Keywords: Telomere quadruplex.jpg en Crystal structure of parallel quadruplexes from human telomeric DNA The DNA strand circles the bases that stack together in the center around a co-ordinated metal ion Carbon is shown in white oxygen in red nitrogen in blue and phosphorus in yellow Hydrogens are omitted for clarity http //ndbserver rutgers edu/atlas/xray/structures/U/ud0017/ud0017 html Produced from NDB ID UD0017 user TimVickers own date File Telomere quadruplex without fog jpg Human chromosomes Telomeres |