Summary of the protein localization, biochemical interactions and barrier formation abilities of Nrx IV and its various mutant forms.

++ and + are comparisons against wild type which is represented as +++.-Represents a phenotype that is observed in nrx IV null alleles.aRepresents punctate localization of Cont in the cytoplasm.bThe genotype of all nrx IVmyc and nrx IVmyc-deletion lines is (arm-GAL4/UAS-nrx IVmyc*;nrx IV−/−).cThe genotype of all nrx IVmyc and nrx IVmyc-deletion lines used for dye injections is (act-GAL4/UAS-nrx IVmyc*;nrx IV−/−).NA-Not applicable