William Lemmer, senior vice president and general counsel of Cameron International Corp., turned to lawyers from Winston & Strawn and Baker Botts for the Houston company’s pending sale of its reciprocating compression division to GE Oil & Gas for about $550 million in cash.

GE Oil & Gas, based in Florence, Italy, is using a team from King & Spalding.

On Jan. 20, the companies announced a definitive agreement for the acquisition. The transaction is expected to close during the third quarter, subject to regulatory approval. The division provides high-speed reciprocating compression equipment and aftermarket parts and services for the oil and gas production, gas processing, gas distribution and independent power industries.

After the deal closes, the division will become part of GE Oil & Gas’ downstream technology-solution business

At Cameron, Brad Eastman, deputy general counsel, is assisting Lemmer on the deal.

The Winston & Strawn team includes corporate partner Richard Wynne and associates Garrett Johnston and Adam Wilhite, all of Houston, as well as Chicago-based tax partner Roger Lucas.

The Baker Botts lawyers for Cameron include partner Sean Boland and associate Ryan Foley, both of Washington, D.C., and associate David Cardwell of Brussels.

M&A partner John Keffer and counsel Todd Amdor, both of Houston, lead the King & Spalding team representing GE Oil & Gas. According to Keffer, while GE is headquartered in Italy, it has major operations in Houston and the company managed the deal in Houston.

Others at King & Spalding representing GE Oil & Gas include global transactions associate Jason Nasra of Houston; benefits partner Ken Raskin of New York City; environmental partner Les Oakes of Atlanta; tax partner Abraham “Hap” Shashy and associate Sara Silverstein, both of Washington, D.C., and associate Emily Meyer of New York; intellectual property partner Scott Petty and associate Kent Jordan, both of Atlanta; and real estate partner Peter Oxman of Houston.