protein secretory pathway Flashcards
What are the organelles involved in protien secretory pathway
Ribosomes
Rough endoplasmic reticulum/smooth plasmic reticulum
golgi body
vesicle
whats the diffrence between the protiens made in free ribosomes and RER ribosomes?
Free ribos make protiens used for the cell usually
and RER ribos make protiens often exported out of the cell
What is protien secretory pathway
It involved organelles producing, modifying, packing protiens then being exported out of the cell via exocytosis
What is the purpose of the ROUGH endoplasmic reticulum
It sites for the polypetide chain to be correctly folded beofre passing it on to golgi
What is the purpose of tthr transport vesicle?
After protien folded in RER, the transport vesicle which is budded off the RER travels to the golgi apparatus, fusing wit it to realease the protiens.
Protiens need this to prevent from degrading
Purpose of golgi apparatus?
Modifies the protien by adding or removing chemical groups and packages protiens
Which way does protiens come into the golgi aparatus and which way does it go out?
Goes in CIS face goes out Trans face
What is the secreotry vesicle
Transports protiens from golgi body through cytopladm to be fused with the plasma mebrane
What is exocytosis?
It is a type of bulk trnasport using ATP, to realease the protiens out of the cell by fusing the secreotry vesicle with the plasma membrane.