The bb′ domains contain a CNX binding site, which is composed of positively charged, highly conserved residues (K214, K274, and R282) that interact with the negatively charged residues of the CNX P domain.
The bb′ domains contain a binding site for CNX, comprising positively charged, highly conserved amino acids (K214, K274, and R282) that interact with the negatively charged residues of the CNX P domain.