This family consists of several mammalian hormone-sensitive lipase (HSL) proteins (EC:3.1.1.-). Hormone-sensitive lipase, a key enzyme in fatty acid mobilisation, overall energy homeostasis, and possibly steroidogenesis, is acutely controlled through reversible phosphorylation by catecholamines and insulin [1].

1: Hormone-sensitive lipase: sequence, expression, and chromosomal localization to 19 cent-q13.3. Holm C, Kirchgessner TG, Svenson KL, Fredrikson G, Nilsson S, Miller CG, Shively JE, Heinzmann C, Sparkes RS, Mohandas T, et al.; Science 1988;241:1503-1506. PMID:3420405