ASF1A

This gene encodes a member of the H3/H4 family of histone chaperone proteins and is similar to the anti-silencing function-1 gene in yeast. The protein is a key component of a histone donor complex that functions in nucleosome assembly. It interacts with histones H3 and H4, and functions together with a chromatin assembly factor during DNA replication and repair. [provided by RefSeq, Jul 2008]

Anti-Silencing Function 1A Histone Chaperone

Histone chaperone that facilitates histone deposition and histone exchange and removal during nucleosome assembly and disassembly. Cooperates with chromatin assembly factor 1 (CAF-1) to promote replication-dependent chromatin assembly and with HIRA to promote replication-independent chromatin assembly. Required for the formation of senescence-associated heterochromatin foci (SAHF) and efficient senescence-associated cell cycle exit.

DNA repair Source: MGI
DNA replication-dependent nucleosome assembly Source: UniProtKB
DNA replication-independent nucleosome assembly Source: UniProtKB
Muscle cell differentiation Source: Ensembl
Negative regulation of chromatin silencing Source: UniProtKB
Nucleosome assembly Source: MGI
Osteoblast differentiation Source: Ensembl

Nucleus

Phosphorylated by TLK1 and TLK2. Highly phosphorylated in S-phase and at lower levels in M-phase. TLK2-mediated phosphorylation at Ser-192 prevents proteasome-dependent degradation.