Autoantibodies to histone antigens have been described in patients with idiopathic and drug-induced SLE, rheumatoid arthritis and other conditions. The presence of autoantibodies to histones are frequently found in several rheumatic disorders. In one study, the predominant responses to histones in SLE sera were to H1, H2b, and H3. Marked elevations of binding occurred to H1 and H2b in 33% of patients, while 25% showed higher binding to H3. The same study showed the highest anti-histone reactivity to be in patients with rheumatoid arthritis with vasculitis, while the highest reactivity in SLE sera was in those patients with a history of photosensitivity. In diploid eukaryotic cells, the chromatin fibers are about 20nm in diameter. They consist of two major components in equal amounts, DNA and basic proteins called histones. Histones are believed to be regularly arranged in the deep grove of the DNA helix. The recurring positive charges of the histones form electrostatic associations with the negatively charged phosphate groups of DNA making the DNA more stable and flexible. This allows for the supercoiling of the chromatin fibers.

Suitable for use in FLISA, Western Blot and Immunoprecipitation. Other applilcations have not been tested.

Optimal dilutions to be determined by the researcher.

Lysine Rich (H1, f1): ~21,500 Slightly Lysine Rich (H2a, f2a2): 14,004 Slightly Lysine Rich (H2b, f2b): 13,774 Arginine Rich (H3, f3): 15,324 Arginine Rich (H4, f2a1): 11,282

Store product at 4°C in the dark. DO NOT FREEZE! Stable at 4°C for 12 months after receipt as an undiluted liquid. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Caution: MaxLight™650 conjugates are sensitive to light. For maximum recovery of product, centrifuge the original vial prior to removing the cap.

Note: Applications are based on unconjugated antibody.

Intact calf Histone core complex to rRNA

Supplied as a liquid in PBS, pH 7.2. No preservative added. Labeled with MaxLight™650.

Purified by Protein G affinity chromatography.

Recognizes all bovine histones at ~15kD. Species Crossreactivity: human