The left-handed Z-DNA double helix is held together by traditional Watson-Crick base pairs, but unlike righthanded B-DNA, which has major and minor grooves between the twists of its sugar-phosphate ...

When people think of DNA, they visualize a string-like double helix structure. In reality, the DNA double helix in cells is supercoiled and constrained into loops. This supercoiling and looping are ...

Howard Hughes Medical Institute researchers have produced the first detailed images of a protein that performs the crucial task of detecting and repairing broken strands of DNA. The images show that ...

Experiments show how molecules that might have existed in early Earth can come together, with the potential to form DNA precursors. Nagoya University scientists in Japan have demonstrated how DNA-like ...