The allele carries a 56-bp deletion in exon 17 of ATP8B that is predicted to produce a frameshift mutation and a truncated product.
The mutant is unresponsive to 1% cVA (11-cis-vaccenyl acetate) and also lacks normal spontaneous action potentials in the absence of cVA. Approximately half of the Or67d-neurons from this line are insensitive to all concentrations of cVA.