Kelch repeat proteins commonly form six-bladed beta-propeller domains that mediate molecular recognition, protein interactions, ubiquitination, signaling, and cellular regulation.
WD40 repeat proteins commonly form seven-bladed beta-propellers that function as versatile platforms for protein interactions, signaling, transcription, protein degradation, and cellular regulation.
Kelch repeats are protein structural units that form beta-propeller domains. They help proteins recognize specific partners and play important roles in protein degradation, cellular stress responses, and cytoskeletal organization.
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 oligomerization enables the formation of dimers, multimers, and higher-order complexes that regulate E2 recruitment, substrate recognition, ubiquitin transfer, autoubiquitination, and cellular signaling.
RING E3 ligase autoubiquitination provides an important mechanism for regulating E3 stability, activity, localization, and protein turnover through dynamic ubiquitin signaling.
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.
Hsp70 co-chaperones regulate the activity and specificity of Hsp70 molecular chaperones. Discover how Hsp40/J-domain proteins, nucleotide exchange factors, BAG proteins, Hsp110, and other co-chaperones control protein folding, substrate binding, quality control, and degradation.
Proteolytic cleavage is the enzymatic breakdown of protein peptide bonds by proteases. Explore proteolysis, protease classes, cleavage specificity, zymogen activation, protein degradation, detection, mass spectrometry, and applications.
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.
Protein pupylation is a bacterial post-translational modification system that regulates protein degradation and cellular protein homeostasis. Explore its components, mechanism, biological functions, and importance in Mycobacterium tuberculosis.
Kelch repeat proteins commonly form six-bladed beta-propeller domains that mediate molecular recognition, protein interactions, ubiquitination, signaling, and cellular regulation.
WD40 repeat proteins commonly form seven-bladed beta-propellers that function as versatile platforms for protein interactions, signaling, transcription, protein degradation, and cellular regulation.
Kelch repeats are protein structural units that form beta-propeller domains. They help proteins recognize specific partners and play important roles in protein degradation, cellular stress responses, and cytoskeletal organization.
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 oligomerization enables the formation of dimers, multimers, and higher-order complexes that regulate E2 recruitment, substrate recognition, ubiquitin transfer, autoubiquitination, and cellular signaling.
RING E3 ligase autoubiquitination provides an important mechanism for regulating E3 stability, activity, localization, and protein turnover through dynamic ubiquitin signaling.
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.
Hsp70 co-chaperones regulate the activity and specificity of Hsp70 molecular chaperones. Discover how Hsp40/J-domain proteins, nucleotide exchange factors, BAG proteins, Hsp110, and other co-chaperones control protein folding, substrate binding, quality control, and degradation.
Proteolytic cleavage is the enzymatic breakdown of protein peptide bonds by proteases. Explore proteolysis, protease classes, cleavage specificity, zymogen activation, protein degradation, detection, mass spectrometry, and applications.
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.
Protein pupylation is a bacterial post-translational modification system that regulates protein degradation and cellular protein homeostasis. Explore its components, mechanism, biological functions, and importance in Mycobacterium tuberculosis.
