>2xn9_E mol:protein length:190 MAJOR HISTOCOMPATIBILITY COMPLEX CLASS II BETA CHAIN GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAE YWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCS VSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEH PSVTSPLTVEWRA