Home Research Proteomics Protein Ubiquitination Analysis
Protein Ubiquitination Analysis

Covalent attachment of ubiquitin to proteins governs a wide array of cellular processes, including cell division, DNA repair, endocytosis, cellular signaling, and protein quality control. The sequential action of three enzymes — E1 ubiquitin-activating enzyme, E2 ubiquitin-conjugating enzyme, and E3 ubiquitin ligase results in attachment of ubiquitin to a substrate protein, usually via an amide (isopeptide) bond that links the C-terminal carboxyl group of ubiquitin with a lysine side chain(s) of the protein substrate . Ubiquitin itself possesses seven lysine residues (Lys6, 11, 27, 29, 33, 48, and 63), enabling it to form ubiquitin polymers; chains with different linkages signal different functional outcomes for the tagged proteins . All seven lysines are used for chain formation in vivo, as is the N-terminal α-amino group, the latter leading to ‘linear’ ubiquitin chains. Chains can be homopolymeric or, less commonly, of mixed linkage. Branched ubiquitin chains, which use different lysines of a single ubiquitin for chain extension, can also form.


Advantages

Instrument: Orbitrap high resolution mass spectrometry, realizing ultra-high sensitivity detection.

Enrichment Kit: ultra high enrichment efficiency and coverage.

Qualitative and quantitative: internationally recognized data search software.


Application

Disease biomarkers

Plant stress

Molecular mechanism of occurrence and development of diseases

Target of chemical or biological drugs

/**/