Peptide sequence: PTAMGSFSSH MTEFPRKRKG SDSDPSQSGI MTEKVVEKLS QNPLTYLLST Sequence homology: Dog: 86%; Human: 100%; Mouse: 77%. This gene encodes a basic helix-loop-helix transcription factor belonging to the PAS (PER, ARNT, SIM) superfamily. The PAS prot