Address how cooperative binding contributes to SSB function during D.pdf
0 likes18 views
The document discusses the role of single-strand DNA-binding protein (ssb) in DNA replication, specifically how cooperative binding enhances its function. Ssb, a 178 amino acid protein found in E. coli, prevents the reannealing of separated DNA strands during replication, recombination, and repair. Cooperative binding among ssb proteins enables continuous DNA synthesis by facilitating the action of DNA polymerase.
1 of 1
Download to read offline
More Related Content
Similar to Address how cooperative binding contributes to SSB function during D.pdf (20)
Ad
More from michardsonkhaicarr37 (20)
Ad
Recently uploaded (20)
Address how cooperative binding contributes to SSB function during D.pdf
- 1. Address how cooperative binding contributes to SSB function during DNA replication. What is the advantage of such binding for SSB activity? Solution Single-strand DNA-binding protein (SSB) is 178 amino acids long protein, found in E. coli, that binds to single-stranded poly nucleotide strand of double helix DNA and prevents reannealing of poly nucleotide strands and allow various aspects of DNA metabolism: replication, recombination, and repair. As in E. Coli, the DNA replication initiate at Ori site. During initiation, the helicase opens the double stranded DNA into single poly nucleotide strands, eventually the SSB proteins bind to the seperated poly nucleotide strands and prevents reannealing and facilitates sliding of DNA polymerase and DNA replication. Here binding of single SSB promotes massive binding of SSB proteins to the poly nucleotide strand, called cooperative binding. Such cooperative binding facilitates the uninterupted synthesis of new DNA molecules.