>TIGR02180 GRX_euk Glutaredoxin; InterPro: IPR011899 Glutaredoxins , , , also known as thioltransferases (disulphide reductases, are small proteins of approximately one hundred amino-acid residues which utilise glutathione and NADPH as cofactors. Oxidized glutathione is regenerated by glutathione reductase. Together these components compose the glutathione system . Glutaredoxin functions as an electron carrier in the glutathione-dependent synthesis of deoxyribonucleotides by the enzyme ribonucleotide reductase. Like thioredoxin, which functions in a similar way, glutaredoxin possesses an active centre disulphide bond . It exists in either a reduced or an oxidized form where the two cysteine residues are linked in an intramolecular disulphide bond. Glutaredoxin has been sequenced in a variety of species. On the basis of extensive sequence similarity, it has been proposed that Vaccinia virus protein O2L is most probably a glutaredoxin. Finally, it must be noted that Bacteriophage T4 thioredoxin seems also to be evolutionary related. In position 5 of the pattern T4 thioredoxin has Val instead of Pro. This entry is found in eukaryotic glutaredoxins and includes sequences from fungi, plants and metazoans as well as viruses .; GO: 0006118 electron transport, 0045454 cell redox homeostasis.

Probab=96.69  E-value=0.0035  Score=39.47  Aligned_cols=70  Identities=24%  Similarity=0.424  Sum_probs=47.4

Q ss_pred             EEEEECCCCHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCH-----HHHHHHCCCCCCEEEEEECCEEEEEEECCCCCHH
Q ss_conf             99987699702221346666542100012333226723265-----7777623156887999979989858874899989
Q gi|254780822|r   23 VVDFWASWCRPCVKLSPIIDDIADELADKVKITKLDIEESS-----EISTRYQISSIPTLILFKDGKVIDRMMPGASSQS   97 (107)
Q Consensus        23 lv~f~a~wC~~C~~~~p~~~~l~~~~~~~i~~~~vd~d~~~-----~l~~~~~v~~~Pt~~~~~~g~~~~~~~~g~~~~~   97 (107)
T Consensus         1 V~vFSKs~CPYC~~ak~~L~~~~-~~~~~~~v~ElD~~~~g~~~Q~~L~~~TG~~TVP~iFi--~g~----~iGG~~D~~   73 (85)
T TIGR02180         1 VVVFSKSYCPYCKKAKEILKKLN-VKPAKYKVVELDQLSNGSEIQDYLKEITGQRTVPNIFI--NGK----FIGGCSDLL   73 (85)
T ss_pred             CEEEECCCCCHHHHHHHHHHHCC-CCCCCCEEEEECCCCCHHHHHHHHHHHCCCCCCCCEEE--CCE----EECCCHHHH
T ss_conf             95774389846889999987448-98676406770257885789999998448923882656--885----767824556


Q ss_pred             HH
Q ss_conf             99
Q gi|254780822|r   98 DI   99 (107)
Q Consensus        98 ~l   99 (107)
T Consensus        74 ~~   75 (85)
T TIGR02180        74 AL   75 (85)
T ss_pred             HH
T ss_conf             54