H3.3 histone B pseudogene (H3P43)

The histone H3 family includes several functional variants (notably H3.1, H3.2, and H3.3) that are integral to nucleosome structure and gene regulation in eukaryotic chromatin[1][4]. The protein-coding gene H3-3B (H3.3 histone B) encodes a replication-independent histone variant (H3.3), which is associated with transcriptional activity, chromatin remodeling, and genome stability[1][2][4]. There are, however, multiple pseudogenes (non-coding gene copies) related to H3-3B, and "H3 histone pseudogene 43" appears to refer to such a pseudogene[4]. As a pseudogene, H3P43 does not code for a functional protein product, does not serve as a therapeutic target, and is not implicated in regulatory, enzymatic, or receptor-like roles in cell biology. Pseudogenes are sometimes transcribed, but generally lack a direct biological function or clinical significance unless shown otherwise. Key context and supporting details: - True functional H3.3 (encoded by H3-3B and H3-3A in humans) is involved in transcriptional regulation, chromatin remodeling, DNA repair, and is essential for spermatogenesis—none of which are properties of a pseudogene[2][4]. - The entry "H3 histone pseudogene 43" is a nonfunctional genomic sequence; therefore, it does not qualify as a drug target, a disease-relevant gene, or a functional histone[4]. - H3-3B itself (not pseudogene) is associated with some diseases (e.g., neurodevelopmental syndromes, cancers) and is functionally important in chromatin dynamics and epigenetic regulation, but pseudogenes have no such roles[2][4]. Ambiguity and correction: - There is something incorrect with referring to "H3 histone pseudogene 43" as a target or receptor: it is a pseudogene, not a protein, enzyme, receptor, or otherwise therapeutically actionable biological entity. Summary: - "H3 histone pseudogene 43" (H3P43) is a pseudogene related to H3-3B, encoding no functional protein and thus not considered a canonical biological target or receptor in therapeutic research.[4] - If a functional histone H3 variant is intended, refer instead to "H3.3 histone B" (H3-3B). Otherwise, the term as used here is inappropriate for drug targeting or molecular function analysis.

Other names

H3 histone pseudogene 43p54H3 histone family member 3B pseudogeneH3P43H3.3B pseudogene