Table 3. Dissociation constants of T-STAR and Sam68 STAR and QUA1-KH domains to SELEX-derived AU-rich RNAs determined by fluorescence polarization.

Kd (μM)	T-STAR		Sam68
	STAR	QUA1-KH	STAR	QUA1-KH
G8.5	11.7	8.1	36.1	10.3
G7.1	5.4	4.5	8.2	4.3
SRE-4	8.5	9.4	65.7	19.1
Nrxn2	1.1	1.7	3.7	2.2

G8.5: CUGGGUGACACACUAGCUAUAGCAUUAAAAGACCGAGCAAGU.

G7.1: UCCGGAUUGGCCUAAAUAGAUGCGCGAUAAUAAUAGAGUA.

SRE-4: UUUGGGGGUUCAAUAAAAAUUUUCACUAUCCUAUUAACAGUUCCGCCGCUCC.

Nrxn2: CCCAAUUAACUAACUAACUAACUUUAAAA.