Glutaredoxin

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Glutaredoxin
SCOP2
1kte / SCOPe / SUPFAM
OPM superfamily131
OPM protein1z9h
CDDcd02066
Available protein structures:
Pfam  structures / ECOD  
PDBRCSB PDB; PDBe; PDBj
PDBsumstructure summary

Glutaredoxins[1][2][3] (also known as Thioltransferase) are small redox enzymes of approximately one hundred amino-acid residues that use glutathione as a cofactor. In humans this oxidation repair enzyme is also known to participate in many cellular functions, including redox signaling and regulation of glucose metabolism.[4][5] Glutaredoxins are oxidized by substrates, and reduced non-enzymatically by glutathione. In contrast to thioredoxins, which are reduced by thioredoxin reductase, no oxidoreductase exists that specifically reduces glutaredoxins. Instead, glutaredoxins are reduced by the oxidation of glutathione. Reduced glutathione is then regenerated by glutathione reductase. Together these components compose the glutathione system.[6]

Like

iron-sulfur clusters and to deliver the cluster to enzymes on demand.[8]

In viruses

Glutaredoxin has been sequenced in a variety of

Bacteriophage T4
thioredoxin seems to be evolution-related. In position 5 of the pattern T4, thioredoxin has Val instead of Pro.

In plants

Approximately 30 GRX isoforms are described in the model plant

higher plants. In Arabidopsis GRXs are involved in flower development and Salicylic acid signalling.[8]

Subfamilies

Human proteins containing this domain

PTGES2

References

External links