Location of PRC1 complexes relative to annotated loci. (A) Diagrammatic representation of the location of ChIP-sequencing peaks relative to a typical gene and the proportions of the peaks that fall into each category in the BF and Hs68 strains of HFs. (B) Venn diagram showing the number of potential target genes in the two cell types and the overlap between the datasets. (C) Proportions of PRC1 target genes that are actively transcribed in BF and Hs68 cells. ChIP, chromatin immunoprecipitation; HF, human fibroblast.