A unique circadian-rhythm photoreceptor
Article Abstract:
A mutation in a cryptochrome (dCRY) from the Drosophila fruitfly is found to block arrhythmicity under constant light conditions. It is concluded that dCRY is a photoreceptor for circadian rhythms.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
Coupled oscillators control morning and evening locomotor behaviour of Drosophila
Article Abstract:
The timing of morning and evening activity in Drosophila derives from two distinct groups of circadian neurons: Morning activity from the ventral lateral neurons that express the neuropeptide PDF, and evening activity from another group of cells, including the dorsal lateral neurons. Although the two oscillators can function autonomously, cell-specific rescue experiments with circadian clock mutants indicate that they are functionally coupled.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
A light-entrainment mechanism for the Drosophila circadian clock
Article Abstract:
Drosophila timeless protein (Tim) and period protein (Per) are heterodimeric partners in fly head extracts. This Per-Tim heterodimeric complex, which is under clock control, explains the reciprocal autoregulation of the proteins on transcription. A number of the circadian features of the Tim cycle resemble those of the Per cycle. However, their cycling curves show that Tim rapidly decreases during late night/early morning, releasing Per from the complex. Tim and/or the Tim-Per heterodimeric complex are more direct light-sensitive targets of the Drosophila clock.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Effects of summer hunting on ranging behavior of adult raccoons in central Mississippi. Space use and multi-scale habitat selection of adult raccoons in central Mississippi
- Abstracts: Role of thrombin signalling in platelets in haemostasis and thrombosis. PAR3 is a cofactor for PAR4 activation by thrombin
- Abstracts: AFX-like Forkhead transcription factors mediate cell-cycle regulation by Ras and PKB through p27kip1. Forkhead transcription factors contribute to execution of the mitotic programme in mammals