Multiple choice

Cytosol is the liquid found inside cells. The processing of cytosolic protein involves

  1. transport into late endosomes

  2. proteasome-mediated cleavage

  3. displacement of invariant chain

  4. displacement of beta2-microglobulin

  5. binding to the MHC class II groove
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cytosolic proteins are cleaved to small peptides in the proteasome complex before they are transported by the TAP-1/2 molecules into the endoplasmic reticulum.

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