Sample information curated by ChIP-Atlas

Antigen

Antigen Class
TFs and others
Antigen
MED1

Cell type

Cell type Class
Breast
Cell type
MCF-7
Primary Tissue
Breast
Site of Extraction
Pleura
Tissue Diagnosis
Adenocarcinoma

Attributes by original data submitter

Sample

source_name
MCF-7_Med12_ChIP-seq
cell line
MCF-7
cell type
breast adenocarcinoma cells
chip antibody
Med12
chip antibody vendor
Bethyl

Sequenced DNA Library

library_strategy
ChIP-Seq
library_source
GENOMIC
library_selection
ChIP
library_construction_protocol
For ChIP and FAIRE assays, DNA was extracted according to Svotelis et al. (Methods Mol Biol., 2009) and to Eeckhoute et al. (Genome Res., 2009) with few modifications. In brief, ~20-30.106 cells were cross-linked using 1.1% formaldehyde for 10 or 30 min at RT in 20ml of PBS 1X, reaction was quenched with 1ml of 2.5M Glycine. Cells were lysed with SDS lysis buffer (1% SDS, 10 mM EDTA, 50 mM Tris–HCI of pH 8.1) during 30 min at 4°C and sonicated to have DNA fragment size between 200 and 300 bp. For ChIP, lysate was incubated overnight at 4°C on a rotator with 5µg of antibody. 35 µl of protein-A magnetic beads (Invitrogen) were added during 2h before washing with TSE-150 (0.1% SDS, 1% Triton, 2 mM EDTA, 20 mM Tris–HCl of pH 8.1, 150 mM NaCl), TSE-500 (0.1% SDS, 1% Triton, 2 mM EDTA, 20 mM Tris of pH 8.1, 500 mM NaCl), LiCl detergent (0.25 M LiCl, 1% NP40, 1% sodium deoxycholate, 1 mM EDTA, 10 mM Tris of pH 8.1) and three times with TE 1X. For FAIRE, soluble chromatin was subjected to three consecutive phenol-chloroform extractions. DNA was then reverse-crosslinked overnight at 65ºC and treated with RNAse A for 30 min at 37°C, followed by Proteinase K for 2 h at 37°C. After purification, DNA was quantified with Picogreen (Invitrogen) before library preparation. Libraries were prepared according to Illumina's instructions. Briefly, 10 ng (ChIP-seq) or 50 ng (FAIRE-seq) of DNA were end-repaired using a combination of T4 DNA polymerase and T4 polynucleotide kinase (Enzymatics). DNA fractions of ~300 bp were selectively isolated with solid-phase reversible immobilization (SPRI) beads (Agencourt AMPure, Beckman Coulter). After adapter ligation, DNA was PCR amplified with Illumina primers, the quality and quantity of each DNA library was analyzed using Agilent Bioanalyser before sequencing on HiSeq (Illumina) following the manufacturer's protocols.

Sequencing Platform

instrument_model
Illumina HiSeq 2000

hg19

Number of total reads
44010631
Reads aligned (%)
43.3
Duplicates removed (%)
55.5
Number of peaks
1118 (qval < 1E-05)

hg38

Number of total reads
44010631
Reads aligned (%)
45.2
Duplicates removed (%)
53.9
Number of peaks
791 (qval < 1E-05)

Base call quality data from DBCLS SRA