Jak3 is constitutively associated with CD40 , and this interaction requires a proline-rich sequence in the membrane-proximal region of CD40 .
jak3 is constitutively associated with cd40 , and this interaction requires a proline-rich sequence in the membrane-proximal region of cd40 .
B-protein_molecule O O O O B-protein_molecule O O O O O O B-protein_domain_or_region I-protein_domain_or_region O O B-protein_domain_or_region I-protein_domain_or_region O B-protein_molecule O