Proteins Required For Dna Synthesis Biology Freeman Table 14.1

Front 1

Helicase

Back 1

catalyzes the breaking of hydrogen bonds between base pairs to open the double helix

Front 2

single strand DNA binding proteins

Back 2

stabilizes single stranded DNA

Front 3

Topoisomerase

Back 3

breaks and rejoins the DNA double helix to relieve twisting forces caused by the opening of the helix

Front 4

primase

Back 4

catalyzes the synthesis of the RNA primer

Front 5

DNA polymerase III

Back 5

extends the leading strand

Front 6

sliding clamp

Back 6

holds DNA polymerase in place during strand extension

Front 7

primase

Back 7

catalyzes the synthesis of the RNA primer on an Okazaki fragment

Front 8

sliding clamp

Back 8

holds DNA polymerase in place during strand extension

Front 9

DNA polymerase I

Back 9

removes the RNA primer and replaces it with DNA

Front 10

DNA ligase

Back 10

catalyzes the joining of Okazaki fragments into a continuous strand

Front 11

DNA polymerase III

Back 11

extends an Okazaki fragment