Keratin 19 pseudogene 2 (KRT19P2)

Keratin 19 pseudogene 2 (KRT19P2) is a processed pseudogene related to the canonical keratin 19 gene (KRT19). Pseudogenes are genomic DNA sequences similar to known genes but typically nonfunctional due to the absence of regulatory elements or critical coding regions[3]. Multiple processed pseudogenes for keratin 19 exist; none contain an intact reading frame or produce functional protein[3][6]. While KRT19 is an important epithelial cytoskeletal protein and diagnostic biomarker, its pseudogenes, including KRT19P2, have no reported biological function and are not considered therapeutic targets. Pseudogene sequences can occasionally interfere with genetic assays if they share high identity with the functional gene[6], but their clinical relevance is negligible. Additional context: - Functional KRT19 encodes for Keratin, type I cytoskeletal 19 (K19), a true protein-coding gene important in epithelial cell structure and disease biomarker research[1][5]. - The presence of pseudogenes such as KRT19P2 is noted in genomic annotation studies, and although these sequences may be amplified unintentionally in PCR assays[6], not themselves functional or drug targets. - The nomenclature confusion ("KRT19P2", "KRT19P5") stems from the existence of multiple processed pseudogenes for keratin 19, none of which have intact reading frames or known function[3]. Summary: KRT19P2 represents a non-functional pseudogene of keratin 19. It should not be considered a therapeutic target or biological marker but should be recognized for its potential to create confusion in molecular assays due to sequence similarity with KRT19.

Other names

keratin 19 pseudogene 5KRT19P5KRT19P2