Adipocyte differentiation involves a metabolic transition from oxidative phosphorylation (OXPHOS) to aerobic glycolysis, allowing preadipocytes to meet the biosynthetic and energetic demands of maturation. Here, we show that nuclear myosin 1 (NM1), a chromatin-associated actomyosin motor, known to control transcription and chromatin accessibility, is required for metabolic homeostasis during adipocyte differentiation. Integrated ATAC-seq and RNA-seq profiling of NM1-deficient mouse embryonic fib...