The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Dean Smith, University of Texas Southwestern Medical Center.
TI{TI}Or43b1.w- is a derivative of TI{TI}Or43b1 (FBti0168710). I-Sce1 was likely used to excise the mini-w+ gene leaving behind a single copy of Or43b with an introduced stop codon before the seventh transmembrane domain.