Regulators on Friday shut banks in Georgia, Michigan, Minnesota, Missouri, and California, bringing the number of bank failures this year to 120 amid the struggling economy and a cascade of defaults on loans.

The Federal Deposit Insurance Corp. took over United Commercial Bank in San Francisco, with $11.2 billion in assets and $7.5 billion in deposits. East West Bancorp Inc., parent company of East West Bank based in Pasadena, Calif., is buying all of the deposits and most of the failed bank's assets.

The FDIC also closed United Security Bank, based in Sparta, Ga., with $157 million in assets and $150 million in deposits; Home Federal Savings Bank in Detroit, with $14.9 million in assets and $12.8 million in deposits; Prosperan Bank, based in Oakdale, Minn., with $199.5 million in assets and $175.6 million in deposits; and Gateway Bank in St. Louis, with $27.7 million in assets and $27.9 million in deposits.

Ameris Bank, based in Moultrie, Ga., agreed to assume the assets and deposits of United Security,