Single-stranded RNA binding properties of three RNA repair proteins (X, Y, and Z) were investigated. A biotinylated single-stranded RNA was prepared and incubated with the proteins in different combinations as shown below. This was followed by streptavidin pull-down to enrich ssRNA-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 X binds to the ssRNA.
2
Protein Y does not bind to ssRNA.
3
Protein Z enhances the binding of protein X to ssRNA.
4
Protein Z interacts with protein Y but not with protein X.