A 24-year-old woman comes to the office due to a persistent facial rash. The patient easily develops "sunburns" after sun exposure and her fingers "turn blue" in cold weather. She has also felt more fatigued than usual. Physical examination shows a facial rash in a butterfly distribution that spares the nasolabial folds. Laboratory studies reveal several types of autoantibodies directed against components of the cell nucleus. One specific antibody targets proteins complexed with small nuclear ribonucleic acid. These protein-ribonucleic acid complexes are most likely involved in which of the following cellular functions?
A.Aiding mRNA in exiting the nucleus
B.Allowing proper functioning of DNA ligase
C.Charging tRNA with amino acids
D.Polyadenylation of RNA transcripts
E.Removal of introns from RNA transcripts
F.Synthesizing Okazaki fragments