RNA, U5F small nuclear 1 (RNU5F-1)

RNU5F-1 encodes the U5F variant of the U5 small nuclear RNA, a non-coding RNA component of the spliceosome complex responsible for catalyzing the removal of introns from pre-mRNA during mRNA maturation[2][3][4][5]. U5 snRNA, including its variants such as U5F, is essential for precise exon alignment and ligation; it interacts via conserved sequence motifs and secondary structures that facilitate RNA and protein binding necessary for the two catalytic steps of splicing[1][2][3]. Studies show RNU5F-1 and closely related variants are functionally assembled into snRNPs and the tri-snRNP complex (U4/U5/U6), participating in the splicing process[2]. Variants of U5 snRNA—including U5F—are present at moderate abundance in human cells and may influence alternative splicing, contributing to transcript diversity[2][3]. While pathogenic mutations in some U5 snRNA genes (e.g., RNU5B-1, RNU5A-1) are associated with rare neurodevelopmental disorders, disease-specific roles for RNU5F-1 have not been described[1]. Key notes: - RNU5F-1 is an snRNA gene variant, not a protein, receptor, or traditional drug target. - It functions as part of the major spliceosome critical for mRNA processing. - No evidence supports its role as a biomarker, drug target, or in direct disease etiology, though the family is essential for cellular function.

Other names

RNU5F-1RNU5FU5F