Mitochondrial ribosomal protein S33 pseudogene 4 (MRPS33P4)

Mitochondrial ribosomal protein S33 pseudogene 4 (MRPS33P4) is classified as a processed pseudogene located in the human genome[3][4][8]. It is a non-functional genomic sequence related to the functional gene *MRPS33*, which encodes a protein (28S ribosomal protein S33, mitochondrial) involved in mitochondrial translation[5][7][9]. Unlike the functional MRPS33 gene, MRPS33P4 does not produce a functional protein product and is not involved in any known biological process, molecular pathway, or disease state[3][4]. Pseudogenes such as MRPS33P4 can have regulatory roles at the RNA level in rare cases (e.g., acting as competitive endogenous RNAs to regulate their cognate protein-coding genes), but such functionality has not been demonstrated for this specific pseudogene[6]. MRPS33P4 is not considered a therapeutic target, does not function as a receptor, enzyme, transporter, or transcription factor, and has no known interacting drugs, biomarker use, or safety/therapeutic considerations[3][4]. **Note:** - This entry is a *pseudogene*, not an active molecular target or protein, so it is typically not regarded as a drug discovery or therapeutic target. - No evidence of alternative names, roles in human disease, drug interactions, or established biomarker or safety issues was found in current scientific sources. - The reference functional gene is *mitochondrial ribosomal protein S33* (MRPS33), not the pseudogene MRPS33P4[5][7].