  3:581354/149‑1 (MQ=255)
                                                                               tCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGaa                                                                     <  1:353171/149‑1 (MQ=255)
                                                                                 ggAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGt                                                                   >  2:92498/1‑149 (MQ=255)
                                                                                  gAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTc                                                                  >  3:157383/1‑149 (MQ=255)
                                                                                  gAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTc                                                                  <  2:515345/149‑1 (MQ=255)
                                                                                    aaTAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGc                                                                <  2:60305/149‑1 (MQ=255)
                                                                                    aaTAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGAGGAAGTCGc                                                                >  2:109952/1‑149 (MQ=255)
                                                                                       aaGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAata                                                                                              >  2:43010/1‑116 (MQ=255)
                                                                                       aaGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAata                                                                                              <  1:43010/116‑1 (MQ=255)
                                                                                       aaGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGa                                                             >  4:580395/1‑149 (MQ=255)
                                                                                                  gCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTc                                                  <  2:123090/149‑1 (MQ=255)
                                                                                                       aTCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACaa                                             <  4:157383/149‑1 (MQ=255)
                                                                                                              aaaaCGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCaaa                                      >  3:95202/1‑149 (MQ=255)
                                                                                                                 aCGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTc                                                  >  2:484376/1‑134 (MQ=255)
                                                                                                                 aCGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTc                                                  <  1:484376/134‑1 (MQ=255)
                                                                                                                           ccATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAat                         >  3:94067/1‑149 (MQ=255)
                                                                                                                            cATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGaa                                                                     >  2:132135/1‑104 (MQ=255)
                                                                                                                            cATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGaa                                                                     <  1:132135/104‑1 (MQ=255)
                                                                                                                             taaaaaaaCCGCTCTCATCGAATGGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAatat                       >  1:36511/6‑149 (MQ=39)
                                                                                                                               ccGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAatatat                     <  3:420917/149‑1 (MQ=255)
                                                                                                                                  aaaCCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGGGATCGAATATATCAg                  >  2:579048/1‑149 (MQ=255)
                                                                                                                                     ccGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCt               >  4:356251/1‑149 (MQ=255)
                                                                                                                                     ccGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCt               >  3:148240/1‑149 (MQ=255)
                                                                                                                                      cGCTCTCATCGAATGGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTg              >  4:570195/1‑149 (MQ=255)
                                                                                                                                         tctcATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTGAAt           >  3:117519/1‑149 (MQ=255)
                                                                                                                                           tcATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTGAATGc         >  3:327285/1‑149 (MQ=255)
                                                                                                                                                  ttCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTGAATGCTTTCata  >  2:126864/1‑149 (MQ=255)
                                                                                                                                                    |                                                                                                                                                  
CGATGGATGATATGCGCTTGTCAGCGATCCTGCTGCCGGTGTGGATTGTATTCCTGTTTATGGCATTTAAAACGCTGCGTCGGAAATAAGGCATTCACGCTACATCCGACAAAACGATGTCAACCATCCGAAACCGCTCTCATCCATTCGATGAGAGCGGTTTTTTTAATTACTGCTTAAATGCACCCGCCAGAGAGCGAATATCATTGCCGGTTGGCGACTGATGAAGTCGCAGACCAAACTCTTCGACAATCGCAAATATGTGATCGAATATATCAGCCTGAATGCTTTCATA  >  NC_000913/603247‑603541

Alignment Legend
Aligned base mismatch/match (shaded by quality score): ATCG/ATCG < 3 ≤ ATCG/ATCG < 27 ≤ ATCG/ATCG < 34 ≤ ATCG/ATCG < 39 ≤ ATCG/ATCG < 40 ≤ ATCG/ATCG
Unaligned base: atcg    Masked matching base: atcg    Alignment gap:     Deleted base: