Gut microbial β-Glucuronidase: A key regulator of endobiotic homeostasis

Previous studies have explored the role of the gut microbiota in regulating endobiotic homeostasis, but the precise mechanisms remain unclear. In this issue of Cell Host & Microbe, Simpson et al. identified two predominant subtypes of gut microbial β-Glucuronidase (gmGUS) that can reactivate hormones and neurotransmitters to regulate endobiotic homeostasis.