Major backbone providers worldwide include Level 3 Communications, NTT, GTT, Tata Communications, Telia Carrier, CenturyLink, AT&T, Verizon and T-Mobile. See NAP. THIS DEFINITION IS FOR PERSONAL ...

The sugar-phosphate backbone forms the structural framework of nucleic acids, including DNA and RNA. This backbone is composed of alternating sugar and phosphate groups, and defines directionality ...