>1py4_D mol:protein length:100 Beta-2-microglobulin precursorMIQRTPKIQVYSRHPAENGKSNFLNCYVSGFYPSDIEVDLLKNGERIEKVEHSDLSFSKDWSFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM