ZFIN Image: Hickey et al., 2022, Figure 1

Image

Figure Caption

Figure 1

Polycomb repressive complex 1 (PRC1) occupancy and activity precedes H3K27me3 establishment at promoters.

(A) Detection of H2Aub1 and histone H3 (control) by western blot, prior to (2.5 hr post fertilization [hpf]), during (3.5 hpf), following (4.3 hpf) zygotic genome activation (ZGA), and 24 hpf. (B) Nuclear H2Aub1 immunofluorescence in zebrafish sperm, oocytes (egg), and embryos prior to (2.5 hpf), during (3.5 hpf), and following (4.3 hpf) ZGA. Dashed square: field of view in upper panels. (C) K-means clustering of DNA methylation (DNAme) and chromatin immunoprecipitation (ChIP)-seq (histone modifications/variant) at promoters (UCSC refseq). For DNAme, red color indicates regions that lack DNAme. (D) Genome browser screenshots of ChIP-seq enrichment at representative genes from the clusters in panel (C). (E) Transcription factor motif enrichment from HOMER (Heinz et al., 2010) at promoter clusters from (C).

Acknowledgments

This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ Elife