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Scientists reveal the structure of glutamate transporter in our cells Feb 18 2021 For the first time, researchers have found one of the most important molecular machines in our cells uses a ‘twisting elevator’ mechanism, solving a mystery of how it transports crucial chemical signals from one cell to another. Individual transporter particles captured by the cryo-EM (left), the structure solved by averaging thousands of these individual particles (middle) and a computer simulation of the glutamate transporter in a lipid membrane revealing the pathway for chloride ions (red) (right; image credit, Shashank Pant, University of Illinois at Urbana-Champaign) A University of Sydney-led international team of scientists has revealed the shape of one of the most important molecular machines in our cells – the glutamate transporter – helping to explain how our brain cells communicate with one another. ....
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Credit: Ichia Chen A University of Sydney-led international team of scientists has revealed the shape of one of the most important molecular machines in our cellsthe glutamate transporter, helping to explain how our brain cells communicate with one another. Glutamate transporters are tiny proteins on the surface of all our cells that shut on and off the chemical signals that have a big role in making sure all cell-to-cell talk runs smoothly. They are also involved in nerve signalling, metabolism and learning and memory. The researchers captured the transporters in exquisite detail using cryogenic electron microscopy (cryo-EM), showing they look like a twisted elevator embedded in the cell membrane. ....