Abstract
Two electrophoretically distinct protein subunits were found in Mayaro virus, a group A arbovirus. In addition, the cytoplasm of L-929 cells infected with Mayaro virus contained five new proteins, two of which were identified as virus structural proteins. All five new proteins were present by 3 hr after infection. The slower migrating virus structural protein stimulated the production of virus-neutralizing antibody.
* Present address: Department of Microbiology, University of Pennsylvania, School of Medicine, Philadelphia, Pennsylvania 19104.