. "\"A protein deubiquitination process in which a K63-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is removed from a lysine residue in histone H2A or the variant H2AX.\" [GOC:mah, PMID:19202061, PMID:19214193]" . . "histone H2A K63-linked deubiquitination" . . .