>cd02066 GRX_family Glutaredoxin (GRX) family; composed of GRX, approximately 10 kDa in size, and proteins containing a GRX or GRX-like domain. GRX is a glutathione (GSH) dependent reductase, catalyzing the disulfide reduction of target proteins such as ribonucleotide reductase. It contains a redox active CXXC motif in a TRX fold and uses a similar dithiol mechanism employed by TRXs for intramolecular disulfide bond reduction of protein substrates. Unlike TRX, GRX has preference for mixed GSH disulfide substrates, in which it uses a monothiol mechanism where only the N-terminal cysteine is required. The flow of reducing equivalents in the GRX system goes from NADPH - GSH reductase - GSH - GRX - protein substrates. By altering the redox state of target proteins, GRX is involved in many cellular functions including DNA synthesis, signal transduction and the defense against oxidative stress. Different classes are known including human GRX1 and GRX2, as well as E. coli GRX1 and GRX3, which

Probab=96.74  E-value=0.004  Score=39.13  Aligned_cols=55  Identities=22%  Similarity=0.512  Sum_probs=40.3

Q ss_pred             EEEEECCCCHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCHH----HHHHHCCCCCCEEEEEECCEE
Q ss_conf             999876997022213466665421000123332267232657----777623156887999979989
Q gi|254780822|r   23 VVDFWASWCRPCVKLSPIIDDIADELADKVKITKLDIEESSE----ISTRYQISSIPTLILFKDGKV   85 (107)
Q Consensus        23 lv~f~a~wC~~C~~~~p~~~~l~~~~~~~i~~~~vd~d~~~~----l~~~~~v~~~Pt~~~~~~g~~   85 (107)
T Consensus         2 V~iYs~~~C~~C~~ak~~L~~~~------i~y~e~di~~~~~~~~~l~~~~g~~tvPqIfi--~g~~   60 (72)
T cd02066           2 VVVFSKSTCPYCKRAKRLLESLG------IEFEEIDILEDGELREELKELSGWPTVPQIFI--NGEF   60 (72)
T ss_pred             EEEEECCCCHHHHHHHHHHHHCC------CCCEEEEECCCHHHHHHHHHHHCCCCCCEEEE--CCEE
T ss_conf             99997799976999999999569------97789980598889999999849988995999--9989