Revision 6
Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IF-IC, FC-FP, ChIP, ChIP-seq

REACTIVITY:

H M R Mk

SENSITIVITY:

Endogenous

MW (kDa):

23

Source/Isotype:

Rabbit IgG

UniProt ID:

#P33778

Entrez-Gene Id:

3018

Product Information

Product Usage Information

For optimal ChIP and ChIP-seq results, use 2.5 μl of antibody and 10 μg of chromatin (approximately 4 x 106 cells) per IP. This antibody has been validated using SimpleChIP® Enzymatic Chromatin IP Kits.

Application Dilution
Western Blotting 1:1000
Immunofluorescence (Immunocytochemistry) 1:800 - 1:3200
Flow Cytometry (Fixed/Permeabilized) 1:400 - 1:1600
Chromatin IP 1:200
Chromatin IP-seq 1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb detects endogenous levels of histone H2B protein only when ubiquitylated on Lys120. The antibody does not cross-react with other ubiquitylated proteins or free ubiquitin.

Species Reactivity:

Human, Mouse, Rat, Monkey

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the carboxy terminus of the human histone H2B protein in which Lys120 is mono-ubiquitylated.

Background

The nucleosome, made up of four core histone proteins (H2A, H2B, H3 and H4), is the primary building block of chromatin. Originally thought to function as a static scaffold for DNA packaging, histones have now been shown to be dynamic proteins, undergoing multiple types of post-translational modifications, including acetylation, phosphorylation, methylation, and ubiquitylation (1). Ubiquitin is a conserved 76 amino acid peptide unit that can be covalently linked to many cellular proteins by the ubiquitylation process. Three components are involved in this protein-ubiquitin conjugation process. Ubiquitin is first activated by forming a thiolester complex with the activation component E1; the activated ubiquitin is subsequently transferred to the ubiquitin-carrier protein E2, then from E2 to ubiquitin ligase E3 for final delivery to the epsilon-NH2 of the target protein lysine residue (2). Histone H2B is mono-ubiquitylated on lysine 120 during transcriptional activation by the RAD6 E2 protein in conjunction with the BRE1A/BRE1B E3 ligase (also known as RNF20/RNF40) (3). The RAD6/BRE1 complex is recruited to gene promoters during activation by the PAF complex, an RNA polymerase II-associated protein complex that regulates transcriptional elongation (3-5). Mono-ubiquitylated histone H2B lysine 120 is associated with the transcribed region of active genes (3,6). Mono-ubiquitylation of histone H2B stimulates transcriptional elongation by facilitating FACT-dependent chromatin remodeling (7,8). In addition, it is essential for subsequent methylation of histone H3 lysines 4 and 79, two additional histone modifications that regulate transcriptional initiation and elongation (9). Interestingly, de-ubiquitylation of histone H2B lysine 120 by USP22, a subunit of the human SAGA histone acetyltransferase complex, is a required step in transcriptional activation (10). Thus, it appears that the ubiquitylation state of histone H2B is dynamic during transcription and may serve as an intermediate step in transcriptional activation.

  1. Peterson, C.L. and Laniel, M.A. (2004) Curr Biol 14, R546-51.
  2. Liu, F. and Walters, K.J. (2010) Trends Biochem Sci 35, 352-60.
  3. Kim, J. et al. (2009) Cell 137, 459-71.
  4. Wood, A. et al. (2003) J Biol Chem 278, 34739-42.
  5. Xiao, T. et al. (2005) Mol Cell Biol 25, 637-51.
  6. Minsky, N. et al. (2008) Nat Cell Biol 10, 483-8.
  7. Pavri, R. et al. (2006) Cell 125, 703-17.
  8. Fleming, A.B. et al. (2008) Mol Cell 31, 57-66.
  9. Shilatifard, A. (2006) Annu Rev Biochem 75, 243-69.
  10. Wyce, A. et al. (2004) Novartis Found Symp 259, 63-73; discussion 73-7, 163-9.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized) ChIP: Chromatin IP ChIP-seq: Chromatin IP-seq

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
XP is a registered trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

使用に関する制限

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Revision 6
#5546

Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb

Western Blotting Image 1: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Western blot analysis of extracts from various cell lines using Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb.
Immunofluorescence Image 1: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Confocal immunofluorescent analysis of HeLa cells using Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb (green) and COX IV (4D11-B3-E8) Mouse mAb #11967 (red).
Flow Cytometry Image 1: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Flow cytometric analysis of HeLa cells using Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb (blue) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (red). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
Chromatin Immunoprecipitation Image 1: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from untreated HeLa cells and Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Library was prepared using DNA Library Prep Kit for Illumina (ChIP-seq, CUT&RUN) #56795. The figure shows binding across ACTB gene.
Chromatin Immunoprecipitation Image 2: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from untreated HeLa cells and Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Library was prepared using DNA Library Prep Kit for Illumina (ChIP-seq, CUT&RUN) #56795. The figures show binding across ACTB gene (upper) and EIF4H gene (lower).
Chromatin Immunoprecipitation Image 3: Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from HeLa cells and either Ubiquityl-Histone H2B (Lys120) (D11) XP® Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using SimpleChIP® Human γ-Actin Promoter Primers #5037, SimpleChIP® Human γ-Actin Intron 3 Primers #5047, SimpleChIP® Human GAPDH Promoter Primers #4471, and SimpleChIP® Human GAPDH Intron 2 Primers #4478. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.