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Cited by 371

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Isolation of timeless by PER Protein Interaction: Defective Interaction Between timeless Protein and Long-Period Mutant PER L

Gekakis, Nicholas, Saez, Lino, Delahaye-Brown, Anne-Marie, Myers, Michael P., Sehgal, Amita, Young, Michael W., Weitz, Charles J.·1995·Science

Abstract

The period ( per ) gene likely encodes a component of the Drosophila circadian clock. Circadian oscillations in the abundance of per messenger RNA and per protein (PER) are thought to arise from negative feedback control of per gene transcription by PER. A recently identified second clock locus, timeless ( tim ), apparently regulates entry of PER into the nucleus. Reported here are the cloning of complementary DNAs derived from the tim gene in a two-hybrid screen for PER-interacting proteins and the demonstration of a physical interaction between the tim protein (TIM) and PER in vitro. A restricted segment of TIM binds directly to a part of the PER dimerization domain PAS. PER L , a mutation that causes a temperature-sensitive lengthening of circadian period and a temperature-sensitive delay in PER nuclear entry, exhibits a temperature-sensitive defect in binding to TIM. These results suggest that the interaction between TIM and PER determines the timing of PER nuclear entry and therefore the duration of part of the circadian cycle.

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Metadata

Authors
Gekakis, N., Saez, L., Delahaye-Brown, A.-M., Myers, M. P., Sehgal, A., Young, M. W., & Weitz, C. J.
Venue
Science
Published
1995-11-03
Volume
270
Issue
5237
Pages
811-815
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2030063045
Cited by
371
References
2
FWCI
13.40
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Isolation of timeless by PER Protein Interaction: Defective Interaction Between timeless Protein and Long-Period Mutant PER L. https://app.cochat.ai/papers/10.1126/science.270.5237.811
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Gekakis, N., Saez, L., Delahaye-Brown, A.-M., Myers, M. P., Sehgal, A., Young, M. W., & Weitz, C. J. (1995). Isolation of timeless by PER Protein Interaction: Defective Interaction Between timeless Protein and Long-Period Mutant PER L. Science. https://doi.org/10.1126/science.270.5237.811

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