Human/Mouse/Rat HSP90 beta Antibody

HSP90 is a composite name for a large group of Heat Shock Proteins whose molecular weights average 90 kDa. HSPs function primarily as a molecular chaperone, facilitating the folding of other cellular proteins, preventing protein aggregation, or targeting improperly folded proteins to specific degradative pathways. HSP90 is a central component in a number of basic cellular processes including hormone signaling and cell cycle control. HSP90 is ubiquitously expressed, highly conserved and accounts for 1-2% of the total cellular protein. Recently introduced, standardized nomenclature has divided the 17 identified HSP90 genes into three related and one unrelated classes, HSP90AA, HSP90AB, HSP90BB, and TRAP, respectively. Eukaryotic cells have two principal isoforms of HSP90. The antibody described here reacts with the constitutively expressed, 724 amino acid, HSP90AB1-isoform 1 (also known as HSP90 beta, HSP90B, HSPCB, HSPC2, and HSP89 beta). The inducible form, HSP90AA1, is a 737 amino acid protein (also known as HSP90 alpha, HSP90A, HSPC1, HSPCA, HSP89 alpha and LAP2). HSP90AB1-1 and HSP90AA share 90% identity.