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Kapitel 13

Membrantransport und aktive Transporter

Die Bedeutung des Membrantransports
Die Bedeutung des Membrantransports
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action ...
Membrantransporter
Membrantransporter
Transporters are essential membrane transport proteins with functions related to cell nutrition, homeostasis, communication, etc. Approximately 7% of all ...
Erleichterter Transport
Erleichterter Transport
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and ...
Primärer aktiver Transport
Primärer aktiver Transport
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or ...
ATP-getriebene Pumpen I: Ein Überblick
ATP-getriebene Pumpen I: Ein Überblick
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic ...
ATP-getriebene Pumpen II: P-Typ-Pumpen
ATP-getriebene Pumpen II: P-Typ-Pumpen
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from ...
ATP-getriebene Pumpen III: V-Pumpen
ATP-getriebene Pumpen III: V-Pumpen
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of ...
ABC Transporter: Exporter
ABC Transporter: Exporter
ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains ...
ABC-Transporter: Importer
ABC-Transporter: Importer
ATP-binding cassette or ABC transporters are a class of ATP-driven pumps that hydrolyze ATP to move solutes across the membrane. They can be grouped into ...
Glukose Transporter
Glukose Transporter
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the ...
Sekundärer aktiver Transport
Sekundärer aktiver Transport
One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this ...
Transzellulärer Transport von gelösten Stoffen
Transzellulärer Transport von gelösten Stoffen
Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is ...
Glukoseabsorption im Dünndarm
Glukoseabsorption im Dünndarm
Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form ...
pH-Regulierung im Magen
pH-Regulierung im Magen
The human body carefully regulates the internal pH of different organs to maintain homeostasis. For example, while the blood plasma maintains a neutral pH ...
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