{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["16(1)"],"submitter":["Xu C"],"pubmed_abstract":["Integrator-PP2A (INTAC) is a highly modular complex orchestrating the transition of paused RNA polymerase II into productive elongation or promoter-proximal premature termination, with its loss resulting in transcription dysregulation and genome instability. Here, we identify human DSS1-a flexible 70-residue protein found in multiple functionally diverse complexes including the 26S proteasome-as an integral subunit of the INTAC backbone. Structural analysis of DSS1-INTAC, both alone and in association with paused polymerase, demonstrates intimate interactions between DSS1 and the INTAC backbone. We identify tryptophan 39 of DSS1 as being critical for interacting with INTAC and find that its mutation disrupts DSS1's interaction with INTAC, while maintaining DSS1's interaction with the prote"],"journal":["Nature communications"],"pagination":["6206"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12228764"],"repository":["biostudies-literature"],"pubmed_title":["DSS1 is required for proper Integrator-PP2A function."],"pmcid":["PMC12228764"],"pubmed_authors":["Xiong Y","Zhang YJ","Zheng H","Zhao WY","Huang Z","Song A","Xu C","Zhou QX","Xu TT","Xu Y","Cheng J","Chen FX"],"additional_accession":[]},"is_claimable":false,"name":"DSS1 is required for proper Integrator-PP2A function.","description":"Integrator-PP2A (INTAC) is a highly modular complex orchestrating the transition of paused RNA polymerase II into productive elongation or promoter-proximal premature termination, with its loss resulting in transcription dysregulation and genome instability. Here, we identify human DSS1-a flexible 70-residue protein found in multiple functionally diverse complexes including the 26S proteasome-as an integral subunit of the INTAC backbone. Structural analysis of DSS1-INTAC, both alone and in association with paused polymerase, demonstrates intimate interactions between DSS1 and the INTAC backbone. We identify tryptophan 39 of DSS1 as being critical for interacting with INTAC and find that its mutation disrupts DSS1's interaction with INTAC, while maintaining DSS1's interaction with the prote","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Jul","modification":"2026-07-15T10:56:12.965Z","creation":"2026-07-03T03:14:41.085Z"},"accession":"S-EPMC12228764","cross_references":{"pubmed":["40617815"],"doi":["10.1038/s41467-025-61257-4"]}}