PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 29850896-4 2018 Here, we show that the CK2 kinase phosphorylates MUS81 at Serine 87 in late-G2/mitosis, and upon mild replication stress. Serine 58-64 MUS81 structure-specific endonuclease subunit Homo sapiens 49-54 29850896-6 2018 In line with a role in mitosis, phosphorylation at Serine 87 is suppressed in S-phase and is mainly detected in the MUS81 molecules associated with EME1. Serine 51-57 MUS81 structure-specific endonuclease subunit Homo sapiens 116-121