Standard&Poor's Ratings Services assigned its 'AA/A-1+' and 'AA' ratings to Deutsche Bank Securities, Inc. short puttable exempt adjustable receipts (SPEARs) and long inverse floating exempt receipts (LIFERs) respectively, issued under trust series DB-280, relating to the City of San Antonio, Texas Electric and Gas Systems revenue and refunding bonds, new series 2007. The long-term component of the SPEARs rating is based on the 'AA' rated City of San Antonio, Texas Electric and Gas Systems revenue and refunding bonds, new series 2007. The short-term component of the rating is based on a standby purchase agreement (SPA) provided by Deutsche Bank AG ('A-1+'). The rating on the LIFERs is based on the 'AA' rated City of San Antonio, Texas Electric