Proteolysis is essential for many aspects of plant physiology and development. It is
responsible for cellular housekeeping and the stress response by removing …

The timing of floral transition is critical to reproductive success in angiosperms and is
genetically controlled by a network of flowering genes. In Arabidopsis, expression of certain …

The plant hormone ethylene regulates a variety of processes of growth and development. To
identify components in the ethylene signal transduction pathway, we screened for ethylene …

The intracellular level of a protein is dependent on both its rate of synthesis and its rate of
degradation. Thus, differential regulation of protein stability represents a potential …

Putative high‐affinity nitrate (NO3–) transporter genes, designated Nrt2; 1At and Nrt2; 2At,
were isolated from Arabidopsis thaliana by RT–PCR using degenerate primers. The genes …

The 26S proteasome is an ATP-dependent eukaryotic protease responsible for degrading
many important cell regulators, especially those conjugated with multiple ubiquitins. Bound …

Summary The Rad6‐Bre1 complex monoubiquitinates histone H2B in target gene
chromatin, and plays an important role in positively regulating gene expression in yeast …

The ubiquitin-like protein RUB1 is conjugated to target proteins by a mechanism similar to
that of ubiquitin conjugation. Genetic studies in Arabidopsis thaliana have implicated the …

Abstract The ubiquitin (Ub)/26S proteasome system (UPS) directs the turnover of numerous
regulatory proteins, thereby exerting control over many aspects of plant growth …

Ubiquitin is a small, highly conserved protein found in all eukaryotes. Within the cell,
ubiquitin is covalently linked to substrate proteins, often targeting them for degradation via …