BIO 320 EXAM 2

(LECTURES 10-18)

proteins sorted to each organelle how? -

CORRECT REPLY>>>>>>

 specialized membrane

ribosomes in cytosol -translate proteins -exception: some mt proteins

transport across membrane of whatever organelle -signal in protein

[sequence of aa] -receptor for that signal --receptor brings protein to correct membrane -translocation machinery -energy for transfer

what if no targeting signals? -remain in cytosol