>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=97.38  E-value=0.00018  Score=44.91  Aligned_cols=66  Identities=15%  Similarity=0.174  Sum_probs=50.9

Q ss_pred             CCCCCCCCCHHHHHHHHHHHHCCCCEEEEECCCCCC-CHHHHHHCCCCCCCHHHHCCHHHHCCCCHHH
Q ss_conf             521358998689999999998699829998886777-8899985568775201110001110121035
Q gi|254780594|r    2 SILYHYPLSSSSRFIRLILSEYEFTTDMIEEFPWGK-RREFLELNPSGTLPVYIDEHMQALCGVFVIS   68 (230)
Q Consensus         2 ~~LY~~~~sp~~~kvr~~L~e~gi~y~~~~~~~~~~-~~~~~~lnP~g~vP~L~~~dg~~l~eS~aI~   68 (230)
T Consensus         2 V~iYs~~~C~~C~~ak~~L~~~~i~y~e~di~~~~~~~~~l~~~~g~~tvPqIfi-~g~~IGG~~~l~   68 (72)
T cd02066           2 VVVFSKSTCPYCKRAKRLLESLGIEFEEIDILEDGELREELKELSGWPTVPQIFI-NGEFIGGYDDLK   68 (72)
T ss_pred             EEEEECCCCHHHHHHHHHHHHCCCCCEEEEECCCHHHHHHHHHHHCCCCCCEEEE-CCEEECCHHHHH
T ss_conf             9999779997699999999956997789980598889999999849988995999-998981689999