MIB1 (gene)

E3 ubiquitin-protein ligase MIB1 is an enzyme that in humans is encoded by the "MIB1" gene. It is involved in regulating apoptosis.
Confusion with proliferative marker.
An antibody directed at the protein Ki-67, a product of the MKI67 gene, is called "MIB-1". The "MIB1 gene", which regulates apoptosis, should not be confused with the "MIB-1 antibody", which is used to measure Ki-67 expression.