Interleukin-4 Active Protein | IL 4 active protein
Recombinant Human Interleukin-4, His Tag
Sterile Filtered clear solution.
Introduction: Interleukin-4 is a pleiotropic cytokine produced primarily by activated T lymphocytes, basophils and mast cells. Multiple immune response-modulating functions are performed by IL-4 on a variety of cell types and it has an important role in the regulator of isotype switching, induction of IgE production in B lymphocytes and differentiation of precursor T helper cells. IL-4 binds to both membrane-bound and secreted soluble IL-4 receptors.
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene is a pleiotropic cytokine produced by activated T cells. This cytokine is a ligand for interleukin 4 receptor. The interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. STAT6, a signal transducer and activator of transcription, has been shown to play a central role in mediating the immune regulatory signal of this cytokine. This gene, IL3, IL5, IL13, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL13. This gene, IL13 and IL5 are found to be regulated coordinately by several long-range regulatory elements in an over 120 kilobase range on the chromosome. Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]
Uniprot Description
IL4: Participates in at least several B-cell activation processes as well as of other cell types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Genetic variations in IL4 may be a cause of susceptibility to ischemic stroke (ISCHSTR); also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors. Belongs to the IL-4/IL-13 family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Motility/polarity/chemotaxis; Secreted, signal peptide; Cell cycle regulation; Cytokine; Secreted
Chromosomal Location of Human Ortholog: 5q31.1
Cellular Component: extracellular space; external side of plasma membrane
Molecular Function: protein binding; growth factor activity; cytokine activity; interleukin-4 receptor binding
Biological Process: regulation of isotype switching; positive regulation of isotype switching to IgG isotypes; negative regulation of osteoclast differentiation; positive regulation of transcription, DNA-dependent; microglial cell activation; regulation of proton transport; female pregnancy; chemotaxis; positive regulation of activated T cell proliferation; response to organic cyclic substance; positive regulation of interleukin-10 production; positive regulation of isotype switching to IgE isotypes; B cell costimulation; positive regulation of MHC class II biosynthetic process; connective tissue growth factor biosynthetic process; positive regulation of B cell proliferation; positive regulation of T cell proliferation; positive regulation of interleukin-13 production; negative regulation of macrophage activation; response to nutrient; response to drug; cholesterol metabolic process; negative regulation of chronic inflammatory response; regulation of immune response; T-helper 2 type immune response; B cell activation; regulation of phosphorylation; negative regulation of nitric oxide biosynthetic process; negative regulation of acute inflammatory response; defense response to protozoan; T-helper 1 cell lineage commitment; positive regulation of chemokine biosynthetic process; response to ethanol; positive regulation of tyrosine phosphorylation of Stat5 protein; innate immune response in mucosa; positive regulation of T cell differentiation; retina development in camera-type eye; response to cytokine stimulus; B cell differentiation; cellular defense response; immune response; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription factor activity; T-helper 2 cell differentiation; positive regulation of defense response to virus by host; negative regulation of transcription, DNA-dependent; negative regulation of apoptosis
Disease: Stroke, Ischemic
