Question

The presence of a polyubiquitin chain on a protein targets it for: Transport to extracellular space....

The presence of a polyubiquitin chain on a protein targets it for:

Transport to extracellular space.
Degradation.
Association with membranes.
Assembly into a larger complex.
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Answer #1

Ubiquitin on a protein marks that protein for its degradation. Ubiquitin when gets attached to protein, it deactivates its function and marks the protein to be degraded by actio of proteosomes.

Transport to extracellular space involves packaging of proteins into vesicles by glogi body.

This vesicles receive appropriate signal to release their content wherever the target is dictated. The target can be extra cellular space of binding to membranes.

Chaperones play an important role in the aseembly of proteins into alarger complex.

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