Anti-silencing factor (ASF) or histone chaperone assits in chromatin assembly and remodeling during replication, transcription activation and gene silencing. ASF cooperates with chromatin assembly factor 1 (CAF-1) to promote replication-dependent chromatin assembly and with histone regulatory homolog A (HIRA) to promote replication-independent assembly.
3D structures of anti-silencing factor
1roc, 1wg3 – yASF – yeast
2idc – yASF/H3
1tey – hASF N terminal – human - NMR
2io5 – hASF + histone H3.1 + histone H4
2hue - yASF + histone H3 + histone H4
4eo5 - yASF + histone H3.2 (mutant) + histone H4 (mutant)
2z3f – yASF + SPCIA1
2i32 – hASF + HIRA
2z34 – hASF N terminal + HIR1
3aad – hASF + transcription initiation factor TFIID
2ygv – yASF + serine/threonine protein kinase RAD53
