Amino acid replacement: G21E.
Expression of Hsap\ARQ65.G21E.Scer\UAS in the larval salivary gland under the control of Scer\GAL4fkh.PH in the presence of dihydrotestosterone results in a dramatic reduction in salivary gland size. Larvae expressing Hsap\ARQ65.G21E.Scer\UAS in motorneurons under the control of Scer\GAL4D42 exhibit defects in locomotor ability (as measured by larval crawling assay), indicating a significant functional deficit. In addition, the number of type 1B boutons at the larval neuromuscular junction is significantly decreased in a dihydrotestosterone-dependent manner when Hsap\ARQ65.G21E.Scer\UAS is expressed using the motor neuron driver Scer\GAL4VGlut-OK371.
Expression of Hsap\ARQ65.G21E.Scer\UAS in all neurons under the control of Scer\GAL4elav-C155 in the presence of dihydrotestosterone results in early lethality.