AR	asymmetry ratio
bHLH	Basic helix–loop–helix factors
BS	binding site
bZIP	Basic leucine zipper factors
C2H2 ZF	C2H2 zinc finger factors
CE	composite element
DBD	DNA-binding domain
ERR	expected recognition rate
NR	Nuclear receptors with C4 zinc fingers
PWM	position weight matrix
RHR	Rel homology region factors
STAT	STAT domain factors
TAR	threshold for asymmetry ratio
TF	transcription factor
TFBS	transcription factor binding site
Tryp C	Tryptophan cluster factors