Histone Ubiquitination Assay

Mass spectrometry can be used to detect post-translational modifications of histones, including the detection of histone ubiquitination. Biotech company BGI offers mass spectrometry-based histone ubiquitination detection services.

Histone Ubiquitination

Ubiquitin is a small regulatory protein that is ubiquitously distributed and highly conserved in eukaryotes. It is involved in various cellular processes, including protein degradation, stress response, cell cycle regulation, protein transport, endocytosis signaling, and transcriptional regulation. The process of adding ubiquitin to substrate proteins through enzymatic action is called protein ubiquitination. Histone ubiquitination is a type of post-translational modification of histones. Histone H2A was the first identified ubiquitinated histone; in higher eukaryotes, about 5-15% of H2A is monoubiquitinated at the highly conserved K119 site (ubH2A). In addition to H2A, H2B is also ubiquitinated, but to a lesser extent (1-2%). There are also reports of ubiquitination of H3 and H1, but it is not as common as H2A and H2B. As an important post-translational modification of histones, histone ubiquitination plays a crucial role in the dynamic regulation of nucleosome structure and is also involved in the cell's DNA damage response and transcriptional repression.

Histone Ubiquitination Assay

Histone Ubiquitination Assay

Histone ubiquitination detection includes determining whether ubiquitination has occurred, identifying which amino acid is ubiquitinated, and assessing the level of ubiquitination. There are various methods for detecting histone ubiquitination, including antibody-based methods and mass spectrometry-based methods. Mass spectrometry-based methods can qualitatively and quantitatively detect histone ubiquitination and other post-translational modifications of histones.

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