>tr|A6KU18|A6KU18_RAT Casein delta OS=Rattus norvegicus GN=Csn1s2b MKFIILTCLLAVALAKQESKDNSQEDFKQTVDVVIFPGQETVKNIPIPQMESVEAPIKNK CYQSIQTFKPPQALKGLYQYHMAKNPWGYTVNRAFPSTRTLQYNQKTMDLSMRAREKIVM SEIKKNIQDYVTKMKQYSKITWPRFVKSLQQYQKTMNPWSCYPYTLLQV