Preparation and analysis of nuclear protein extract from Drosophila melanogaster embryos for studying transcription factors

Nuclear protein extract is an important substance for studying different molecular systems of the cell, particularly transcription machinery. The paper briefly describes extraction methods and provides a protocol for the preparation of extract from nuclei of Drosophila embryos using salt extraction. The extraction efficiency of transcription factors and chromatin proteins has been checked under different salt concentrations. The paper also provides data about chromatographic properties of some protein factors regulating gene activity.