CXCL1, also known as KC and GRO alpha, is a CXC family chemokine that is expressed in fibroblasts, macrophages, and endothelial cells and interacts with CXCR2. CXCL1 is a potent neutrophil attractant and activator. It also promotes angiogenesis by inducing VEGF production by neutrophils. N-terminally truncated CXCL1 demonstrates increased potency in CXCR2 signaling. Mature mouse CXCL1 shares 96% and 64% aa sequence identity with rat and human CXCL1, respectively.
