関連する実験動画

Updated: Jul 6, 2026

Electroporation of Mycobacteria
11:57

Electroporation of Mycobacteria

Published on: May 23, 2008

カルシウムの侵入は,パラメシウム内のカルシウムチャネルの不活性化につながります

P Brehm, R Eckert

    Science (New York, N.Y.)
    |December 15, 1978
    PubMed
    まとめ

    パラメシウムのカルシウムチャネルは,脱極化時に急速に不活性化します. この無活性化は,カルシウムの侵入によって引き起こされ,ホジキン・ハクスリーモデルで説明されているナトリウムチャネル無活性化とは異なる.

    さらに関連する動画

    Using the Protozoan Paramecium caudatum as a Vehicle for Food-borne Infections in Zebrafish Larvae07:49

    Using the Protozoan Paramecium caudatum as a Vehicle for Food-borne Infections in Zebrafish Larvae

    Published on: January 7, 2019

    Measuring the Effects of Bacteria and Chemicals on the Intestinal Permeability of Caenorhabditis elegans07:23

    Measuring the Effects of Bacteria and Chemicals on the Intestinal Permeability of Caenorhabditis elegans

    Published on: December 3, 2019

    関連する概念動画

    Contact-dependent Signaling01:19

    Contact-dependent Signaling

    Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
    Gap Junctions
    In animal cells, gap junctions are formed...
    Ion Channels01:19

    Ion Channels

    The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
    Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
    Non-gated Ion Channels01:24

    Non-gated Ion Channels

    Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
    Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.
    G-Protein Gated Ion Channels01:21

    G-Protein Gated Ion Channels

    GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
    Sensory organs,...
    Diversity of Protists II01:27

    Diversity of Protists II

    Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
    Giardiasis01:12

    Giardiasis

    Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...