Table 5.

Proteins involved in transfer of ubiquitin or ubiquitin-like polypeptidesa

Ubiquitin-like polypeptideProtein involved in transferRelevant target(s)
E1E2E3
UbiquitinUba1Cdc34, Rad6, and up to 9 othersSCF, APCCyclins, Sic1, Far1, Cdc6
Smt3Aos1-Uba2Ubc9??
Rub1Ula1-Uba3Ubc12?Cdc53
  • a See Table 1 for references.