TY - JOUR
T1 - double-time is a novel Drosophila clock gene that regulates period protein accumulation
AU - Price, Jeffrey L.
AU - Blau, Justin
AU - Rothenfluh, Adrian
AU - Abodeely, Marla
AU - Kloss, Brian
AU - Young, Michael W.
N1 - Funding Information:
We thank Ralf Stanewsky and Jeff Hall for anti-PER, and K. Ranga Rao for anti-PDH antibodies. We also thank Maki Kaneko and Jeff Hall for sharing data prior to publication, Toby Lieber for advice on confocal microscopy, and Lino Saez and Cedric Wesley for invaluable suggestions during this work and comments on the manuscript. J. B. is indebted to Guojun Sheng and Ulrike Gaul for suggesting the collagenase pretreatment of larval brains for immunocytochemistry. J. B. was supported by the Human Frontier Science Program. A. R. was supported by a Beckman fellowship. This work was supported by NIH GM 54339 and the NSF Science and Technology Center for Biological Timing.
PY - 1998/7/10
Y1 - 1998/7/10
N2 - We have isolated three alleles of a novel Drosophila clock gene, double- time (dbt). Short- (dbt(S)) and longperiod (dbt(L)) mutants alter both behavioral rhythmicity and molecular oscillations from previously identified clock genes, period and timeless. A third allele, dbt(P), causes pupal lethality and eliminates circadian cycling of per and tim gene products in larvae. In dbt(P) mutants, PER proteins constitutively accumulate, remain hypophosphorylated, and no longer depend on TIM proteins for their accumulation. We propose that the normal function of DOUBLETIME protein is to reduce the stability and thus the level of accumulation of monomeric PER proteins. This would promote a delay between per/tim transcription and PER/TIM complex function, which is essential for molecular rhythmicity.
AB - We have isolated three alleles of a novel Drosophila clock gene, double- time (dbt). Short- (dbt(S)) and longperiod (dbt(L)) mutants alter both behavioral rhythmicity and molecular oscillations from previously identified clock genes, period and timeless. A third allele, dbt(P), causes pupal lethality and eliminates circadian cycling of per and tim gene products in larvae. In dbt(P) mutants, PER proteins constitutively accumulate, remain hypophosphorylated, and no longer depend on TIM proteins for their accumulation. We propose that the normal function of DOUBLETIME protein is to reduce the stability and thus the level of accumulation of monomeric PER proteins. This would promote a delay between per/tim transcription and PER/TIM complex function, which is essential for molecular rhythmicity.
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U2 - 10.1016/S0092-8674(00)81224-6
DO - 10.1016/S0092-8674(00)81224-6
M3 - Article
C2 - 9674430
AN - SCOPUS:0032503969
SN - 0092-8674
VL - 94
SP - 83
EP - 95
JO - Cell
JF - Cell
IS - 1
ER -