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膜とは何か
A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved…
膜の流動性
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules…
流動モザイクモデル
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of…
電気化学的勾配とは何か
Adenosine triphosphate, or ATP, is considered the primary energy source in cells. However, energy can also be stored in the electrochemical gradient…
拡散
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances,…
浸透
Approximately 60% to 95% of the weight of living organisms is attributed to water. Therefore, maintaining appropriate water balance within cells is…
動物における張度
The tonicity of a solution determines if a cell gains or loses water in that solution. The tonicity depends on the permeability of the cell membrane…
植物における張度
Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity…
蛋白質会合
The cell membrane—or plasma membrane—is an ever-changing landscape. It is described as a fluid mosaic as various macromolecules are embedded in…
促進輸送
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and…
一次性能動輸送
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or…
二次性能動輸送
One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this…
受容体介在型エンドサイトーシス
Receptor-mediated endocytosis is a process through which bulk amounts of specific molecules can be imported into a cell after binding to cell…
飲作用
Cells use energy-requiring bulk transport mechanisms to transfer large particles, or large amounts of small particles, into or out of the cell. The…
食作用
Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis (“cellular…
エキソサイトーシス
Exocytosis is used to release material from cells. Like other bulk transport mechanisms, exocytosis requires energy. While endocytosis takes…
蛍光相関分光法により測定初代リンパ球のプラズマ膜における分子拡散
Fluorescence correlation spectroscopy (FCS) is a powerful technique for studying the diffusion of molecules within biological membranes with high…
セルベースの​​L-グルタチオン保護アッセイ細胞膜タンパク質のエンドサイトーシスとリサイクルを研究するために、
Membrane trafficking involves transport of proteins from the plasma membrane to the cell interior (i.e. endocytosis) followed by trafficking to…
誘発、自発的、およびミニチュアシナプス活動中に、FM色素を用いたシナプス小胞のリサイクルの検討
Synaptic vesicles in functional nerve terminals undergo exocytosis and endocytosis. This synaptic vesicle recycling can be effectively analyzed using…

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