AI Insight
Researchers at the Institute of Science and Technology Austria used cryo-electron microscopy to reveal structural details of a molecular gate mechanism that allows large, fully folded proteins to traverse cell membranes without damaging them. The study by Leonid Sazanov and Ziyu Zhao provides new insights into this fundamental cellular process that has been a long-standing question in cell biology. The cryo-EM imaging technique enabled visualization of how this molecular gate operates at the structural level.
Why it matters
Understanding how proteins cross membranes intact is crucial for comprehending basic cellular functions and could have implications for drug delivery systems and biotechnology applications. This knowledge may inform the development of therapeutic strategies that require transporting proteins or other large molecules across cellular barriers.
Understand the Science
How large, fully folded proteins can pass through cell membranes without destroying them has long been one of the open questions in cell biology. Using cryo-electron microscopy (cryo-EM), Leonid Sazanov and Ziyu Zhao at the Institute of Science and Technology Austria (ISTA) have now uncovered new details about a molecular “gate.” Their findings were published in Molecular Cell.
Source: Cryo-EM imaging reveals how a molecular gate lets bulky proteins pass cell membranes intact