Related Experiment Video
Updated: Aug 18, 2026

The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin
Published on: April 12, 2014
Chicken antichromatin antibodies: specificity to different chromatin fractions
Abstract:
Specific complement-fixing and precipitin antibodies were induced in chicken to chromatin from WI-38 human diploid fibroblast. Chicken antibodies were chosen because they present two major advantages with respect to rabbit antibodies: (a) the optimal NaCl concentration for chicken precipitin is 1.5 M, which is also an optimal solvent for chromatin proteins that are insoluble at the lower salt concentration required by rabbit precipitin; (b) chicken antichromatin antibodies require an antigen concentration much lower with respect to rabbit antibodies for saturation at the complement-fixation reaction. These antibodies are species specific and they react at the complement-fixation and precipitin assay not only with the whole chromatin but also with dissociated proteins, albeit at a higher concentration of both antigen and antibodies. The specificity of these antibodies to different fractions of chromosomal proteins and of the chromatin after washing with a solution at a different sodium chloride concentration has been investigated.
Related Concept Videos
Euchromatin
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...
Chromatin Immunoprecipitation- ChIP
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Heterochromatin
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
Immunoprecipitation
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...

