PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34031364-5 2021 Spermatocytes lacking Mps1 have blocked at the zygotene-to-pachytene transition in the prophase of meiosis I, which may be due to decreased H2B ubiquitination level mediated by MDM2. pachytene 59-68 Ttk protein kinase Mus musculus 22-26