Thymidine triphosphate (TTP) is a nucleotide that plays a crucial role in the synthesis of DNA. It consists of a thymine base, a deoxyribose sugar, and three phosphate groups. TTP is one of the four building blocks of DNA, along with adenine triphosphate (ATP), cytidine triphosphate (CTP), and guanosine triphosphate (GTP). During DNA replication, TTP is incorporated into the growing DNA strand, pairing with adenine. The energy stored in its phosphate bonds is essential for the formation of the DNA backbone, ensuring accurate genetic information is passed on during cell division.