Calgranulin A, also known as MRP-8 and S100A8 is a member of the S100 family of proteins containing 2 EF hand (alpha helix, turn, alpha helix structure) calcium binding motifs. S100 proteins are localized in the cytoplasm and /or nucleus of a wide range of cells and are involved in the regulation of a number of cellular processes such as cell cycle progression and differentiation. MRP-8 (S100A8) forms a heterodimeric complex with Calgranulin B, (MRP-14, S100A9) in the cytosol of monocyte and neutrophil cell types circulating in peripheral blood. Calgranulin A is found in elevated levels in the serum of cystic fibrosis cases and is also expressed in the skin of patients with psoriasis, eczematous dermatitis and squamous cell carcinoma.Synonyms: CAGA, CFAG, Calprotectin L1L subunit, Cystic fibrosis antigen, Leukocyte L1 complex light chain, MRP-8, Migration inhibitory factor-related protein 8, S100 calcium-binding protein A8, S100-A8, Urinary stone protein band A