NanoTag Nanobody Tools for Drosophila In Vitro and In Vivo Studies

Nanobodies have emerged as powerful protein‐binding tools to uncover protein functions. Using functionalized protein binders, proteins of interest can be visualized, degraded, delocalized, or post‐translationally modified in vivo. We recently reported the use of two short peptide tags, 10‐aa 127D01 and 14‐aa VHH05, and their corresponding nanobodies, Nb127D01 and NbVHH05, for both in vitro and in vivo studies in Drosophila. Here, we provide detailed protocols for nanobody production and for visualization of proteins of interest in either fixed or live samples. In addition, we include protocols for endogenous protein tagging using CRISPR‐mediated genome engineering. © 2022 Wiley Periodicals LLC.