Aug 3 (Reuters) - PepsiCo Inc will sell its controlling stake in Tropicana, Naked and other juice brands in North America to private equity firm PAI Partners for $3.3 billion, the Wall Street Journal reported on Tuesday. It will retain a 39% stake in the new joint venture in a deal valued at roughly $4.5 billion, the report here said, citing people familiar with the matter. The beverage giant and PAI did not immediately respond to Reuters requests for comment. Reporting by Uday Sampath in Bengaluru; Editing by Arun Koyyur Our Standards: The Thomson Reuters Trust Principles.