<Tr> <Td_colspan="2"> crystal structure of rb69 gp43 in complex with dna containing thymine glycol </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Th> Symbol </Th> <Td> DNA_pol_B </Td> </Tr> <Tr> <Th> Pfam </Th> <Td> PF00136 </Td> </Tr>

Which of these is not a function of dna polymerase