The results reveal that in ps DNA these distances are between 5 and 10% longer than in aps DNA when the labeled DNA segment is located near the center of the double helix. The interspin distance in ps ...

Most proteins are left-handed, but scientists have found an ancient molecule that works in both mirror-image forms.

∥ ⊥ ∥ Department of Biochemistry and Molecular Biology, School of Medicine, and ⊥ Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901, United States ...