What factors can change the 3-D structure of a protein and what is this process called?

The 3-D structure of a protein can be altered by several factors, including changes in temperature, pH levels, and the concentration of salts or other ions. These changes can lead to the denaturation of the protein, a process that disrupts its native conformation and can result in loss of function. Additionally, interactions with other molecules, such as ligands or post-translational modifications, can also affect protein structure. This process of altering a protein’s structure is known as protein folding or unfolding, depending on whether it is assuming or losing its functional conformation.