Cytochrome b5 type A pseudogene 5 (CYB5AP5)

Cytochrome b5 type A pseudogene 5 (CYB5AP5) is a human pseudogene related to the cytochrome b5 family but is non-functional in terms of protein-coding. Pseudogenes like CYB5AP5 are generally regarded as genomic remnants of once-functional genes that have accumulated mutations preventing the synthesis of a functional protein. Recent research indicates that while many pseudogenes remain transcriptionally inactive, others may generate regulatory RNAs capable of influencing the expression of their cognate protein-coding "parent" genes via several mechanisms, including microRNA sponging or resource competition for the mRNA machinery[4][6]. There is no direct evidence of CYB5AP5 having a biologically significant role, involvement in disease, or utility as a therapeutic target or biomarker at this time[1][2]. The parent functional gene, CYB5A, encodes a membrane-bound hemoprotein involved in electron transport, but this function is not shared by CYB5AP5[3][5]. CYB5AP5 should not be confused with CYB5A, the gene for cytochrome b5 type A, which is a functional electron transport protein involved in drug metabolism and lipid biosynthesis[3][5][7]. The pseudogene is not a conventional therapeutic target as it does not produce a protein product and has no established role in human disease or pharmacology[1][2].

Other names

cytochrome b5 type A (microsomal) pseudogene 5CYB5P5