Please enable JavaScript.
Coggle requires JavaScript to display documents.
Transports and channels - Coggle Diagram
Transports and channels
-
-
-
port
-
symport
both move the same direction but as the conc. grad are opposite the energy from one is used to transport the other
-
alternate access model by Kabak
a demonstration of the conformation changes using bacterial lactose permease
kinetic characteristics
cis effects
- can be saturated
- stereoisomer specific e.g. D or L
trans effects
- exchange diffusion
- counter transport/antiport
transporters
- specificity
- conformational change
- diffuse single file
- absorbs solute
- can counter transport
channels
- specificity
- conformational change/gated
- can be saturated
saturability
-
real cells will vary due to:
- co-substrates
- multiple substrates
- diffusion + carrier/transporter
-
-
endocytosis
- substances bind
- internalised
- buds to form vesicle
- destroyed by lysosome
exocytosis
- membrane bound vesicles carried to membrane to be released