Single-stranded DNA binding properties of three DNA repair proteins (A, B, and C) were investigated. A biotinylated single-stranded DNA was prepared and incubated with the proteins in different combinations as shown below. This was followed by streptavidin pull-down to enrich ssDNA-bound proteins, which were detected by western blot analyses using specific antibodies.
Which one of the following statements is NOT a correct conclusion from the above study?
1
Protein A binds to the ssDNA.
2
Protein B does not bind to ssDNA.
3
Protein C destabilizes the binding of protein A to ssDNA.
4
Protein C interacts with protein A but not with protein B.