A methanogen hydrolase reveals the structure of archaeal peptidoglycan.
ArmA, a glycosyl hydrolase from Methanobrevibacter smithii, uncovers a novel archaeal peptidoglycan structure, challenging 50 years of assumptions about archaeal cell walls.
- Why it matters: Understanding archaeal peptidoglycan is crucial because it influences cell division, ecology, and potential biotechnological applications, yet it has remained poorly characterized due to limited tools.
- What they did: Researchers identified and characterized ArmA, which specifically digests archaeal PG, revealing an unexpected glycan backbone with a new sugar, N-acetylarmosamine, and its role in cell division across diverse methanogens.
- The result: This discovery revises the model of archaeal PG architecture, provides a vital biochemical tool, and opens new possibilities for targeted interventions in methanogen-related processes.