Peptide sequence: DATLFCEPWT LNMQPAPLTS EEFKHVGLTA AVLSAHTQKE EQNYVDKFRE Sequence homology: Dog: 100%; Horse: 100%; Human: 100%; Mouse: 93%; Pig: 86%; Rat: 93%; Sheep: 86%; Zebrafish: 79%. This gene is a member of the Period family of genes and is expres