The formation of a protein homotrimer, a macromolecular structure consisting of three noncovalently associated identical subunits.

Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.

An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain an additional tiers: the upstream MAP4K. The kinases in each tier phosphorylate and activate the kinase in the downstream tier to transmit a signal within a cell.

Any process that activates or increases the rate or extent of cell proliferation.

Any process that activates or increases the rate or extent of progression through the mitotic cell cycle.

All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

That part of the nuclear content other than the chromosomes or the nucleolus.

A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.

A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.

A dense aggregation in the nucleus composed of proteins and RNAs that appear when the cell is under stress.