Chromatin assembly factor 1 (CAF-1) is a histone H3-H4 chaperone that deposits newly synthesized histone (H3-H4)2 tetramers during nucleosome assembly. CAF-1 complex is composed of several subunits. This entry represents the C-terminal domain of subunit Cac1 that adopts a winged helix fold and binds to DNA in a sequence-independent manner [1]. This domain was also found to mediate the (H3-H4)2 tetramerisation [2].

1: A DNA binding winged helix domain in CAF-1 functions with PCNA to stabilize CAF-1 at replication forks. Zhang K, Gao Y, Li J, Burgess R, Han J, Liang H, Zhang Z, Liu Y; Nucleic Acids Res. 2016;44:5083-5094. PMID:26908650

2: The Cac1 subunit of histone chaperone CAF-1 organizes CAF-1-H3/H4 architecture and tetramerizes histones. Liu WH, Roemer SC, Zhou Y, Shen ZJ, Dennehey BK, Balsbaugh JL, Liddle JC, Nemkov T, Ahn NG, Hansen KC, Tyler JK, Churchill ME; Elife. 2016; [Epub ahead of print] PMID:27690308