>4p5k_B mol:protein length:212 RAS peptide,HLA class II histocompatibility antigen, DP beta 1 chain NKFDTQLFHTITGGSLVPRGSGGGGSPENYLFQGRQECYAFNGTQRFLERYIYNREEFV RFDSDVGEFRAVTELGRPDEEYWNSQKDILEEERAVPDRMCRHNYELGGPMTLQRRVQP RVNVSPSKKGPLQHHNLLVCHVTDFYPGSIQVRWFLNGQEETAGVVSTNLIRNGDWTFQ ILVMLEMTPQQGDVYTCQVEHTSLDSPVTVEWKAQ