Abstract: E2-
S23A (
E2 with
serine 23 mutated to alanine) activates and represses transcription identically to
E2-WT (wild-type
E2), and
E2-
S23A is as efficient as
E2-WT in transient replication assays.
Abstract: However,
E2-
S23A has compromised interaction with mitotic chromatin compared with
E2-WT.
Abstract: In
E2-
S23A cells, neither
E2 nor TopBP1 levels increase during mitosis.