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Capítulo 13

El transporte de membrana y los transportadores activos

La importancia del transporte de membrana
La importancia del transporte de membrana
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action ...
Transportadores de membrana
Transportadores de membrana
Transporters are essential membrane transport proteins with functions related to cell nutrition, homeostasis, communication, etc. Approximately 7% of all ...
Transporte facilitado
Transporte facilitado
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and ...
Transporte activo primario
Transporte activo primario
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or ...
Bombas impulsadas por ATP I: resumen
Bombas impulsadas por ATP I: resumen
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic ...
Bombas impulsadas por ATP II: bombas tipo P
Bombas impulsadas por ATP II: bombas tipo P
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 ...
Bombas impulsadas por ATP III: bombas tipo V
Bombas impulsadas por ATP III: bombas tipo V
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 ...
Transportadores ABC: Exportadores
Transportadores ABC: Exportadores
ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains ...
Transportadores ABC: Importadores
Transportadores ABC: Importadores
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 ...
Transportadores de glucosa
Transportadores de glucosa
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the ...
Transporte activo secundario
Transporte activo secundario
One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this ...
Transporte transcelular de solutos
Transporte transcelular de solutos
Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is ...
Absorción de glucosa en el intestino delgado
Absorción de glucosa en el intestino delgado
Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form ...
Regulación del pH del estómago
Regulación del pH del estómago
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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