Tag: Ubiquitination

Kelch repeat proteins commonly form six-bladed beta-propeller domains that mediate molecular recognition, protein interactions, ubiquitination, signaling, and cellular regulation.

Degrons are protein degradation signals that determine when proteins are recognized and removed by cellular degradation pathways. Learn how degrons regulate protein stability, signaling, proteostasis and the ubiquitin–proteasome system.

RING E3 ligase complexes use adaptor proteins and substrate receptors to coordinate E2 recruitment, substrate recognition, ubiquitin transfer, cellular localization, and pathway-specific regulation.

RING E3 ligase regulation involves phosphorylation, ubiquitination, protein interactions, oligomerization, cellular localization, and signaling pathways that control E3 activity and substrate specificity.

RING E3 ligase autoubiquitination provides an important mechanism for regulating E3 stability, activity, localization, and protein turnover through dynamic ubiquitin signaling.

Ubiquitin chain formation by RING E3 ligases generates diverse molecular signals that regulate protein degradation, cellular signaling, DNA damage responses, immunity, and protein homeostasis.

RING E3 ligases selectively recognize protein substrates through degrons, adaptor proteins, post-translational modifications, localization, and structural interactions that control ubiquitination.

The RING-E2 interaction is central to RING E3 ligase activity. Explore how RING domains bind E2 enzymes, position ubiquitin, and promote transfer to target proteins.

The RING finger domain is an important zinc-binding protein domain involved in ubiquitination, cellular signaling, DNA repair, protein degradation, and disease. Explore its structure, functions, and biological significance.

Glycine and post-translational modification are connected through protein structure, sequence context, ubiquitination, protein regulation, proteomics, genetic variation, and cellular signaling.

Post-translational modifications are essential regulators of cell-cycle progression. Learn how phosphorylation, ubiquitination, acetylation, SUMOylation, methylation, and other PTMs control CDKs, cyclins, checkpoints, DNA replication, mitosis, and protein degradation.

Protein neddylation is an important post-translational modification involving the attachment of NEDD8 to target proteins. Learn how neddylation regulates cullin-RING ubiquitin ligases, protein degradation, cell-cycle progression, DNA repair, cellular signaling, and cancer biology.

Post-translational modifications are essential regulators of cell migration. Discover how phosphorylation, ubiquitination, acetylation, SUMOylation, methylation, and lipid modifications control cytoskeletal dynamics, focal adhesions, cell polarity, and cancer invasion.

Post-translational modifications are essential regulators of apoptosis. Learn how phosphorylation, ubiquitination, acetylation, SUMOylation, methylation, and other PTMs control p53, BCL-2 proteins, caspases, mitochondrial apoptosis, and cell survival.

Post-translational modifications (PTMs) are biochemical changes that occur during or after protein synthesis and regulate protein structure, activity, stability, localization, interactions, and degradation. This overview introduces the major types of PTMs, their biological functions, mechanisms, role in disease, and methods used to study protein modifications.