>cd03029 GRX_hybridPRX5 Glutaredoxin (GRX) family, PRX5 hybrid subfamily; composed of hybrid proteins containing peroxiredoxin (PRX) and GRX domains, which is found in some pathogenic bacteria and cyanobacteria. PRXs are thiol-specific antioxidant (TSA) proteins that confer a protective antioxidant role in cells through their peroxidase activity in which hydrogen peroxide, peroxynitrate, and organic hydroperoxides are reduced and detoxified using reducing equivalents derived from either thioredoxin, glutathione, trypanothione and AhpF. GRX is a glutathione (GSH) dependent reductase, catalyzing the disulfide reduction of target proteins. PRX-GRX hybrid proteins from Haemophilus influenza and Neisseria meningitis exhibit GSH-dependent peroxidase activity. The flow of reducing equivalents in the catalytic cycle of the hybrid protein goes from NADPH - GSH reductase - GSH - GRX domain of hybrid - PRX domain of hybrid - peroxide substrate.

Probab=96.13  E-value=0.012  Score=36.47  Aligned_cols=56  Identities=14%  Similarity=0.341  Sum_probs=39.1

Q ss_pred             EEEEECCCCHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCC---HHHHHHHCCCCCCEEEEEECCEEE
Q ss_conf             9998769970222134666654210001233322672326---577776231568879999799898
Q gi|254780822|r   23 VVDFWASWCRPCVKLSPIIDDIADELADKVKITKLDIEES---SEISTRYQISSIPTLILFKDGKVI   86 (107)
Q Consensus        23 lv~f~a~wC~~C~~~~p~~~~l~~~~~~~i~~~~vd~d~~---~~l~~~~~v~~~Pt~~~~~~g~~~   86 (107)
T Consensus         3 V~Iysk~~CpyC~~AK~lL~~~gi~y~------ei~l~~~~~~~~l~~~~g~~TvPQIfi--~g~~I   61 (72)
T cd03029           3 VSLFTKPGCPFCARAKAALQENGISYE------EIPLGKDITGRSLRAVTGAMTVPQVFI--DGELI   61 (72)
T ss_pred             EEEECCCCCHHHHHHHHHHHHCCCCEE------EEECCCCHHHHHHHHHCCCCEECEEEE--CCEEE
T ss_conf             999908999679999999998599659------998887767999987439972298999--99999