Multi Clock Scan

Multi Clock Scan is a comparative approach for monitoring timing signals from multiple biological clocks, helping researchers determine how rhythmic systems coordinate over time. The method collects time-resolved measurements from several clock-controlled signals, aligns them to a common reference, and compares features such as phase, period, and amplitude to identify synchrony or divergence. In biology, these measurements can clarify communication among cellular oscillators, reveal effects of environmental or genetic conditions, and distinguish coordinated rhythms from disrupted timing. Multi Clock Scan therefore supports research on circadian organization, biological timekeeping, disease-related rhythm changes, and interventions designed to restore temporal regulation.

Multi Clock Scan - Related Videos

Research

JoVE Journal - Biology

Clock Scan Protocol for Image Analysis: ImageJ Plugins

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Cited by 16 •

2017

This paper describes two novel ImageJ plugins for 'Clock Scan' image analysis. These plugins expand the functionality of the original visual basic 6 program and, most importantly, make the program available to a large research community by bundling it with the ImageJ free image analysis software package.

Embedding Drosophila Brain in a Matrix for Time-Lapse Imaging of the Circadian Clock Neurons

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2025

Source: Sabado, V., et al., Nagoshi, E. Single-cell Resolution Fluorescence Live Imaging of Drosophila Circadian Clocks in Larval Brain Culture. J. Vis. Exp. (2018). This video demonstrates the procedure to embed the Drosophila brain in a fibrin matrix, followed by time-lapse fluorescence imaging of circadian clock neurons to analyze rhythmic activity synchronized with light/dark cycles.

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters

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Cited by 76 •

2012

Circadian clocks function within individual cells, i.e., they are cell-autonomous. Here, we describe methods for generating cell-autonomous clock models using non-invasive, luciferase-based real-time bioluminescence technology. Reporter cells provide tractable, functional model systems for studying circadian biology.

Research

JoVE Journal - Biology
Free Sample

Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter

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Cited by 18 •

2016

The circadian clock regulates about a third of the Arabidopsis transcriptome, but the percentage of genes that feed back into timekeeping remains unknown. Here we visualize a method to rapidly assess circadian phenotypes in any mutant line of Arabidopsis using luminescent imaging of a circadian reporter transiently expressed in protoplasts.

Education

JoVE Core - Molecular Biology

Leaky Scanning

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2020

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...

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