Predicted mutation
evidence seq id position mutation annotation gene description
RA NC_000913 4,563,778 (G)6→5 coding (148/258 nt) ytiA ← uncharacterized protein YtiA

Read alignment evidence...
  seq id position ref new freq score (cons/poly) reads annotation genes product
*NC_0009134,563,7780G.100.0% 159.9 / NA 34coding (148/258 nt)ytiAuncharacterized protein YtiA
Reads supporting (aligned to +/- strand):  ref base G (0/0);  new base . (20/14);  total (20/14)

AATGGCAAAAAGAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGATGGGTATTTACCGGCATTCGCAGGTGAGATTCCAGCA  >  NC_000913/4563544‑4564028
                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                                          
aaTGGCAAAAAGAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGc                                                                                                                                                                                                                                           <  2:3455/251‑1 (MQ=255)
      aaaaaGAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAAcc                                                                                                                                                                                                                                     >  1:32507/1‑251 (MQ=255)
         aaGAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGc                                                                                                                                                                                                                                  <  2:32507/251‑1 (MQ=255)
           gAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAg                                                                                                                                                                                                                                <  2:99319/251‑1 (MQ=255)
                                       tAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGc                                                                                                                                                                                                    >  2:19023/1‑251 (MQ=255)
                                                       gTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCAt                                                                                                                                                                                    >  2:241935/1‑251 (MQ=255)
                                                       gTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTAATTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCa                                                                                                                                                                                     <  2:226974/250‑1 (MQ=255)
                                                              tAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGct                                                                                                                                                                             >  1:16015/1‑251 (MQ=255)
                                                               aaTCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGctg                                                                                                                                                                            <  1:317835/251‑1 (MQ=255)
                                                                                              agaAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGcc                                                                                                                                             >  1:173901/1‑251 (MQ=255)
                                                                                                aaGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCg                                                                                                                                            >  2:95152/1‑250 (MQ=255)
                                                                                                          aGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGG‑‑ACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTg                                                                                                                                 >  1:274012/1‑250 (MQ=255)
                                                                                                            cGACCTTAATGAATACTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGa                                                                                                                                >  1:258787/1‑250 (MQ=255)
                                                                                                              aCCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTTACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGaaat                                                                                                                             <  1:19023/251‑1 (MQ=255)
                                                                                                              aCCTTAATGAATACTTAACGCGGAGCAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCCCCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGaaat                                                                                                                             >  2:271210/1‑251 (MQ=255)
                                                                                                               ccTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAACAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGaaat                                                                                                                             >  1:301413/1‑250 (MQ=255)
                                                                                                                 ttAATGAATCCTTAACGCGGAGAAACCTCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACAGTGGAGTGaaataa                                                                                                                           >  2:132399/1‑250 (MQ=255)
                                                                                                                          ccTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAAc                                                                                                                 <  1:44284/251‑1 (MQ=255)
                                                                                                                              aaCGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCtt                                                                                                             >  1:188999/1‑251 (MQ=255)
                                                                                                                               aCGCGGAGAATCCCCTTAAGTTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATGGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCAGGGGACAGGTAAGCCAAATGCATAACCCTCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTTACTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCttt                                                                                                            <  2:285812/251‑1 (MQ=255)
                                                                                                                               aCGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCttt                                                                                                            >  1:17615/1‑251 (MQ=255)
                                                                                                                                       aaaCCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCg                                                                                                    <  2:79286/251‑1 (MQ=255)
                                                                                                                                             cGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCt                                                                                              <  2:135347/251‑1 (MQ=255)
                                                                                                                                              gTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATTAAAATAAAAACTCTTTCATCGGCGTGTCCTc                                                                                             >  2:60925/1‑251 (MQ=255)
                                                                                                                                                       aaTGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGa                                                                                    <  1:137970/251‑1 (MQ=255)
                                                                                                                                                                 cAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTCccg                                                                          <  2:245972/251‑1 (MQ=255)
                                                                                                                                                                      acCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCcgcg                                                                     >  1:20754/1‑251 (MQ=255)
                                                                                                                                                                                   cAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGcccg                                                        >  1:43048/1‑249 (MQ=255)
                                                                                                                                                                                         aTTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAACCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCCGCaaaat                                                  >  2:161598/1‑249 (MQ=255)
                                                                                                                                                                                                     agCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGAt                                      >  1:194261/1‑251 (MQ=255)
                                                                                                                                                                                                           gggATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCCAATTGCGCATCAGGGTGGGTAt                                >  1:178386/1‑251 (MQ=255)
                                                                                                                                                                                                             gATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGctgcct                                                                                                                                                                         <  2:122668/112‑1 (MQ=255)
                                                                                                                                                                                                             gATCACCCATTGTATTTCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGctgcct                                                                                                                                                                         >  1:122668/1‑112 (MQ=255)
                                                                                                                                                                                                                             tCCTCGCCGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCCCTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGATGGGTATTTACCGGCATTCGCAgg               <  2:248494/250‑1 (MQ=255)
                                                                                                                                                                                                                                    ccgggggACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGATGGGTATTTACCGGCATTCGCAGGTGAGAtt        <  2:16015/249‑1 (MQ=255)
                                                                                                                                                                                                                                          gACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGATGGGTATTTACCGGCATTCGCAGGTGAGATTCCAGCa  <  1:252573/251‑1 (MQ=255)
                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                                          
AATGGCAAAAAGAATCACAATAATGGAGATGCGTTTACTTAACGAAATACTTTTTGTCACGGTAATCCCTTTAAGGCAAATCAATAAGATATCGAGAAGTATACGTAGCGACCTTAATGAATCCTTAACGCGGAGAAACCCCGTAATGTGCAATGCAGCGCCAGACACCATCCTGCTGGCAATAAATTGACTCAGTCAGCCCAGGGATCACCCATTGTATTTCCTCGCCGGGGGGACAGGTCAGCCAAATGCATAACCCGCAGCCGCCGCGTAAATCACGGGGAATATCGCTGACGCGAAAAGTCATGCCCGCTGCCTGCAACGCTTTGCGGGTTTGTATGACGCCGACCGTGGAGTGAAATAAAAATAAAAACTCTTTCATCGGCGTGTCCTCACTCGTTGACCAATTACCGCCGCGCCAATTGCGCCAGCAAATTGCGCATCAGGATGGGTATTTACCGGCATTCGCAGGTGAGATTCCAGCA  >  NC_000913/4563544‑4564028

Alignment Legend
Aligned base mismatch/match (shaded by quality score): ATCG/ATCG < 3 ≤ ATCG/ATCG < 14 ≤ ATCG/ATCG < 30 ≤ ATCG/ATCG < 37 ≤ ATCG/ATCG < 39 ≤ ATCG/ATCG
Unaligned base: atcg    Masked matching base: atcg    Alignment gap:     Deleted base: