CBP20, or Nuclear cap binding protein subunit 2, is a human gene encoded by NCBP2. It may also be known as: Nuclear cap-binding protein subunit 2; 20 kDa nuclear cap-binding protein; Cell proliferation-inducing gene 55 protein; NCBP 20 kDa subunit; NCBP-interacting protein 1; CBC2; PIG55; nuclear cap binding protein subunit 2, 20kDa. The encoded protein has an amino acid length of 156 and a mass of 18.0 kDa. CBP20 is a member of the RRM NCBP2 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.