alx 5' UTR
alx expression is controlled by an alkali-responsive riboswitch in the 206 nt 5' UTR (Nechooshtan, 2009).
This 5' UTR has been previously reported in intergenic sRNA searches as psrA14 (psrN), sraF, and tpk1. psrN (EG12731) has been removed as a gene and replaced with this 5'UTR intergene.
Nechooshtan G, Elgrably-Weiss M, Sheaffer A, Westhof E, Altuvia S (2009) A pH-responsive riboregulator. Genes Dev 23:2650-62