LMP2A and LMP2B promote tyrosine phosphorylation of FAK and other proteins at sites of focal adhesion. Neo control and LMP2A-and LMP2B-expressing SCC12F cells were serum starved, recovered as single cells, and plated onto fibronectin-coated slides. Sixty minutes after plating, the cells were fixed and stained with antibodies to vinculin, FAK397, phosphotyrosine, and LMP2. Bar, 20 μm.