ARNTL2 encodes the human gene, Aryl hydrocarbon receptor nuclear translocator like 2. It may also be known as: Aryl hydrocarbon receptor nuclear translocator-like protein 2; Basic-helix-loop-helix-PAS protein MOP9; Brain and muscle ARNT-like 2; CYCLE-like factor; CLIF; Class E basic helix-loop-helix protein 6; bHLHe6; Member of PAS protein 9; PAS domain-containing protein 9; BMAL2; MOP9; PASD9; aryl hydrocarbon receptor nuclear translocator-like 2. The encoded protein has an amino acid length of 636 and a mass of 70.9 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish.