Mitochondrially encoded cytochrome b pseudogene 39 (MTCYBP39)

MT-CYB pseudogene 39 (MTCYBP39) is classified as a pseudogene, meaning it is a non-functional segment of DNA that resembles the functional MT-CYB gene but does not encode an active protein product[4]. The canonical MT-CYB gene encodes cytochrome b, a core component of mitochondrial complex III (ubiquinol-cytochrome c reductase), necessary for electron transport and ATP production in mitochondria[1][3][5][6]. In contrast, MTCYBP39 lacks coding potential and functional protein expression. Thus, it does not participate in mitochondrial energy metabolism, electron transfer, or other biological processes and is not considered a therapeutic target, disease gene, or druggable entity. \n\nKey context:\n- MTCYBP39 is a pseudogene, not a functional protein-coding gene[4].\n- It should not be confused with the functional MT-CYB gene, which is a well-characterized target involved in mitochondrial diseases but has a different functional and clinical profile[1][3][5][6].\n- Therapeutic, biomarker, or safety information related to cytochrome b (MT-CYB) does not apply to MTCYBP39, as pseudogenes are nonfunctional, and there is no evidence linking MTCYBP39 to disease, drug action, or clinical relevance[4].\n- The entry is *problematic as a molecular target* because pseudogenes like MTCYBP39 are typically not targeted in drug discovery, and there is no indication that it is a receptor, enzyme, transporter, or other actionable target class[4].\n\nIf searching for a target relevant to mitochondrial metabolism, refer to the canonical MT-CYB gene/protein, not MTCYBP39.

Other names

MT-CYB pseudogene 39MTCYBP39mitochondrially encoded cytochrome b pseudogene 39