The list of genes in clusters obtained using HCNE based analysis in the GRB model.

The homology-based classification is into seven categories: (I) Thyroid Hormone Receptor-like, (II) Retinoid X Receptor-like, (III) Estrogen Receptor-like, (IV) Nerve Growth Factor IB-like, (V) Steroidogenic Factor-like, (VI) Germ Cell Nuclear Factor-like, and (0) Miscellaneous. The functional classification is into nuclear hormone receptors (NHR) and nuclear orphan receptors (NOR).