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DNA Replication Enzymes
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helicase
opens the double helix at replication forks by disrupting the hydrogen bonds that hold the two strands together
single-strand bonding protein (SSB)
binds to single strands of DNA and prevents the helix from reforming before it can be used as a template for replication
topoisomerase
breaks one or both DNA strands, preventing excessive coiling during replication, and then rejoins them in a more relaxed configuration
DNA polymerase
links nucleotide subunits to form a new DNA strand from a DNA template
DNA primase
synthesizes short RNA primers on the lagging strand; begins replication of the leading strand
DNA ligase
links Okazaki fragments by joining the 3' end of the new DNA fragment to the 5' end of the adjoining DNA
Author
Icescorcher
ID
315261
Card Set
DNA Replication Enzymes
Description
Chemistry
Updated
2016-02-03T21:28:39Z
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