US STOCKS-Wall St to open lower as banks offset Berkshire deal

* Berkshire Hathaway to acquire Burlington Northern

* UBS posts qtrly loss; RBS, Lloyds, agree to shake-up

* Two-day FOMC meeting to start

* For up-to-the-minute market news, click [STXNEWS/US]

(Updates prices, adds company and economic news)

By Rodrigo Campos

NEW YORK, Nov 3 (Reuters) - U.S. stock index futures fell on Tuesday as the deal by Warren Buffett's Berkshire Hathaway to buy railroad Burlington Northern failed to offset poor results from Swiss lender UBS and a shake-up at two big British banks.

In its largest-ever acquisition, Berkshire Hathaway Inc (BRKa.N: Quote, Profile, Research) will pay $26 billion for Burlington Northern Santa Fe Corp (BNI.N: Quote, Profile, Research). Buffett said thatrailroads are key for U.S. growth and will blossom as the country grows. For details see [ID:nN03483590].

In premarket trade, Burlington shares surged 29 percent to $98.04. Among its peers, Union Pacific Corp (UNP.N: Quote, Profile, Research) gained 8.1 percent to $59.50 and CSX Corp (CSX.N: Quote, Profile, Research) was up 8.5 percent at $46.50. The iShares Dow Jones Transportation Average ETF (IYT.P: Quote, Profile, Research) climbed 4.6 percent to $67.24.