Related Experiment Video

Updated: Jul 30, 2026

Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter
07:42

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

Published on: September 17, 2016

[Mathematical model of stabilization of circadian rhythm in cell energy metabolism]

N V Avseenko, L Ia Lisnichuk, E E Sel'kov

    Biofizika
    |March 1, 1987
    PubMed

    Keywords:
    circadian rhythm regulationcarbohydrate energy metabolismenzyme regulation in glycolysismathematical modeling in biology

    More Related Videos

    Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures06:53

    Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures

    Published on: November 11, 2016

    In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells11:56

    In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells

    Published on: September 28, 2017

    Related Concept Videos

    Positive Regulator Molecules01:45

    Positive Regulator Molecules

    To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
    Biological Clocks and Seasonal Responses02:45

    Biological Clocks and Seasonal Responses

    The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
    Circadian Rhythms and Gene Regulation02:19

    Circadian Rhythms and Gene Regulation

    The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
    Positive Regulator Molecules02:39

    Positive Regulator Molecules

    Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
    Molecular Factors Affecting Cell Division01:27

    Molecular Factors Affecting Cell Division

    Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
    Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
    Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

    Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response

    Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
    The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...