Antigen

Antigen Class

Histone

Antigen

H3K27me3

Cell type

Cell type Class

Liver

Cell type

Liver

MeSH Description

A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.

Sample

source_name

liver cells

strain

C57BL/6

genotype/variation

ficolinA ko

chip antibody

H3K27me3 (Cell Signaling Technology, Cat# 9733)

Sequenced DNA Library

library_strategy

ChIP-Seq

library_source

GENOMIC

library_selection

ChIP

library_construction_protocol

Lysates were clarified from sonicated nuclei and histone-DNA complexes were isolated with antibody. Libraries were prepared according to Illumina's instructions accompanying the DNA Sample Kit (Part# 0801-0303). Briefly, DNA was end-repaired using a combination of T4 DNA polymerase, E. coli DNA Pol I large fragment (Klenow polymerase) and T4 polynucleotide kinase. The blunt, phosphorylated ends were treated with Klenow fragment (32 to 52 exo minus) and dATP to yield a protruding 3- 'A' base for ligation of Illumina's adapters which have a single 'T' base overhang at the 3' end. After adapter ligation DNA was PCR amplified with Illumina primers for 15 cycles and library fragments of ~250 bp (insert plus adaptor and PCR primer sequences) were band isolated from an agarose gel. The purified DNA was captured on an Illumina flow cell for cluster generation. Libraries were sequenced on the Genome Analyzer following the manufacturer's protocols.

Sequencing Platform

instrument_model

Illumina Genome Analyzer

mm10

Number of total reads

28710122

Reads aligned (%)

67.8

Duplicates removed (%)

5.1

Number of peaks

140 (qval < 1E-05)

mm9

Number of total reads

28710122

Reads aligned (%)

67.7

Duplicates removed (%)

5.0

Number of peaks

113 (qval < 1E-05)