Glutathione peroxidase 4: a new player in neurodegeneration? Molecular Psychiatry 5 6) By contrast, latency I Burkitt B cells were particularly vulnerable to ferroptosis induction by blockade of either cystine import, glutathione synthesis or glutathione peroxidase 4 (GPX4). Eric also found roles for GPX4 Inhibitor A16 98% (HPLC), powder, glutathione peroxidase 4 inhibitor Sigma Aldrich Glutathione Peroxidase 4 GPX4 Activity Assay Kit Operation Guide