Render Target: STATIC
Render Timestamp: 2024-12-03T12:15:19.365Z
Commit: cd2fae6ca3f811b1ddb1df24ac291ed56d5d501b
XML generation date: 2024-09-30 01:53:22.747
Product last modified at: 2024-11-21T15:45:13.920Z
1% for the planet logo
PDP - Template Name: Monoclonal Antibody
PDP - Template ID: *******c5e4b77
R Recombinant
Recombinant: Superior lot-to-lot consistency, continuous supply, and animal-free manufacturing.

MacroH2A1.1 (D5F6N) Rabbit mAb #12455

Filter:
  • WB
  • IF

    Supporting Data

    REACTIVITY H M R
    SENSITIVITY Endogenous
    MW (kDa) 40
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    • IF-Immunofluorescence 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 
    • R-Rat 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunofluorescence (Immunocytochemistry) 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.

    Protocol

    Specificity / Sensitivity

    MacroH2A1.1 (D5F6N) Rabbit mAb recognizes endogenous levels of total MacroH2A1.1 protein. This antibody does not cross-react with other MacroH2A proteins, including MacroH2A1.2 and MacroH2A2.

    Species Reactivity:

    Human, Mouse, Rat

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala211 of human MacroH2A1.1 protein.

    Background

    Histone macroH2A1 and macroH2A2 comprise a family of variant histone H2A proteins. MacroH2A1 exists as two distinct isoforms due to alternative splicing of a single gene; macroH2A1.1 levels accumulate throughout differentiation and development while macroH2A1.2 shows a constant level of expression (1). MacroH2A1 and macroH2A2 are encoded by completely distinct genes located on separate chromosomes (2,3). Both macroH2A1 and macroH2A2 proteins contain an amino-terminal histone-like region with 64% sequence identity to canonical histone H2A, in addition to a carboxy-terminal “macro” domain (1-3). MacroH2A1 and macroH2A2 are enriched in facultative heterochromatin, including inactivated X chromosomes in mammalian females and senescence-associated heterochromatin foci (2-5). Both act to repress gene transcription by inhibiting the binding of transcription factors to chromatin, the acetylation of histones by p300, and the chromatin-remodeling activities of SWI/SNF and ACF (6,7). The macro domain of macroH2A1.1 binds to ADP-ribose and functions to recruit macroH2A1.1 to activated PARP at sites of DNA damage, where it mediates chromatin rearrangements to locally regulate the DNA damage response (8). MacroH2A1.2 and macroH2A2 do not bind poly-ADP-ribose and are not recruited to sites of activated PARP (8).
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