RNA, U4 small nuclear 90, pseudogene (RNU4-90P)

**RNU4-90P (RNA, U4 small nuclear 90, pseudogene)** is a *pseudogene* derived from the sequence of the U4 small nuclear RNA (snRNA), a component of the spliceosome machinery in human cells[1]. This pseudogene contains sequence similarity to the functional U4 snRNA gene but has accumulated mutations and structural features—such as perfect direct repeats flanking the sequence—that are hallmarks of processed RNA pseudogenes and suggest a reverse transcription/integration origin[1]. RNU4-90P is not a protein-coding gene, nor is it known to produce a functional RNA product; like other pseudogenes, it is considered genomically inactive and does not encode a functional receptor, enzyme, transporter, or other druggable molecular target[1]. No disease roles, molecular functions, or drug interactions have been documented for RNU4-90P. Because it is a pseudogene, **RNU4-90P is not considered a therapeutic target or biologically functional molecule**; therefore, most structured fields (functions, diseases, drugs, etc.) are not applicable[1]. The entry is “incorrect” as a biomedical target due to its pseudogene status.

Other names

RNU4-90P