>TIGR01292 TRX_reduct thioredoxin-disulfide reductase; InterPro: IPR005982 Reactive oxygen species (ROS) are known mediators of intracellular signaling cascades. Excessive production of ROS may, however, lead to oxidative stress, loss of cell function, and ultimately apoptosis or necrosis. A balance between oxidant and antioxidant intracellular systems is hence vital for cell function, regulation, and adaptation to diverse growth conditions. Thioredoxin reductase in conjunction with thioredoxin is a ubiquitous oxidoreductase system with antioxidant and redox regulatory roles. Thioredoxin reductase (1.8.1.9 from EC) reduces oxidised thioredoxin in the presence of NADPH. Reduced thioredoxin serves as an electron donor for thioredoxin peroxidase which consequently reduces H_2O_2 to H_2O. In mammals, extracellular forms of Trx also have cytokine-like effects. Mammalian TrxR has a highly reactive active site selenocysteine residue resulting in a profound reductive capacity, reducing several substrates in addition to Trx .; GO: 0004791 thioredoxin-disulfide reductase activity, 0019430 removal of superoxide radicals, 0005737 cytoplasm.

Probab=99.38 E-value=4.1e-12 Score=103.07 Aligned_cols=115 Identities=30% Similarity=0.492 Sum_probs=82.2 Q ss_pred CCEEEECCCHHHHHHHHHHHHCCCCCEEEEEECCCCCCCCCCCCCEECHHHHHHHCCCHHHHCCCCCCCEEEEEEEEEEC Q ss_conf 47799989768999999999808997399997867789864027403336788867872641488543224366999977 Q gi|254781024|r 15 YDVVIIGAGPAGLAAAIRCKQINPHLSVVILEKSAEVGAHILSGAIIDPIGIDSLLPRWREDKGHPFHTVVKRDLYWFLN 94 (554) Q Consensus 15 yDVvIVGaGPAG~saA~~La~~g~~l~VlvlEK~~~pG~~i~sG~vl~p~aL~eL~Pd~~e~~g~pl~~~v~~d~~~~l~ 94 (554) T Consensus 1 ~DviIIGaGPAGlTAAIYa~Ra~--l~~l~~eg~~-~G---~aGGql~~T------------------~----------- 45 (321) T TIGR01292 1 YDVIIIGAGPAGLTAAIYAARAN--LKTLLIEGME-PG---IAGGQLTTT------------------T----------- 45 (321) T ss_pred CCEEEECCCHHHHHHHHHHHHHC--CEEEEEECCC-CC---CCCCCCCCC------------------C----------- T ss_conf 92899847867888999988746--7278983577-77---455533322------------------0----------- Q ss_pred CCCCEECCCCCCCCCCCCCCCE--EEEHHHHHHHHHHHHHHCCCEECCCCEEEEEEECCC---CCEEEEEECCCCCCCCC Q ss_conf 9976773654356544678826--888889899999999874953306822434776277---62014541243244346 Q gi|254781024|r 95 AQRSIQIPHFCLPDFMDNKEHY--IVSLGQVCRWLKNKAEALGVEIYCGFTATEIYYGKK---GEALGILTGEKGKNYDG 169 (554) Q Consensus 95 ~~~~~~~p~~~~p~~~~~~g~y--iv~r~~fd~~L~~~Ae~~Gvei~~g~~v~~i~~~e~---g~vvgv~t~~~G~~k~~ 169 (554) T Consensus 46 -----~v---------ENYPGf~e~i~G~~L~~~M~~Qa~~fG~~~~~G~~v~~v~~~~~~yE~~~F~~~~~-------- 103 (321) T TIGR01292 46 -----EV---------ENYPGFPEGISGPELMEKMKEQAKKFGAEIIYGEEVIRVDKSDRAYESDPFKVKTG-------- 103 (321) T ss_pred -----EE---------ECCCCCCCCCCHHHHHHHHHHHHHHCCCCEEECCEEEEEECCCCCCCCCEEEEEEC-------- T ss_conf -----65---------13686888766288999999999870673662670568633788436610389717-------- Q ss_pred CCCCCCCCEEEEEEEEEEEECCCCCH Q ss_conf 65787563026774257860664432 Q gi|254781024|r 170 TQGKHYIAPMLLLSKYMLVGEGACGS 195 (554) Q Consensus 170 ~~~~~~~~g~~i~Ak~vI~AdG~~s~ 195 (554) T Consensus 104 ---------~~y~a~avIiAtGa~~r 120 (321) T TIGR01292 104 ---------KEYTAKAVIIATGAEAR 120 (321) T ss_pred ---------CEEEEEEEEEECCCHHH T ss_conf ---------56886589991387154

HHsearch alignment for GI: 254781024 and conserved domain: TIGR01292