Prefoldin subunit 6 (PFDN6)

Prefoldin subunit 6 (PFDN6) is a protein chaperone that is one of six distinct components of the prefoldin complex (hexameric complex with subunits PFDN1–6), which is widely conserved in eukaryotes and archaea[2][3][4]. As part of the prefoldin complex, PFDN6 binds newly synthesized (nascent) proteins, especially cytoskeletal components actin and tubulin, and facilitates their proper folding and assembly by transferring them to the cytosolic chaperonin (CCT or TRiC) complex[1][3][4][5]. This ATP-independent binding prevents protein misfolding and aggregation, supporting cellular protein stability and the assembly of cellular structures such as the cytoskeleton[2][3][4]. Recent research suggests that PFDN6 expression is upregulated following cell activation (including immune cell activation), and overexpression has been linked to adaptive immune responses and certain cancers, suggesting a role as a disease biomarker and modulator of proteostasis in disease contexts[1]. Loss or dysregulation of prefoldin complex components can lead to defects in protein homeostasis and is implicated in protein misfolding diseases and tumor progression[3][4][5]. Currently, PFDN6 is not considered a direct therapeutic target (e.g., not a receptor, enzyme, transporter, or transcription factor), and there are no known drugs or mechanisms of action specifically targeting this protein.

Other names

HKE2H2-KE2PFD6KE-2Protein Ke2HLA class II region expressed gene KE2KE2 protein