{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Although none of the provided abstracts address FKBP7 directly, the collective findings from studies of related peptidyl‐prolyl isomerases offer important clues about its likely functions. Members of the immunophilin family—including FKBP proteins as well as other isomerases such as Pin1 and cyclophilins—catalyze cis–trans isomerization of phosphorylated peptide bonds, thereby modulating protein conformation, stability, and interactions. For example, Pin1‐mediated isomerization is essential for conformational changes that enhance p53 transactivation and promote its dissociation from negative regulators after DNA damage."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " In other contexts, mitochondrial isomerases—such as cyclophilin D and FKBP family member calstabin2—play key roles in regulating the mitochondrial permeability transition and thereby influence cell death pathways."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": " Likewise, Pin1 has been shown to modulate innate immune responses by affecting the stability and activity of transcription factors such as IRF3, which in turn controls interferon‐β production."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": " Moreover, these enzymes have been implicated in diverse processes ranging from oncogenic signaling and epithelial–mesenchymal transition to the regulation of metabolic flexibility and protein quality control."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "7", "end_ref": "10"}]}, {"type": "t", "text": " "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n By extension, FKBP7—an FK506‐binding protein and member of the FKBP immunophilin family—can be predicted to function similarly by catalyzing prolyl isomerization events that fine‐tune the folding, stability, and activity of client proteins. Given the precedent that related isomerases modulate key regulators of stress responses, cell cycle progression, apoptosis, and signal transduction, FKBP7 is likely to contribute to endoplasmic reticulum protein homeostasis and to the regulation of signaling cascades that safeguard cellular function under stress. Such a role would be consistent with the emerging paradigm in which peptidyl–prolyl isomerization is a critical layer of control in both normal physiology and disease pathogenesis.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Paola Zacchi, Monica Gostissa, Takafumi Uchida, et al. 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