Any process that stops, prevents or reduces the frequency, rate or extent of protein K63-linked ubiquitination.
Synonyms:
exact_synonym:
down regulation of protein K63-linked polyubiquitination; downregulation of protein K63-linked polyubiquitination; inhibition of protein K63-linked polyubiquitination; negative regulation of protein K63-linked polyubiquitination
related_synonym:
down regulation of protein K63-linked ubiquitination; downregulation of protein K63-linked ubiquitination; inhibition of protein K63-linked ubiquitination