Protein elav; Required for the proper development and maintenance of neurons presumably by affecting RNA metabolism. Belongs to the RRM elav family.

Bruchpilot, isoform J; Bruchpilot (brp) encodes a cytoskeletal protein critical for structural integrity of electron-dense projection (T-bar) at pre-active zones. It contributes to Ca[2+] channel clustering, size regulation of the synaptic vesicle readily releaseable pool and anesthesia-resistant memory formation.

Fasciclin-3; Mediates cell adhesion in a Ca(2+)-independent manner. It plays a role in axon outgrowth, guidance and fasciculation of the developing nervous system.

Semaphorin-1A; Semaphorin 1a (Sema1a) encodes a transmembrane protein belonging to the semaphorin protein family. It is a repulsive axon guidance cue, signaling through direct interactions with the receptor encoded by PlexA, and also functions as a receptor to regulate dendrite targeting and axon guidance. Secreted semaphorins encoded by Sema2a and Sema2b can act as the product of Sema1a ligands.

Neuroglian; The long isoform may play a role in neural and glial cell adhesion in the developing embryo. The short isoform may be a more general cell adhesion molecule involved in other tissues and imaginal disk morphogenesis. Vital for embryonic development. Essential for septate junctions. Septate junctions, which are the equivalent of vertebrates tight junctions, are characterized by regular arrays of transverse structures that span the intermembrane space and form a physical barrier to diffusion. Required for the blood-brain barrier formation.

Microtubule-associated protein futsch; During embryogenesis, necessary for dendritic and axonal organization and growth at the neuromuscular junction through the regulation of the synaptic microtubule cytoskeleton. Microtubule hairpin loops are found within a small subset of synaptic boutons at the neuromuscular synapse, these loops are stabilized by Futsch. Loop morphology and dynamics suggest that rearrangement of these microtubule-based loops is a critical component of the process of bouton division and for subsequent nerve-terminal growth and branching. Translation is repressed by [...]

Glutamate receptor IIA (GluRIIA) encodes a subunit of the muscle glutamate receptor that responds to neurotransmitter at the neuromuscular junction.

Beaten path Ia (beat-Ia) encodes a transmembrane protein and the founding member of the beat family of proteins, which is part of the immunoglobulin superfamily. It is required for the selective defasciculation of motor axons.

Disks large 1 tumor suppressor protein; During embryonic development, some isoforms are essential for proper neuronal differentiation and organization. Required for cell polarity; maintenance of apicobasal polarity. Plays a critical role at septate junctions in cellular growth control during larval development. The presence of a guanylate kinase domain suggests involvement in cellular adhesion as well as signal transduction to control cellular proliferation.