>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=96.69 E-value=0.00065 Score=47.62 Aligned_cols=127 Identities=19% Similarity=0.252 Sum_probs=80.6 Q ss_pred CCCCCCCCCCCCHHHHHHHCCCCCCCEECCC------CCCC--------CCCC-----CCCCCCCCCCCCCCCCCCCCCC Q ss_conf 4321234545301124421012210000011------1122--------2222-----3212222222222233233220 Q gi|254781055|r 170 STLIIGGGYIAVEFAGILNSLGSKTTLVTRG------NSIL--------SKFD-----SDIRQGLTDVMISRGMQVFHND 230 (461) Q Consensus 170 ~i~IiGgG~ig~E~A~~~~~lG~~Vtli~~~------~~~l--------~~~d-----~~~~~~~~~~l~~~Gv~i~~~~ 230 (461) T Consensus 2 DviIIGaGPAGlTAAIYa~Ra~l~~l~~eg~~~G~aGGql~~T~~vENYPGf~e~i~G~~L~~~M~~Qa~~fG~~~~~G~ 81 (321) T TIGR01292 2 DVIIIGAGPAGLTAAIYAARANLKTLLIEGMEPGIAGGQLTTTTEVENYPGFPEGISGPELMEKMKEQAKKFGAEIIYGE 81 (321) T ss_pred CEEEECCCHHHHHHHHHHHHHCCEEEEEECCCCCCCCCCCCCCCEEECCCCCCCCCCHHHHHHHHHHHHHHCCCCEEECC T ss_conf 28998478678889999887467278983577774555333220651368688876628899999999987067366267 Q ss_pred EEEECCCCCC-----CCEEEEECCCCCCCCCCEECCCCEEEECCCCCCCCC-CCCCCCCC---CCCCC--C-CCCCEEEE Q ss_conf 0011024457-----610243127532222100001522200126841123-21123543---34457--4-30000355 Q gi|254781055|r 231 TIESVVSESG-----QLKSILKSGKIVKTDQVILAVGRTPRTTGIGLEKVG-VKMDENGF---IITDC--Y-SRTNVQSI 298 (461) Q Consensus 231 ~v~~i~~~~~-----~~~~~~~~g~~~~~D~vl~a~Gr~Pn~~~l~L~~~g-i~~~~~G~---i~vd~--~-~~Ts~~~I 298 (461) T Consensus 82 ~v~~v~~~~~~yE~~~F~~~~~--~~y~a~avIiAtGa~~r--~lg~~k-GE~ef~GrGVSyCA~CDGA~~ffk--~K~V 154 (321) T TIGR01292 82 EVIRVDKSDRAYESDPFKVKTG--KEYTAKAVIIATGAEAR--KLGIPK-GEDEFLGRGVSYCATCDGASPFFK--NKEV 154 (321) T ss_pred EEEEEECCCCCCCCCEEEEEEC--CEEEEEEEEEECCCHHH--HCCCCC-CHHHHCCCCEEEEEHHCCCCHHHC--CCEE T ss_conf 0568633788436610389717--56886589991387154--237886-645532686667223105401205--9889 Q ss_pred EEECC Q ss_conf 87125 Q gi|254781055|r 299 FSLGD 303 (461) Q Consensus 299 yA~GD 303 (461) T Consensus 155 ~VvGG 159 (321) T TIGR01292 155 AVVGG 159 (321) T ss_pred EEECC T ss_conf 99879

HHsearch alignment for GI: 254781055 and conserved domain: TIGR01292