Transcriptional activities of yes-associated protein (YAP) isoforms were compared.
YAP’s WW domains and leucine zipper motif both contribute to transcriptional activity.
Absence of YAP’s second WW domain weakens transcriptional potency.
Disruption of YAP’s leucine zipper weakens the transactivation domain (TAD).
Potency of the TAD from YAP α, β, γ, δ isoforms is cell-context dependent.