GPX4_HUMAN

Evidence for PS localization

GO

G2C

SynGO

SynaptomeDB

Functions

Essential antioxidant peroxidase that directly reduces phospholipid hydroperoxide even if they are incorporated in membranes and lipoproteins . Can also reduce fatty acid hydroperoxide, cholesterol hydroperoxide and thymine hydroperoxide . Plays a key role in protecting cells from oxidative damage by preventing membrane lipid peroxidation . Required to prevent cells from ferroptosis, a non-apoptotic cell death resulting from an iron-dependent accumulation of lipid reactive oxygen species (PubMed). The presence of selenocysteine (Sec) versus Cys at the active site is essential for life: it provides resistance to overoxidation and prevents cells against ferroptosis . The presence of Sec at the active site is also essential for the survival of a specific type of parvalbumin-positive interneurons, thereby preventing against fatal epileptic seizures . May be required to protect cells from the toxicity of ingested lipid hydroperoxides . Required for normal sperm development and male fertility . Essential for maturation and survival of photoreceptor cells . Plays a role in a primary T-cell response to viral and parasitic infection by protecting T-cells from ferroptosis and by supporting T-cell expansion . Plays a role of glutathione peroxidase in platelets in the arachidonic acid metabolism (PubMed). Reduces hydroperoxy ester lipids formed by a 15-lipoxygenase that may play a role as down-regulator of the cellular 15-lipoxygenase pathway . [View more on UniProt]

Protein features

Binary interactions with known binding regions

Interacting region for partners were not defined.

Network

Isoforms

Disease-causing germline mutations

No data found.

Linear motifs

No annotated instance was found. To search for linear motifs, use the ELM prediction server.

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Molecular function

Biological process

Disease

No data found.

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