Final answer:
Approximately 1-2% of all protein-coding genes are RDBP (RNA-binding proteins).
Step-by-step explanation:
In the human genome, it is estimated that around 1-2% of all protein-coding genes are represented by RDBP (RNA-binding proteins).
In addition to RBPs, microRNAs (miRNAs) can also bind to the RNA, affecting the stability of the molecule.
It is important to note that the exact percentage of protein-coding genes that are RDBP may vary depending on the specific context and organisms studied.