Hsp70 is a type of heat shock protein that plays a crucial role in cellular stress responses. It helps protect cells from damage caused by heat, toxins, and other stressors by assisting in the proper folding of proteins and preventing their aggregation. This protein is found in all living organisms and is essential for maintaining cellular function. Hsp70 also aids in the transport of proteins across cellular membranes and assists in the degradation of misfolded proteins, ensuring that cells remain healthy and functional under stress conditions.