Global Profiling of Lysine Ubiquitylation in the Human Hypothalamus

The human hypothalamus is crucial in regulating metabolism, stress response, and circadian rhythms. Dysfunctions in these processes are linked to various disorders, including Alzheimer's disease, obesity, and sleep disorders. Although ubiquitylation is a key protein modification that affects cellular function, its specific role within the hypothalamus remains poorly understood. This study provides the first detailed profile of lysine ubiquitylation in the human hypothalamus, identifying over 21,000 ubiquitinated sites on more than 5000 proteins. The findings provide valuable insights into the ubiquitylation landscape, highlighting key ubiquitinated proteins and pathways that may be involved in neuroendocrine diseases. This research provides a foundation for future research and highlights the potential of ubiquitylation as a therapeutic target for neurological and endocrine disorders.