Table 2.

Summary of reciprocal purifications results.

Bait	Prey	In bait fraction	In prey fraction	Bait	Prey	In bait fraction	In prey fraction
MAX	L3MBTL2	Chr	Sol	RBPJ	L3MBTL2	Chr	Sol
MAX	E2F6	Chr	Chr	RBPJ	KDM1	Chr	Chr
MAX	FOXK2	Chr	Chr	RBPJ	FBXO42	Chr/Sol	Chr/Sol
NFATC1	JUN	Chr	Chr	CREB1	ATF1	Chr/Sol	Chr/Sol
NFATC1	HOXD13	Chr	Chr	CREB1	HMGA1	Chr	N
NFATC1	CREB1	Chr	Chr	CREB1	ZNF131	Chr	N
NFATC1	ATF3	Chr	Chr	CREB1	NFIX	Chr	Chr
NFATC1	ATF1	Chr	Chr	CREB1	NFATC2	Chr	Chr

Reciprocal purifications of 16 interactions identified from MAX, NFATC1, RBPJ and CREB1 purifications were performed with the same TAP/MS protocol. Chromatin and soluble fractions were separated and whether the corresponding baits appeared in the reciprocal purification was indicated by fraction name or “N”.