CCL23
Function
Shows chemotactic activity for monocytes, resting T-lymphocytes, and neutrophils, but not for activated lymphocytes. Inhibits proliferation of myeloid progenitor cells in colony formation assays. This protein can bind heparin. Binds CCR1. CCL23(19-99), CCL23(22-99), CCL23(27-99), CCL23(30-99) are more potent chemoattractants than CCL23.
Post-translational modifications
The N-terminal is proteolytically cleaved by proteases associated with inflammatory responses. The processed forms, CCL23(19-99), CCL23(22-99), CCL23(27-99) and CCL23(30-99) exhibit increase in CCR1-mediated signaling and chemotaxis assays in vitro.
Sequence Similarities
Belongs to the intercrine beta (chemokine CC) family.
Tissue Specificity
High levels in adult lung, liver, skeletal muscle and pancreas. Moderate levels in fetal liver, adult bone marrow and placenta. The short form is the major species and the longer form was detected only in very low abundance. CCL23(19-99), CCL23(22-99), CCL23(27-99), CCL23(30-99) are found in high levels in synovial fluids from rheumatoid patients.
Cellular localization
- Secreted
Alternative names
MIP3, MPIF1, SCYA23, CCL23, C-C motif chemokine 23, CK-beta-8, Macrophage inflammatory protein 3, Myeloid progenitor inhibitory factor 1, Small-inducible cytokine A23, CKB-8, MIP-3, MPIF-1