Background: LIM domain is considered to be important in mediating protein–protein interactions, and members of the LIM protein family can co-regulate tissue-specific gene expression by interacting with different transcription factors. However, its exact function in vivo remains unclear. Our study demonstrates that the LIM protein family member Lmpt may act as a cofactor that interacts with other transcription factors to regulate cellular functions. Methods: In this study, we generated Lmpt knockdown Drosophila (Lmpt-KD) using the UAS-Gal4 syst...