mBio02707-20R1-Figure_6 (IMAGE) DOE/Argonne National Laboratory Caption Location of amino acid substitutions on the SARS-CoV-2 spike protein. A mutation in the amino acid Gly614 was the result of one protein, aspartic acid (D), mutating to glycine (G) (purple cell), which may have driven COVID-19's transmissibility rates as it surged through Houston in mid-May. Credit Image by Jason McLellan, University of Texas, Austin. Used by permission of mBio, from the article Usage Restrictions Image by Jason McLellan, University of Texas, Austin. Used by permission of mBio, from the article "Molecular Architecture of Early Dissemination and Massive Second Wave of the SARS-CoV-2 Virus in a Major Metropolitan Area." License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.