Shearman & Sterling, which scored a big victory Monday for shareholders of defunct Russian energy giant Yukos, has teamed up with Perkins Coie to advise online property website Zillow on its $3.5 billion acquisition of rival Trulia.

The all-stock deal, also announced Monday, saw Trulia tap Goodwin Procter and Wilson Sonini Goodrich & Rosati for outside counsel on its proposed sale to Zillow. The transaction will make Seattle-based Zillow the largest company in the online real estate advertising and listing space.