into 2% w/v SDS (50 mM Tris, pH 6.8). Lysates were separated using
discontinuous SDS-PAGE to resolve proteins of molecular weight <
200 kDa or tris-acetate gels (NuPAGE, Invitrogen) to resolve proteins
of molecular weight > 200 kDa. Antibodies used for immunoblotting
were anti-SMARCAL1 (1/100, D3P5I; Cell Signaling), anti-DAXX (1/1000,
25C12; Cell Signaling), anti-ATRX (1/1000, D1N2E; Cell Signaling),
anti-ATRX (1/100, sc-55584; Santa Cruz Biotechnology), anti-alpha-tubulin
(1/5000, DM1A; Sigma-Aldrich), and anti-GAPDH (1/5000, ab9485; Abcam).