Model of FOG-1–GATA factor interaction requirements during
megakaryocyte development. During an early stage of megakaryocyte
commitment, FOG-1 requires an interaction with either GATA-1 or GATA-2.
During a later stage, FOG-1 specifically requires an interaction with
GATA-1. GATA-2 also plays a role in proliferation of progenitor cells
(indicated by looping arrow). F1, FOG-1; G1, GATA-1; G2, GATA-2.