>1FBZ_1|Chains A, B|PROTO-ONCOGENE TYROSINE-PROTEIN KINASE LCK|Homo sapiens (9606) EPEPWFFKNLSRKDAERQLLAPGNTHGSFLIRESESTAGSFCLSVRDFDQNQGEVVKHYKIRNLDNGGFYISPRITFPGLHELVRHYTNASDGLCTRLSRPCQT