human papillomavirus E5 central sequence-like 1 (ENSG00000280920)

The **human papillomavirus E5 central sequence-like 1** gene (ENSG00000280920) is annotated in genome databases based on sequence similarity to the E5 protein of human papillomavirus (HPV), a small hydrophobic transmembrane protein that has weak transforming activity in vitro and plays roles in viral immune evasion and cell proliferation[1][2][3]. Unlike validated HPV E5 proteins, which have roles in viral pathogenesis (such as downmodulation of MHC class I and weak oncogenesis in cooperation with E6/E7)[1][2], the "central sequence-like 1" annotation refers to a computationally predicted locus in the human genome without experimental evidence of protein expression or function. There is no publication or database entry confirming the existence, expression, subcellular localization, protein function, or clinical relevance of this putative human sequence. Therefore, it is not recognized as a therapeutic target, biomarker, or functional protein relevant to human health. Summary of key points: - The "E5 central sequence-like 1" entry in Ensembl is an uncharacterized, hypothetical gene annotated by sequence similarity, not function or biological relevance[3]. - The genuinely functional E5 protein is found in papillomaviruses, not in humans, and is implicated in viral oncogenesis, immune evasion, and modulation of growth factor signaling[1][2]. - There is no evidence this human locus encodes an expressed or functional protein, nor is it relevant for drug targeting, biomarker development, or disease mechanism[3]. - This is likely a "gene prediction artifact" or annotation error, not a valid target.

Other names

HPE5CSL1