Protein A is a surface protein that originally found in cell wall of bacteria staphylococcus aureus. It has many applications in biopharmaceutical and biochemical industry especially in monoclonal antibodies purification. Protein A Resin Market is a chromatographic medium that is used to analyse and separate the antibodies. Because of its ability to bind immunoglobulins protein A resin is also used in immunological research. Nowadays protein A resins produced mostly using recombinant DNA technology in Escherichia coli. Companies in Protein A Resin market are investing in research and development to gain the competitive advantage. Geographic expansion, new product development and collaborations are major strategies adopted by the key market players. For instance, In February 2016, German life sciences company Atoll acquired by Repligen for $22.5 Mn. This acquisition will expand Repligens chromatography column business and further diversifying its business supply of protein A ligands. Similarly, in February 2016, Repligen Corporation has extended a long term supply agreement with GE Healthcare through 2019 for Protein A ligands manufacturing at its facility in Lund, Sweden. Furthermore, in 2011, Novasep, a leading supplier of manufacturing solutions to the life sciences industries, launched of AbSolute High Cap, a new generation Protein A media, based on modified silica. In June 2017, Purolite, a chemical manufacturing company collaborated with ChromaTan Corporation to develop a novel protein A bead.