BP

GO:0000165

MAPK cascade

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

TAS

BP

GO:0002437

inflammatory response to antigenic stimulus

An inflammatory response to an antigenic stimulus, which can be include any number of T cell or B cell epitopes.

IEA

BP

GO:0007165

signal transduction

The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.

TAS

BP

GO:0008283

cell proliferation

The multiplication or reproduction of cells, resulting in the expansion of a cell population.

TAS

BP

GO:0018108

peptidyl-tyrosine phosphorylation

The phosphorylation of peptidyl-tyrosine to form peptidyl-O4'-phospho-L-tyrosine.

IEA

BP

GO:0032674

regulation of interleukin-5 production

Any process that modulates the frequency, rate, or extent of interleukin-5 production.

IEA

BP

GO:0038043

interleukin-5-mediated signaling pathway

A series of molecular signals initiated by the binding of interleukin-5 to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.

IEA

BP

GO:0043547

positive regulation of GTPase activity

Any process that activates or increases the activity of a GTPase.

IEA

CC

GO:0005615

extracellular space

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

TAS

CC

GO:0005622

intracellular

The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.

IEA

CC

GO:0005886

plasma membrane

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

TAS

CC

GO:0016021

integral component of membrane

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

IEA

MF

GO:0004713

protein tyrosine kinase activity

Catalysis of the reaction: ATP + a protein tyrosine = ADP + protein tyrosine phosphate.

TAS

MF

GO:0004914

interleukin-5 receptor activity

Combining with interleukin-5 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.

TAS

MF

GO:0005088

Ras guanyl-nucleotide exchange factor activity

Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.

TAS