 the nmr structure of budding yeast chaperone chz1 complexed with histones h2a.z - h2b has been determined . 
 chz1 forms a long irregular chain capped by two short -helices , and uses both positively and negatively charged residues to stabilize the histone dimer . a molecular model that docks chz1 onto the nucleosome has implications for its potential functions . 
Supplementary Material