Table 1.

Pairwise similarities among extant and reconstructed steroid receptor sequences

	humERα	humERβ	humPR	humGR	humMR	humAR
Lamprey ER	63	60	30	32	30	30
Lamprey PR	29	30	66	58	65	59
Lamprey CR	33	32	60	58	60	58
AncSR1	71	68	35	36	33	33
AncSR2	32	30	77	68	72	67

The percent of identical amino acid sites in the combined DNA- and ligand-binding domains is shown for each pair.