GLRX3

This gene encodes a member of the glutaredoxin family. Glutaredoxins are oxidoreductase enzymes that reduce a variety of substrates using glutathione as a cofactor. The encoded protein binds to and modulates the function of protein kinase C theta. The encoded protein may also inhibit apoptosis and play a role in cellular growth, and the expression of this gene may be a marker for cancer. Pseudogenes of this gene are located on the short arm of chromosomes 6 and 9. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Dec 2010]

Glutaredoxin 3

Together with BOLA2, acts as a cytosolic iron-sulfur (Fe-S) cluster assembly factor that facilitates [2Fe-2S] cluster insertion into a subset of cytosolic proteins (PubMed:26613676, PubMed:27519415).

Acts as a critical negative regulator of cardiac hypertrophy and a positive inotropic regulator (By similarity).

Required for hemoglobin maturation (PubMed:23615448).

Does not possess any thyoredoxin activity since it lacks the conserved motif that is essential for catalytic activity.

[2Fe-2S] cluster assembly Source: UniProtKB
Cellular iron ion homeostasis Source: GO_Central
Negative regulation of cardiac muscle hypertrophy Source: UniProtKB
Protein maturation by iron-sulfur cluster transfer Source: UniProtKB
Regulation of the force of heart contraction Source: UniProtKB

Cytosol; Cell cortex; Z line. Under the plasma membrane (By similarity). After PMA stimulation, GLRX3 and PRKCQ/PKC-theta translocate to a more extended submembrane area (By similarity). In the Z line, found associated with CSRP3 (By similarity).