LONDON (AP) — Pfizer Inc. has sought to allay concerns over its proposed $106 billion takeover offer of Anglo-Swedish pharmaceuticals firm AstraZeneca, insisting that its promises will be legally binding.

In a memo Monday to two U.K. parliamentary committees studying its proposed overture, the U.S. drugmaker laid out its vision ahead of its testimony before the science and business committees. Crucially, it sought to ease worries that British jobs will be lost and that the nation’s science base eroded by the potential merger.