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Yes they have DNA ligase, but there are reports about a deficiency in ts activity, recently ubiquitin DNA ligase have benn reported as deficient also
E. Elizabeth Patton has written:
'E3 ubiquitin protein ligase complexes that regulate G1-phase in budding yeast'
example of ligase enzyme
DNA ligase.
Ubiquitin tagging allows the 19S subunit of the 26S proteasome to recognize the potential protein substrate.