JoVE Logo

Entrar

Capítulo 13

Transporte por Membrana e Transportadores Ativos

A Importância do Transporte de Membrana
A Importância do 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 Membranas
Transportadores de Membranas
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 Ativo Primário
Transporte Ativo Primário
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or ...
Bombas Acionadas por ATP - I: Uma Visão Geral
Bombas Acionadas por ATP - I: Uma Visão Geral
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 Acionadas por ATP II : Bombas do tipo P
Bombas Acionadas por ATP II : Bombas do 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 Acionadas por ATP III : Bombas do tipo V
Bombas Acionadas por ATP III : Bombas do 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 : Exportador
Transportadores ABC : Exportador
ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains ...
Transportadores ABC : Importador
Transportadores ABC : Importador
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 Glicose
Transportadores de Glicose
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the ...
Transporte Ativo Secundário
Transporte Ativo Secundário
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 ...
Absorção de Glicose no Intestino Delgado
Absorção de Glicose no 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 ...
Regulação do pH no Estômago
Regulação do pH no Estômago
The human body carefully regulates the internal pH of different organs to maintain homeostasis. For example, while the blood plasma maintains a neutral pH ...
JoVE Logo

Privacidade

Termos de uso

Políticas

Pesquisa

Educação

SOBRE A JoVE

Copyright © 2025 MyJoVE Corporation. Todos os direitos reservados