Any cellular process that depends upon or alters the microtubule cytoskeleton, that part of the cytoskeleton comprising microtubules and their associated proteins.

The expansion of a neuroblast population by cell division. A neuroblast is any cell that will divide and give rise to a neuron.

The chemotaxis process that directs the migration of an axon growth cone to a specific target site in response to a combination of attractive and repulsive cues.

The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).

The regionalization process that results in defined areas of the imaginal disc that will undergo specific cell differentaiton. Imaginal discs are epithelial infoldings in the larvae of holometabolous insects that develop into adult appendages (legs, antennae, wings, etc.) during metamorphosis from larval to adult form.

Movement of the anterior ectoderm to the interior of the embryo.

The attachment of one cell to another cell via adhesion molecules, where both cells are part of the same organism.

The process whose specific outcome is the progression of the medulla oblongata over time, from its formation to the mature structure. The medulla oblongata lies directly above the spinal cord and controls vital autonomic functions such as digestion, breathing and the control of heart rate.

Any process that modulates the frequency, rate or extent of the activity of the Wnt signal transduction pathway.

Any process that stops, prevents, or reduces the frequency, rate or extent of the Wnt signaling pathway.

Directed movement of the oocyte, following its specification, from its original central position in the cyst to a posterior position relative to the nurse cells of the egg chamber, and its maintenance in this posterior location. This is the first sign of anterior-posterior asymmetry in the developing egg chamber.

Any cellular process that results in the specification, formation or maintenance of polarized microtubule-based cytoskeletal structures.

The process that gives rise to the patterns of cell differentiation in the chitin-based larval cuticle. An example of this is found in Drosophila melanogaster.

The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.

Any process that activates or increases the frequency, rate or extent of protein complex assembly.

Any process that stops, prevents, or reduces the frequency, rate or extent of programmed cell death that occurs in the compound eye retina.

A cell cycle process that results in the division of the cytoplasm of a cell after mitosis, resulting in the separation of the original cell into two daughter cells.

The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.

The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.

Any cellular process that depends upon or alters the microtubule cytoskeleton, that part of the cytoskeleton comprising microtubules and their associated proteins.

The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.

The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.

The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.

Synthesis, including the chemical reactions and pathways resulting in the formation of chitin and other components, and deposition of a chitin-based embryonic cuticle by the underlying epidermal epithelium. This tough, waterproof cuticle layer is essential to provide structural integrity of the larval body. An example of this is found in Drosophila melanogaster.

Any process that stops, prevents, or reduces the frequency, rate or extent of signal transduction.

The series of molecular signals initiated by binding of a Wnt protein to a frizzled family receptor on the surface of the target cell and ending with a change in cell state.

Any process that modulates the frequency, rate or extent of the activity of the Wnt signal transduction pathway.

Formation of furrows in the cytoplasm between nuclei during cell cycles in embryos that contribute to the formation of the syncytial blastoderm. An example of this process is found in Drosophila melanogaster.

Directed movement of the oocyte, following its specification, from its original central position in the cyst to a posterior position relative to the nurse cells of the egg chamber, and its maintenance in this posterior location. This is the first sign of anterior-posterior asymmetry in the developing egg chamber.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of actin-based cytoskeletal structures in the cell cortex, i.e. just beneath the plasma membrane.

The directed movement of nuclei within the syncytial embryo of insects. These precise temporal and spatial patterns of nuclear movement are coordinated with mitotic divisons and are required during blastoderm formation to reposition dividing nuclei from the interior of the syncytial embryo to the cortex.

The cell cycle process in which the directed movement of the mitotic spindle to a specific location in the cell occurs.

Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the breakdown of a protein by the destruction of the native, active configuration, with or without the hydrolysis of peptide bonds.

Any process that activates or increases the frequency, rate or extent of the hydrolysis of a peptide bond or bonds within a protein.

Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.

The series of molecular signals initiated by binding of a Wnt protein to a frizzled family receptor on the surface of the target cell, followed by propagation of the signal via beta-catenin, and ending with a change in transcription of target genes. In this pathway, the activated receptor signals via downstream effectors that result in the inhibition of beta-catenin phosphorylation, thereby preventing degradation of beta-catenin. Stabilized beta-catenin can then accumulate and travel to the nucleus to trigger changes in transcription of target genes.

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

Any multimeric complex connected to a microtubule.

The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.

The region of a polarized cell that forms a tip or is distal to a base. For example, in a polarized epithelial cell, the apical region has an exposed surface and lies opposite to the basal lamina that separates the epithelium from other tissue.

Either of the ends of a spindle, where spindle microtubules are organized; usually contains a microtubule organizing center and accessory molecules, spindle microtubules and astral microtubules.

A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

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

A cell junction at which anchoring proteins (cadherins or integrins) extend through the plasma membrane and are attached to actin filaments.

The region of a cell that lies just beneath the plasma membrane and often, but not always, contains a network of actin filaments and associated proteins.

The apical end of the lateral plasma membrane of epithelial cells.

A neuron projection that has a short, tapering, often branched, morphology, receives and integrates signals from other neurons or from sensory stimuli, and conducts a nerve impulse towards the axon or the cell body. In most neurons, the impulse is conveyed from dendrites to axon via the cell body, but in some types of unipolar neuron, the impulse does not travel via the cell body.

A cytoplasmic protein complex containing glycogen synthase kinase-3-beta (GSK-3-beta), the adenomatous polyposis coli protein (APC), and the scaffolding protein axin, among others; phosphorylates beta-catenin, targets it for degradation by the proteasome.

A cytoplasmic protein complex containing glycogen synthase kinase-3-beta (GSK-3-beta), the adenomatous polyposis coli protein (APC), and the scaffolding protein axin, among others; phosphorylates beta-catenin, targets it for degradation by the proteasome.

The cleavage furrow is a plasma membrane invagination at the cell division site. The cleavage furrow begins as a shallow groove and eventually deepens to divide the cytoplasm.

The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.

A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.

The region that lies just beneath the plasma membrane on the apical edge of a cell.

The region that lies just beneath the plasma membrane on the basal edge of a cell.