By Al Yoon Of DOW JONES NEWSWIRES NEW YORK -(Dow Jones)- UBS Securities and Barclays PLC (BCS, BARC.LN) plan to sell $1.1 billion of publicly registered commercial mortgage-backed securities with risk premiums above other recent issues, according to an investor familiar with the deal. The dealers are likely to price the top, AAA-rated 10-year slice at a yield 120 basis points over interest rate swap rates, the investor said. That is 5 basis points wider than a J.P. Morgan Chase & Co. (JPM) CMBS last week, and 15 basis points wider than CMBS sold in March. The dealers will issue the CMBS off a pool of 73 loans totaling $1.33 billion, according to investors. The loans are mostly on an equal mix of retail and office buildings, with a smaller percentage covering hospitality and other types of properties, they said. -By Al Yoon, Dow Jones Newswires; 212-416-3216; albert.yoon@dowjones.com