Abstract 172, Vol. Vol 79, No.
Pineal melatonin is produced during the night.
Its nocturnal increase regulates circadian rhythms and the photoperiodic reproductive response. Recently, SNAT has been cloned in the rat. In addition, using molecular linkage analysis with interspecific backcross mice, a gene encoding SNAT was mapped on a mouse chromosome. The molecular linkage analysis demonstrated that the gene encoding SNAT maps 1.5 cM distal to D11Mit11. These chromosomal locations are in a region of conserved linkage homology between the two species.