Growth Regulated Protein alpha (GRO alpha ), also known as CXCL1, is a chemokine thought to have mitogenic properties and chemoattract neutrophils. Secreted by macrophages, epithelial cells, neutrophils and melanomas, GRO alpha signals through chemokine receptor, CXCR2, and has been implicated in the processes of spinal cord formation, inflammation, angiogenesis, tumorigenesis, and wound healing. Recombinant GRO alpha is a non-glycosylated Protein, containing 73 amino acids, with a molecular weight of 7.9 kDa.