Human cullin-RING ligases are buffered to a much greater extent than had been previously appreciated, and the roles of ubiquitin chain extension enzymes are far more nuanced at physiological concentrations.
Quantitative phosphoproteomics defines the substrates for Cyclin A/Cdk1 kinase during early mitosis and follow up studies validate that one identified substrate, MYPT1, influences the stability of k-MT attachments by regulating Plk1.
Lamellipodin, an important regulator of cytoskeletal and assembly cell migration, enhances the activity of Ena/VASP family actin polymerases by clustering them on leading-edge membranes and tethering them to actin filaments.
High-throughput phenotypic screening followed by unbiased target identification reveals a new molecular glue HQ461 that induces CDK12-DDB1 interaction to promote degradation of Cyclin K via the ubiquitin proteasome system.
Expression of Pitx2c at the onset of gastrulation drives convergence and extension movements in the zebrafish embryo by promoting downstream pathways affecting chemokine signaling, integrin-ECM interactions, and planar cell polarity components.