Required for normal morphogenesis of adult structures derived from imaginal disks (PubMed:7601355, PubMed:26073018). Plays a role in planar cell polarity and in determining body left-right asymmetry. Expression in segment H1 of the imaginal ring and interaction with Myo31DF are required to induce changes of cell shape and orientation in segment H2, which then gives rise to normal, dextral looping of the adult hindgut (PubMed:26073018). Interacts (via cytoplasmic region) with Myo31DF. Colocalizes with Myo32DF at cell contact sites. Expressed in embryonic ectoderm. In larvae, expression is restricted to imaginal disks and brain. Expressed throughout embryogenesis where it is first detected during gastrulation. Also expressed in larvae and adults. Phosphorylated by fj on Ser/Thr of cadherin domains. RNAi-mediated knockdown in subdomain H1 of the imaginal ring causes loss of H2 cell orientation bias, resulting in aberrant looping of the adult hindgut. Overexpression in segment H1 of the imaginal ring causes aberrant gut looping in about 40% of the cases, but no phenotype is observed when both Myo31DF and ds are overexpressed.