Enables histone binding activity. Acts upstream of or within histone exchange. Predicted to be located in cytosol and nucleoplasm. Is expressed in several structures, including alimentary system; branchial arch; central nervous system; extraembryonic component; and genitourinary system. Used to study polycystic kidney disease and pulmonary emphysema. Orthologous to human PTMA (prothymosin alpha). [provided by Alliance of Genome Resources, Apr 2022]