S. Pinto et al., latheo encodes a subunit of the origin recognition complex and disrupts neuronal proliferation and adult olfactory memory when mutant, NEURON, 23(1), 1999, pp. 45-54
The Drosophila latheo (lat) gene was identified in a behavioral screen for
olfactory memory mutants. The original hypomorphic lat(P1) mutant (Boynton
and Tully, 1992) shows a structural defect in adult brain. Homozygous letha
l lat mutants lack imaginal discs, show little cell proliferation in the CN
S of third instar larvae, and die as early pupae. lat(P1) was cloned, and a
ll of the above mentioned defects of hypomorphic or homozygous lethal lat m
utants were rescued with a lat(+) transgene. lat encodes a novel protein wi
th homology to a subunit of the origin recognition complex (ORC). Human and
Drosophila LAT both associate with ORC2 and are related to yeast ORC3, sug
gesting that LAT functions in DNA replication during cell proliferation.