Golgi Apparatus

ID #1297

In previous postings you have said that sorting only occurs from the trans face, but I have written down that vesicles can bud off in places other than the trans-golgi. Was I incorrect when writting this? If not, where do the vesicles go if they bud off from the stacks?

Since the layers of the stack are independent of each other, to get from one part of the stack to the next, you have to move via a transport vesicle. That's one reason a vesicle might bud off somewhere other than the trans face. Also, there is retrieval of some material back to the ER, and this typically happens from the cis face. The word sorting implies packaging and distribution to the final destination, but cells use vesicles for a wide variety of transport that isn't always directly related to final distribution.

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