The phosphodiester bond is sealed with the help of this enzyme. Which enzyme is responsible for sealing the strands of DNA together and winding them back up?ĭNA ligase plays a role in this process. DNA can be cleaved by topoisomerase at a desired replication site and then ligated by topoisomerase after the process is finished. Untangling supercoils and making room for new DNA strands can be accomplished by using the enzyme topoisomerase. Mechanisms of enzymesThe ligase “paste” the two DNA fragments together to create a longer strand of DNA. What enzyme is required to glue the fragments back together? The polymerase chain reaction (PCR), also known as the polymerase chain reaction, makes use of DNA polymerase molecules to make copies of DNA molecules in test tubes. What does DNA polymerase do?ĭNA replication occurs when a double-stranded DNA molecule is copied into two identical DNA molecules by an enzyme called DNA polymerase.
#SUGAR PHOSPHATE BACKBONE FREE#
What enzyme forms the sugar-phosphate spine of the RNA during transcription?īy using enzymes known as DNA polymers, free nucleotides form new hydrogen bonds with their parent strand’s complementary bases new phosphodiester bonds are created. Adenine and cytosine form a base pair with thymine, and guanine and cytosine form a base pair with each other. What holds the sugar-phosphate backbone?īackbone of PhosphateOne of four bases (adenine, cytosine, guanine, or thymine) is attached to each sugar (T). An enzyme removes the RNA primer, which is then replaced by DNA nucleotides, and a DNA ligase enzyme seals the gaps between the fragments as the synthesis continues. The lagging strand contains the Okazaki fragments. What enzyme glues the nucleotides together along the sugar-phosphate backbone by adding a bond between a sugar and a phosphate? Which enzyme glues the nucleotides together?Īn enzyme that cleaves DNAThe DNA strand repair enzyme that seals up nicks and breaks in the strand. Phosphodiester bonds are the type of bonds in question. Nucleotides are then linked together with sugar-phosphate bonds by the DNA ligase protein. In order to keep the nucleotide attached to the template strand, the bases form hydrogen bonds with one another. Silky Terrier Dog Breed Playing Around What glues the sugar-phosphate backbone together?
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