AraR alignment
| araE_1 | -AGATTATTCTAT-----ATTTGTACGTACTAAT-----TAAATGTAATTT--- |
| araE_2_compl | ---TTAAACCTTC-----AATTGTACGTACTTAT-----ATTAAAATTTA---- |
| araR | -TGATATACTGAA-----ATTTGTCCGTATACAT-----TTTGGAGGAATG--- |
| araA_1 | ATTACTATAATAA-----AATTGTTCGTACAAAA-----TATTTATTTATAGGT |
| araA_2 | --ATTTTCCTATC-----ATTAGTACGTATCTTT-----TGTATTTGAAAGCG- |
| xsa_1 | --------TATAA-----ATACATACGTACAAAT-----ATAAAAACAAT---- |
| xsa_2 | ----CCATATTAT-----ATATGTTCGTACATGT-----CAACGAC-------- |
