Mitochondrially encoded cytochrome b pseudogene 21 (MTCYBP21)

Mitochondrially encoded cytochrome b pseudogene 21 (MTCYBP21) is classified as a pseudogene related to the functional MT-CYB gene, which encodes the cytochrome b subunit of mitochondrial complex III—a core protein involved in mitochondrial electron transport and ATP production[2][1][5][7]. However, as a pseudogene, MTCYBP21 is a non-functional segment of DNA resembling the functional cytochrome b gene but typically does not encode a protein product nor participate in normal biological functions or disease pathogenesis. Pseudogenes such as MTCYBP21 generally arise from duplication or mutation events that render them non-coding, and they are not considered therapeutic targets for drugs or relevant as biomarkers[2][6]. The functional MT-CYB gene and its protein product are associated with mitochondrial disorders and bioenergetics, but the MTCYBP21 pseudogene itself has no known direct biological, therapeutic, or pathological roles. There is no evidence of drugs, mechanisms of action, or disease roles associated with the MTCYBP21 pseudogene[2], and it is not considered a clinical biomarker. Its nomenclature and classification as a pseudogene indicate it should not be regarded as a molecular drug target. If you are seeking information about the functional cytochrome b protein, refer to “mitochondrially encoded cytochrome b (MT-CYB)” rather than this pseudogene[1][5][7][8].

Other names

MT-CYB pseudogene 21MTCYBP21mitochondrially encoded cytochrome b pseudogene 21