Bub3 Antibody

Budding uninhibited by benzimidazoles 3 is a protein that in humans is encoded by the BUB3 gene. It is a protein involved with the regulation of the Spindle Assembly Checkpoint (SAC); though Bub3 is non-essential in yeast, it is essential in higher eukaryotes. As one of the checkpoint proteins, it delays the irreversible onset of anaphase through direction of kinetochore localization during prometaphase to achieve biorentation. Bub3 directs the localization of Bub1 at the kinetochore in order to activate the SAC. It also acts as a regulator in that it affects binding of Mad3 to Mad2.