Human SMARCA5 is continuously required to maintain nucleosome spacing.

ABSTRACT: Genetic models suggested that SMARCA5 was required for DNA-templated events including transcription, DNA replication, and DNA repair. We engineered a degron tag into the endogenous alleles of SMARCA5, a catalytic component of the imitation switch complexes in three different human cell lines to define the effects of rapid degradation of this key regulator. Degradation of SMARCA5 was associated with a rapid increase in global nucleosome repeat length, which may allow greater chromatin compaction. However, there were few changes in nascent transcription within the first 6 h of degradation. Nevertheless, we demonstrated a requirement for SMARCA5 to control nucleosome repeat length at G₁/S and during the S phase. SMARCA5 co-localized with CTCF and H2A.Z, and we found a rapid loss of

SUBMITTER: Bomber ML 

PROVIDER: S-EPMC9974918 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature