The observed improvement in the stability of TvL may be due to the combined action of a reduced molecular mobility and an improved conformational stabilization of the enzyme resulting from the multi-point attachment of TvL to the fGO layers. In other words, the large surface area of the fGO sheets, as well as the formation of stable covalent bonds between the fGO and TvL seem to protect the conformational state of TvL, resulting in stabilization of the protein molecules against thermal denaturation. The beneficial effect of the fGO sheets for TvL stabilization increases as the number of fGO-TvL layers grows, indicating that enzyme-graphene oxide nanoassemblies can be successfully used as effective supports where enzymes are protected from thermal inactivation.