This ENU-induced mutation was isolated in a screen at the University of Pittsburgh. It is a subline of b2b2966Clo. The molecular lesion for this subline is a T to A substitution at coding nucleotide 333 of the cDNA (c.333T>A, NM_001081171). This changes the cysteine residue to a translation stop at position 111 of the encoded protein (p.C111*).