Aryl hydrocarbon receptor nuclear translocator-like 2, also known as Mop9, Bmal2, CLIF,, or ARNTL2, is a gene

Gene

A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...

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Arntl2 is a mammalian paralog (with ARNTL

ARNTL

Aryl hydrocarbon receptor nuclear translocator-like, also known as ARNTL, Bmal1, or Mop3, is a gene which is associated with susceptibility to hypertension and type 2 diabetes.-Function:...

) of the Drosophila Cycle gene. Homologs were isolated in fish, birds and mammals such as mice and humans. Based on phylogenetic analyses, it was proposed that Arntl2 arose from duplication of the Arntl gene early in the vertebrate lineage, followed by rapid divergence of the Arntl gene copy.