H3 histone pseudogene 39 (H3P39)

H3 histone pseudogene 39 (H3P39, also known as p49) is categorized as a **pseudogene** for a histone H3 family member. Pseudogenes are **DNA sequences resembling known genes that are non-functional**; they typically arise either through duplication or retrotransposition events, but they do not encode a functional protein product[4]. The H3 histone family has a large number of such processed pseudogenes, which are generally not transcribed into protein or functional RNA and lack evidence for a biological or therapeutic role in humans. Thus, H3P39 is not a valid receptor, enzyme, transporter, transcription factor, or otherwise actionable molecular target for therapy or drug development.\n\n**Clarification and Potential Issues:**\n- H3 histone pseudogene 39 is *not a canonical histone H3 variant*: Functional histone H3 proteins (such as H3.1, H3.2, H3.3) are expressed from specific genes and play central roles in chromatin structure and gene regulation[1][2][3]. Only the protein-coding histone genes and their functional variants participate in biological processes and serve as drug or biomarker targets.\n- There is **no evidence that H3P39/p49 is expressed or functional or that it represents a therapeutic target**.\n- The name "p49" is used ambiguously in the literature for other entirely unrelated proteins, so this alias may introduce further confusion. If "p49" in a given context refers to something else (such as a viral protein or another cellular factor), that would need explicit clarification.\n- If you are interested in histone H3 variants as genuine targets, the **functional forms are H3.1, H3.2, and H3.3**, especially H3.3, which is linked to chromatin regulation and certain cancers[1][2].\n\n**Conclusion:**\n**H3 histone pseudogene 39 (H3P39/p49) is not a functional target, but a non-functional pseudogene and is not used in drug development, biomarker selection, or disease targeting.** The designation should generally not be used for structured therapeutic target information[4].

Other names

p49H3P39H3 histone pseudogene 39