Expression of GrpL is restricted to hematopoietic tissues , and it is distinguished from Grb2 by having a proline -rich region .
expression of grpl is restricted to hematopoietic tissues , and it is distinguished from grb2 by having a proline -rich region .
O O B-protein_molecule O O O B-tissue I-tissue O O O O O O B-protein_molecule O O O B-amino_acid_monomer O O O