Lymphotactin (XCL1) Human Active Protein

This antimicrobial gene encodes a member of the chemokine superfamily. Chemokines function in inflammatory and immunological responses, inducing leukocyte migration and activation. The encoded protein is a member of the C-chemokine subfamily, retaining only two of four cysteines conserved in other chemokines, and is thought to be specifically chemotactic for T cells. This gene and a closely related family member are located on the long arm of chromosome 1. [provided by RefSeq, Sep 2014]

XCL1: Chemotactic activity for lymphocytes but not for monocytes or neutrophils. Belongs to the intercrine gamma family.

Protein type: Secreted, signal peptide; Motility/polarity/chemotaxis; Secreted

Chromosomal Location of Human Ortholog: 1q23

Cellular Component: extracellular space; extracellular region

Molecular Function: protein homodimerization activity; chemokine activity; chemokine receptor binding

Biological Process: neutrophil chemotaxis; negative regulation of T-helper 1 type immune response; positive regulation of T cell mediated cytotoxicity; response to virus; negative regulation of transcription factor activity; positive regulation of T cell cytokine production; positive regulation of leukocyte chemotaxis; negative regulation of T cell cytokine production; signal transduction; positive regulation of interleukin-10 production; negative regulation of interleukin-2 production; cell-cell signaling; negative regulation of interferon-gamma production; release of sequestered calcium ion into cytosol; regulation of inflammatory response; immune response; positive regulation of release of sequestered calcium ion into cytosol; negative regulation of transcription, DNA-dependent