Which protein is primarily responsible for stabilizing single-stranded DNA during replication?

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Multiple Choice

Which protein is primarily responsible for stabilizing single-stranded DNA during replication?

Explanation:
During replication, strands are separated, creating single-stranded DNA that must be protected and kept accessible for synthesis. SSB proteins bind tightly to this exposed ssDNA, coating it to prevent re-annealing and degradation, which keeps the template ready for the polymerase to copy. This stabilization at the replication fork is essential for efficient and accurate DNA synthesis, and these proteins also help coordinate other replication factors as synthesis proceeds. In contrast, ligase seals nicks after synthesis, topoisomerase relieves torsional stress, and helicase unwinds the double helix.

During replication, strands are separated, creating single-stranded DNA that must be protected and kept accessible for synthesis. SSB proteins bind tightly to this exposed ssDNA, coating it to prevent re-annealing and degradation, which keeps the template ready for the polymerase to copy. This stabilization at the replication fork is essential for efficient and accurate DNA synthesis, and these proteins also help coordinate other replication factors as synthesis proceeds. In contrast, ligase seals nicks after synthesis, topoisomerase relieves torsional stress, and helicase unwinds the double helix.

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