Table 1. Amino acid conservation in the ERbeta ligand binding domains.

	Hs ERβ	Mm ERβ	Mu ERβ	Mu ERγ	Ca ERβ1	Ca ERβ2	Ol ERβ2	Ol ERβ1	Fr ERβ2	Fr ERβ1	Dr ERβ2	Dr ERβ1
Dr ERβ1	72%	71%	82%	73%	74%	95%	72%	100%	74%	79%	76%	100%
Dr ERβ2	71%	69%	77%	86%	93%	76%	89%	76%	87%	75%	100%	76%

Calculations of the homologies in the ligand binding domains. Zebrafish and four other fish species were compared with the corresponding regions in human and mouse. Dr, zebrafish; Ca, goldfish; Fr, pufferfish; Mu, Atlantic croaker; Ol, medaka; Mm, house mouse; Hs, human.