Claim: MCL1 ( The protein MCL1 has a very short biological half-life of only 20–30 minutes, and The loss of MCL1 has a more dramatic impact than the loss of any other anti-apoptotic member of the Bcl-2 family).
Evidence: Induced myeloid leukemia cell differentiation protein Mcl-1 is a protein that in humans is encoded by the MCL1 gene. The protein MCL1 has a very short biological half-life of only 20–30 minutes. The loss of MCL1 has a more dramatic impact than the loss of any other anti-apoptotic member of the Bcl-2 family.