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Details for messenger / hormone: fractalkine

EndoNet ID: ENH00578

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  • small-inducible cytokine D1
  • C-X3-C motif chemokine 1
  • fractalkine
  • CX3CL1
  • neurotactin
  • CX3C membrane-anchored chemokine
  • FKN
  • small inducible cytokine D1
  • NTT
  • SCYD1

General information

  • The soluble form is chemotactic for T-cells and monocytes, but not for neutrophils. [1]
  • This molecule can exist in two forms: either membrane-anchored or as a shed 95K glycoprotein. The soluble CX3C chemokine has potent chemoattractant activity for T cells and monocytes, and the cell-surface-bound protein, which is induced on activated primary endothelial cells, promotes strong adhesion of those leukocytes. [2]
  • Tumor necrosis factor-alpha-converting enzyme (ADAM17) mediates the cleavage and shedding of fractalkine (CX3CL1). [3]
  • Neurotactin is a membrane-anchored chemokine upregulated in brain inflammation. [4]
  • Fractalkine is a CX3C-type chemokine that induces chemotaxis of monocytes and cytotoxic T cells. [5]


Hormone function

  • immune response
    • activation

    Chemical classification

    Links to other resources

    UniProt P78423
    Ensembl ENST00000006053
    KEGG hsa:6376
    • Anatomical structure: small_intestine

    • Anatomical structure: testis

    • Anatomical structure: colon

    • Anatomical structure: heart

    • Anatomical structure: lung

    • Anatomical structure: skeleton_muscle

    • Anatomical structure: kidney

    • Anatomical structure: pancreas

    • Anatomical structure: prostate

    • Anatomical structure: hippocampus

    • Anatomical structure: isocortex

    • Anatomical structure: thalamus


    astrocyte Present
    brain Present
    cerebellar cortex Present
    cerebral cortex Present
    continuous vascular endothelial cell of blood vessels and lymphatics Present
    • regulation of angiogenesis
    hippocampus Present
    keratinocyte Present
    killer cell Present
    lung Present
    lymphoid tissue Present
    macrophage Present
    microglial cell in central nervous system Present
    monocyte Present
    • ectodomain shedding
    neuron Present
    neutrophil granulocyte Present
    • ectodomain shedding
    T-lymphocyte Present
    • ectodomain shedding
    uterus Present