NTSF5, or N-terminally tagged S-farnesylation 5, is a term that may refer to a specific protein or molecular marker related to post-translational modifications, particularly farnesylation, which is a process that involves the addition of a farnesyl group to a protein. This modification can influence protein localization, function, and interactions within cellular processes. However, as of my last knowledge update in October 2023, there may not be widely recognized or specific information on NTSF5 in scientific literature. Please check the latest resources for the most current information.