Role of RNA primer: primase Flashcards
1
Q
Why RNA?
A
rna is the starting point
DNA polymerase cannot start new chains
DNA polymerase III can only add nucleotide to the 3’ end of DNA or RNA strand
2
Q
how many base pairs are involved with synthesis of RNA fragments?
A
10 base pairs long
3
Q
what is primosome
A
primase + 6 proteins that unwind DNA, recognize base sequence and initiate replication
4
Q
what happens later in replication involving rna?
A
RNA is removed and replaced with DNA, exonuclease and DNA ligase
