A team led by Freiburg biochemist Prof. Dr. Susana Andrade has characterized a new membrane protein that allows microorganisms to repurpose ammonium transporters (Amts) as receptors. A team led by Freiburg biochemist Prof. Dr. Susana Andrade has characterized a new membrane protein that allows microorganisms to repurpose ammonium transporters (Amts) as receptors. Biochemistry Phys.org – latest science and technology news stories