>1a1n_A mol:protein length:276 HLA class I histocompatibility antigen, BW-53 B*5301 alpha chain GSHSMRYFYTAMSRPGRGEPRFIAVGYVDDTQFVRFDSDAASPRTEPRPPWIEQEGPEY WDRNTQIFKTNTQTYRESLRNLRGYYNQSEAGSHIIQRMYGCDLGPDGRLLRGHDQSAY DGKDYIALNEDLSSWTAADTAAQITQRKWEAARVAEQLRAYLEGLCVEWLRRYLENGKE TLQRADPPKTHVTHHPVSDHEATLRCWALGFYPAEITLTWQRDGEDQTQDTELVETRPA GDRTFQKWAAVVVPSGEEQRYTCHVQHEGLPKPLTLRWEP