SRX2228730 GSM2339521 SRP090985 SRS1732981 GSM2339521 RNA-Seq TRANSCRIPTOMIC cDNA Total RNA was extracted and DNase-I treated using a spin column-based RNA purification kit (Macherey-Nagel). cDNA was prepared with SuperScript II reverse transcriptase (Invitrogen). Truseq Stranded RNA Illumina HiSeq 2500 gds 302339521 GEO Accession GSM2339521 SRX2228731 GSM2339522 SRP090985 SRS1732982 GSM2339522 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339522 GEO Accession GSM2339522 SRX2228732 GSM2339523 SRP090985 SRS1732983 GSM2339523 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339523 GEO Accession GSM2339523 SRX2228733 GSM2339524 SRP090985 SRS1732984 GSM2339524 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339524 GEO Accession GSM2339524 SRX2228734 GSM2339525 SRP090985 SRS1732985 GSM2339525 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339525 GEO Accession GSM2339525 SRX2228735 GSM2339526 SRP090985 SRS1732986 GSM2339526 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339526 GEO Accession GSM2339526 SRX2228736 GSM2339527 SRP090985 SRS1732987 GSM2339527 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339527 GEO Accession GSM2339527 SRX2228737 GSM2339528 SRP090985 SRS1732988 GSM2339528 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339528 GEO Accession GSM2339528 SRX2228738 GSM2339529 SRP090985 SRS1732989 GSM2339529 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339529 GEO Accession GSM2339529 SRX2228739 GSM2339530 SRP090985 SRS1732990 GSM2339530 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339530 GEO Accession GSM2339530 SRX2228740 GSM2339531 SRP090985 SRS1732991 GSM2339531 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339531 GEO Accession GSM2339531 SRX2228741 GSM2339532 SRP090985 SRS1732992 GSM2339532 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339532 GEO Accession GSM2339532 SRX2228742 GSM2339533 SRP090985 SRS1732993 GSM2339533 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339533 GEO Accession GSM2339533 SRX2228743 GSM2339534 SRP090985 SRS1732994 GSM2339534 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339534 GEO Accession GSM2339534 SRX2228744 GSM2339535 SRP090985 SRS1732995 GSM2339535 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339535 GEO Accession GSM2339535 SRX2228745 GSM2339536 SRP090985 SRS1732996 GSM2339536 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339536 GEO Accession GSM2339536 SRX2228746 GSM2339537 SRP090985 SRS1732997 GSM2339537 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339537 GEO Accession GSM2339537 SRX2228747 GSM2339538 SRP090985 SRS1732998 GSM2339538 ChIP-Seq GENOMIC ChIP Cells were washed with PBS, fixed for 10 minutes at 1% formaldehyde, and quenched with glycine (at 125 mM final) for 5 minutes at room temperature. Cells were washed three times with ice-cold PBS, and harvested. The pellet was lysed, resuspended in 1 mL of sonication buffer (10 mM Tris at pH 8, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.1% NaDOC, 0.5% NLS, and protease inhibitors), transferred to TC 12x12 tubes (Covaris), and sonicated (Covaris settings: 30 minutes, 5% duty cycle, 140W, 200 cycles). Chromatin was decrosslinked (RNAse A at 1μg/μL, 65°C overnight), purified and quantified by Nanodrop. Fragment size was assessed on a Bioanalyzer High Sensitivity chip (Agilent 2100). Immunoprecipitations were performed with 40 ug of chromatin (for KAP1 and SETDB1), or 20 ug of chromatin (for histone modifications), with antibody-coupled magnetic beads (Dynabeads, ThermoFisher) in IP buffer (10 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 2% Triton X-100, and protease inhibitors) overnight. Chromatin was decrosslinked (Proteinase K at 400ng/μL, 65°C overnight) and DNA purified for analysis. Illuminal ChIP-seq protocol Illumina HiSeq 2500 gds 302339538 GEO Accession GSM2339538