Instructions: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
Input: The highly conserved region of U6 snRNA has a structural similarity with the catalytic domain of the negative strand of the satellite RNA of tobacco ring spot virus [ ( - ) sTRSV ] , suggesting that the highly conserved region of U6 snRNA forms the catalytic center .
Output:
U6 snRNA