BOP1 encodes the human gene, Block of proliferation 1. It may also be known as: Ribosome biogenesis protein BOP1; Block of proliferation 1 protein. The encoded protein has an amino acid length of 746 and a mass of 83.6 kDa. BOP1 is a member of the WD repeat BOP1/ERB1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Arabidopsis, Zebrafish, Frog, Chicken.