Which of the following enzymes is the starting point of the Ubiquitin- – McqOptions

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1.	Which of the following enzymes is the starting point of the Ubiquitin-conjugating system?
A.	Ubiquitin ligase (E2-E3 complex)
B.	Accessory proteins (E3)
C.	Ubiquitin-conjugating enzyme (E2)
D.	Ubiquitin-activating enzyme (E1)
Answer» E.

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