Volume 148, Issue 1, Pages (January 2012)

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Volume 148, Issue 1, Pages 99-111 (January 2012) Forkhead Transcription Factors Establish Origin Timing and Long-Range Clustering in S. cerevisiae  Simon R.V. Knott, Jared M. Peace, A. Zachary Ostrow, Yan Gan, Alexandra E. Rex, Christopher J. Viggiani, Simon Tavaré, Oscar M. Aparicio  Cell  Volume 148, Issue 1, Pages 99-111 (January 2012) DOI: 10.1016/j.cell.2011.12.012 Copyright © 2012 Elsevier Inc. Terms and Conditions

Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 1 Analysis of Early S Phase BrdU Incorporation (A) BrdU incorporation plots of chromosomes III and VI are shown; plot colors and symbols correspond to the strain key above. Origins discussed in the text are boxed. (B) Two-dimensional clustering of peak counts at Fkh-regulated origins is shown; columns (color-keyed above) correspond to strains and rows to origins. (C) All detected origins (in rows) are arranged from maximum to minimum counts in WT, with the positions of Fkh-regulated origins indicated. See also Figure S1, Table S1, and Data S1. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 2 Temporal Analysis of DNA Replication by BrdU Pulse Labeling (A) BrdU incorporation plots of chromosome III and a region of XV are shown. Origins discussed in the text are boxed. (B) The matrix shows differences (WT-fkh1Δfkh2ΔC) in BrdU incorporation (ΔM value) at all Fkh-regulated origins (columns) across time (rows); the origins are arranged from left to right by their differences (WT-fkh1Δfkh2ΔC) in BrdU incorporation in HU (ΔHU Counts). Specific origins are indicated below. See also Figure S2 and Data S2. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 3 Analysis of Fkh1 and Fkh2 Binding Sites near Origins (A) and (B) Frequencies of expected and actual Fkh1 (A) and Fkh2 (B) consensus binding sites near Fkh-activated, Fkh-unregulated, and Fkh-repressed origins are shown. (C) Frequency distribution plots of Fkh1 and Fkh2 consensus binding sites relative to ACS position are shown. (D) M values for BrdU-IP-chip and for ChIP-chip of Fkh1 and ORC binding along the ARS305 region in WT cells harboring ARS305 or ars305Δ2BS. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 4 Transcription Analysis Surrounding Fkh-Regulated Origins in Unsynchronized and G1-Synchronized Cells RNA-Seq (A) and Rpb3 ChIP-Seq (B) read counts of WT, fkh1Δfkh2ΔC, and WT-fkh1Δfkh2ΔC differences (Δ), within 10 kb of each Fkh-regulated origin, are aligned by each origin's predicted or verified ACS. Origins are grouped according to the orientation of the flanking genes, and arranged by differences (WT-fkh1Δfkh2ΔC) in BrdU incorporation in HU (ΔHU Counts). See also Table S2. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 5 Genome-wide Binding of Replication Initiation Factors to Fkh-Regulated Origins (A) M values from ChIP-chip analysis of ORC, Mcm2+4, and Cdc45 at Fkh-regulated origins (in rows) are arranged by differences (WT-fkh1Δfkh2ΔC) in BrdU incorporation in HU (ΔHU Counts). (B) Venn diagram of Cdc45 binding within different origin classes is shown. See also Table S3. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 6 Chromosome-Conformation Capture Analyses of Origin Interactions (A) Two-dimensional clustering of origin-origin interaction frequencies is shown, with origins in columns and rows of the matrix. Columns to the right indicate Cdc45 ChIP-chip binding, average BrdU ΔHU-counts, and ΔBrdU-pulse M values. The top 5% (based on p values) of Fkh-activated and Fkh-repressed origins are indicated. (B) Venn diagram of overlap between experimental replicates is shown. (C) Plots of the ARS607 region including relevant XbaI sites are shown. See also Figure S3 and Table S4. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 7 Co-IP of Fkh1 with ORC Soluble extracts from FKH1-MYC (lanes 1, 3, and 5–8) and untagged (lanes 2 and 4) cells were subjected to IP with anti-Myc antibody (A) and anti-ORC antibody (B) and (C). IPs were analyzed by immunoblotting with anti-Myc and anti-ORC antibodies. (C) Ethidium bromide (EtBr) was included in the IPs at 10, 40, and 100 μg/mL in lanes 6, 7, and 8, respectively. ORC protein was included as standard. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure S1 Related to Figure 1 (A) Suppression of pseudohyphal growth of fkh1Δfkh2Δ cells by expression of Fkh2ΔC. Phase-contrast images of the indicated strains grown in liquid culture and sonicated mildly to disrupt cell aggregates. (B) Origins deregulated in fkh1Δ, fkh1Δfkh2Δ, and fkh1Δfkh2Δ + fkh2ΔC cells. Venn diagrams showing overlap of deregulated origins identified as Fkh-activated and Fkh-repressed. Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure S2 Related to Figure 2 (A) FACScan analysis of DNA content of WT and fkh1Δfkh2ΔC cells synchronized in G1 phase with α–factor and released synchronously into S phase. (B) Two-dimensional gel electrophoresis analysis of ARS305 (Fkh-activated) and ARS1520 (Fkh-repressed) in unsynchronized WT and fkh1Δfkh2ΔC cells. Genomic DNA was digested with NcoI and SalI. (C) Nonrandom distribution of Fkh-regulated origins. Chromosomal positions of Fhk-activated and -repressed origins are plotted. (D) Histogram displaying the frequency of “Cut” counts observed in the 105 simulations as well as the experimentally observed “Cut” count. “Cuts” refers to the number of times a Fkh-activated origin is followed by a Fkh-repressed origin, or vice-versa, given a random distribution (see Experimental Procedures). Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure S3 4C Analysis of ARS305 Interactions, Related to Figure 6 (A) Scheme of the 4C method showing relevant XbaI (X1-X4) and MseI (M1-M4) restriction sites surrounding ARS305 (Bait) and a hypothetical interacting locus (Prey), and primers (P1-P4) used to amplify captured loci for identification by microarray. The tethering agent represents crosslinked protein(s) mediating interaction between the bait and prey. (B) Statistical analysis of ARS305 interacting sites by chromosome showing the expected preference for intrachromosomal interactions (i.e., with chromosome III). The p value is based on the number of observed versus expected interactions for each chromosome (the expected number of interactions is directly proportional to the number of XbaI fragments per individual chromosome). Cell 2012 148, 99-111DOI: (10.1016/j.cell.2011.12.012) Copyright © 2012 Elsevier Inc. Terms and Conditions