This family includes the yeast and human ASF1 protein. Theseproteins have histone chaperone activity [1]. ASF1 participatesin both the replication-dependent and replication-independentpathways. The structure three-dimensional has been determinedas a a compact immunoglobulin-like beta sandwich fold topped bythree helical linkers [2]. ASF1 like histone chaperone ASF1_hist_chap