Cytochrome c, somatic pseudogene 51 (CYCSP51)

**CYCS pseudogene 51 (CYCSP51)** is a full-length human pseudogene derived from the cytochrome c gene, also known as HCP1. It does not produce a functional protein but serves as an inactive genetic vestige resulting from retrotransposition events during evolution. There is no evidence it acts as a receptor, enzyme, transporter, or has a therapeutic function. This pseudogene is not considered a molecular target and does not participate in cellular signaling, biological pathways, or disease mechanisms[6][7]. Its identification is of evolutionary and genomic interest only. **Key information:** - CYCSP51 is classified strictly as a pseudogene in humans and has no active or actionable biological function[6][5][7]. - The label "HCP1" here refers to human cytochrome c pseudogene 1 and should not be confused with Hcp1 from bacterial Type VI Secretion System studies[1][3], which is a protein with structural and immunological relevance in bacterial pathogenesis. **Notable clarification:** - There is no evidence CYCSP51/HCP1 is a molecular target (drug, receptor, enzyme, etc.) in humans. - If the intent is to describe the bacterial Hcp1 protein relevant to secretion systems, that is a completely different molecule and context[1][3]. - CYCSP51 does not meet criteria for inclusion as a receptor, enzyme, transporter, or any other conventional therapeutic target; it is only a pseudogene.

Other names

CYCS pseudogene 51cytochrome c, somatic pseudogene 51HCP1human cytochrome c pseudogene 1

None (not a target for therapeutic intervention; does not possess an actionable mechanism)