Description
General description
17 kDa
All ChIPAb+ antibodies are individually validated for chromatin precipitation, every lot, every time. Each ChIPAb+ antibody set includes control primers (tested every lot by qPCR) to biologically validate your IP results in a locus-specific context. The qPCR protocol and primer sequences are provided, allowing researchers to validate ChIP protocols when using our antibody in their chromatin context. Each set also includes a negative control antibody to ensure specificity of the ChIP reaction.
The ChIPAb+ Acetyl-Histone H3 (Lys9/18) set includes the Acetyl-Histone H3 (Lys9/18) antibody, a Normal rabbit serum, and control primers which amplify a 166 bp region of human GAPDH promoter. The Acetyl-Histone H3 (Lys9/18) and negative controls are supplied in a scalable "per ChIP" reaction size and can be used to functionally validate the precipitation of Acetyl-Histone H3 (Lys9/18)-associated chromatin.
Histone H3 is one of the 5 main histone proteins involved in the structure of chromatin in eukaryotic cells. Featuring a main globular domain and a long N terminal tail H3 is involved with the structure of the nucleosomes of the ′beads on a string′ structure.
Acetylation of histone H3 occurs at several different lysine positions in the histone tail and is performed by a family of enzymes known as Histone Acetyl Transferases (HATs).
Immunogen
Epitope: Acetylated Lys9/18
KLH-conjugated synthetic peptide (..ARAcKSTGGKAPRAcKQL..) in which AcK corresponds to acetyl-lysine at residue 9 and 18 of human Histone H3.
Application
Chromatin Immunoprecipitation:
Representative lot data.
Sonicated chromatin prepared from HeLa cells (1 X 10E6 cell equivalents per IP) were subjected to chromatin immunoprecipitation using 1 µL of either Normal Rabbit Serum, or 1 µL of Anti-Acetyl-Histone H3 (Lys9/18), and the Magna ChIP® A Kit (Cat. # 17-610). Successful immunoprecipitation of acetyl-Histone H3 (Lys9/18) associated DNA fragments was verified by qPCR using Control Primers specific for the human GAPDH promoter region as a positive locus and human β-globin primers as a negative locus. (Figure 2). Data is presented as percent input of each IP sample relative to input chromatin for each amplicon and ChIP sample as indicated.
Please refer to the EZ-Magna ChIP A (Cat. # 17-408) or EZ-ChIP (Cat. # 17-371) protocol for experimental details
Western Blot Analysis:
Representative lot data.
Acid extracts from untreated (lane 1), sodium butyrate treated (lane 2, Catalog # 17-305) HeLa cells and recombinant Histone
H3, (Lane 3, Catalog # 14-411) were resolved by electrophoresis, transferred to nitrocellulose and probed with Anti-Acetyl-Histone H3 (Lys9/18) (1:5,000 dilution). Proteins were visualized using a goat anti-rabbit secondary antibody conjugated to HRP and a chemiluminescence detection system.
Arrow indicates Acetyl-histone H3 (Lys9/18) (~17kDa). (Figure 3).
Beadlyte Histone-Peptide Specificity Assay:
Representative lot data.
1:1,000-1:40,000 dilutions of anti-acetyl-Histone H3 (Lys9/18) were incubated with a cocktail of microspheres conjugated to histone H3 peptides with the following modifications:
1. acetyl-lysine 4
2. acetyl-lysine 14
3. acetyl-lysine 9
4. acetyl-lysine 18
5. No modifications, containing aa 1-20
Unbound antibody was removed by filtration. The peptide-antibody complexes were incubated with a biotin-conjugated anti-mouse secondary antibody followed by incubation with a phycoerythrin-streptavidin conjugate.
Fluorescence was read on a Luminex 100 instrument. Median
fluorescence intensity (MFI) is plotted. (Figure 4).
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Histones
This ChIPAb+ Acetyl-Histone H3 (Lys9/18) -ChIP Validated Antibody & Primer Set conveniently includes the antibody & the specific control PCR primers.
Biochem/physiol Actions
Broad species cross-reactivity expected
Recognizes Histone H3 acetylated on lysines 9 and 18.
Packaging
25 assays per set. Recommended use: ~1 μL of antibody per chromatin immunoprecipitation (dependent upon biological context).
Physical form
Anti-Acetyl-Histone H3 (Lys9/18) (rabbit polyclonal), . One vial containing 25 µL of rabbit antiserum containing 0.05% sodium azide before the addition of glycerol to 30%. Store at -20°C.
Normal Rabbit Serum, . One vial containing 25 μL of antiserum containing 0.05% sodium azide. Store at -20°C.
Control Primers, human GAPDH promoter, . One vial containing 75 μL of 5 μM of each primer specific for human GAPDH. Store at -20°C.
FOR: TAC TAG CGG TTT TAC GGG CG
REV: TCG AAC AGG AGG AGC AGA GAG CGA
Unpurified
Preparation Note
Stable for 1 year at -20°C from date of receipt. Handling Recommendations: Upon first thaw, and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.
Note: Variability in freezer temperatures below -20°C may cause glycerol containing solutions to become frozen during storage.
Analysis Note
Chromatin Immunoprecipitation:
Representative lot data.
Sonicated chromatin prepared from HeLa cells (1 X 10E6 cell equivalents per IP) were subjected to chromatin immunoprecipitation using 1 µL of either Normal Rabbit Serum,or 1 µL of Anti-Acetyl-Histone H3 (Lys9/18) and the Magna ChIP® A Kit (Cat. # 17-610). Successful immunoprecipitation of Acetyl-Histone H3 (Lys9/18) associated DNA fragments was verified by qPCR using Control Primers specific for the human GAPDH promoter region as a positive locus (Figure 1). Please refer to the EZ-Magna ChIP A (Cat. # 17-408) or EZ-ChIP (Cat. # 17-371) protocol for experimental details.
Control
Includes normal rabbit serum and primers specific for human GAPDH promoter.
Legal Information
MAGNA CHIP is a registered trademark of Merck KGaA, Darmstadt, Germany
UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
