Table 2.

Predicted DNA-binding categories based on the tobacco bHLH domain.

Predicted activity	Predicted motif	Number of AtbHLHs (Toledo-Ortiz)		Number of SlbHLHs		This study
E-box	bHLH	237	74.15%	98	61.63%	241	78.00%
G-box	bHLH	187	60.54%	72	45.28%	191	61.81%
Non-G-box	bHLH	50	13.61%	26	16.35%	50	16.18%
Non-E-box	bHLH	11	7.48%	12	7.55%	45	14.56%
Total		120	81.63%	110	69.18%	286	92.55%
Non-DNA binding	HLH	27	18.37%	49	30.82%	23	7.40%