Fig. 4. Nv-GATA. Phylogenetic analysis and expression. (A) Alignment of 80 amino acids from various GATA transcription factors spanning a central C2C2 zinc finger motif. (B) Phylogeny of GATA sequences. The tree was constructed and labeled as in Fig. 3. Sequences included in the analysis are: CG10278-PA (hypothetical protein), Drosophila, residues 514-595; GATA, Nematostella, residues 248-321; GATA-1 (GATA binding protein 1), Homo, residues 235-316; GATA-2, Homo, residues 326-406; GATA-3, Homo, residues 294-373; GATA-4, Homo, residues 193-273; GATA-5, Homo, residues 221-300; GATA-6, Homo, residues 274-356; grain, Drosophila, residues 292-378; MGC2306 (hypothetical protein), Homo, residues 326-407; pannier, Drosophila, residues 148-224; serpent, Drosophila, residues 451-535; TRPS1, Homo, residues 873-959. (C-H) Expression of Nv-GATA. (C,D) Scattered cells express Nv-GATA at the blastula stage. Nv-GATA-expressing cells appear to move into the blastocoel (arrows). (E,F) At gastrulae stages expression is confined to endodermal cells. In the late planula (G) and early polyp (F) stages, ectodermal cells at the base of the developing tentacles also express Nv-GATA. Asterisks indicate the site of the mouth. end, endoderm; ect, ectoderm; tn, tentacles.