>cd03016 PRX_1cys Peroxiredoxin (PRX) family, 1-cys PRX subfamily; composed of PRXs containing only one conserved cysteine, which serves as the peroxidatic cysteine. They are homodimeric thiol-specific antioxidant (TSA) proteins that confer a protective role in cells by reducing and detoxifying hydrogen peroxide, peroxynitrite, and organic hydroperoxides. As with all other PRXs, a cysteine sulfenic acid intermediate is formed upon reaction of 1-cys PRX with its substrates. Having no resolving cysteine, the oxidized enzyme is resolved by an external small-molecule or protein reductant such as thioredoxin or glutaredoxin. Similar to typical 2-cys PRX, 1-cys PRX forms a functional dimeric unit with a B-type interface, as well as a decameric structure which is stabilized in the reduced form of the enzyme. Other oligomeric forms, tetramers and hexamers, have also been reported. Mammalian 1-cys PRX is localized cellularly in the cytosol and is expressed at high levels in brain, eye, testes an

Probab=100.00 E-value=2.9e-38 Score=256.33 Aligned_cols=146 Identities=30% Similarity=0.450 Sum_probs=134.0 Q ss_pred CCCCCCCEEEECCCCCEEEHHHHCC-CEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 9865373078869997882898699-859999651136766311261000000000123333222344432111122221 Q gi|254780212|r 6 VGDKAPHFVLPSNDEQEISLLALGG-SKIVLYFYPKDDTSGCTAEAINFSSLKADFDEESTILIGISPDSIASHKKFHQK 84 (157) Q Consensus 6 vG~~aP~f~l~~~~g~~~~l~~l~g-k~vvl~f~~~~~tp~C~~e~~~l~~~~~~~~~~gv~vv~is~d~~~~~~~~~~~ 84 (157) T Consensus 1 vG~~aPdF~~~~~~g~-i~l~dy~G~k~vvlffyP~dfT~vCttEl~~~~~~~~eF~~~~~~vlgiS~Ds~~sH~aW~~~ 79 (203) T cd03016 1 LGDTAPNFEADTTHGP-IKFHDYLGDSWGILFSHPADFTPVCTTELGAFAKLAPEFKKRNVKLIGLSVDSVESHIKWIED 79 (203) T ss_pred CCCCCCCCEEECCCCC-EEHHHHCCCCEEEEEECCCCCCCCCCHHHHHHHHHHHHHHHCCCEEEEEECCCHHHHHHHHHC T ss_conf 9785898786457785-978997799789999666668987837899999989999974987999737868878888658 Q ss_pred ------CCCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCEEEEEECCCCEEEEE-ECCCCCCCCHHHHHHHHHHHH Q ss_conf ------000000001234458998598666655766544421079998899979999-768885789999999999850 Q gi|254780212|r 85 ------HNLSITLLADESKEVLKSYDVWKEKSMFGKKYMGVVRTTFLIDEKGIIAQI-WKPVTLKNHAQSVLKMVKSLK 156 (157) Q Consensus 85 ------~~~~fpil~D~~~~~~~~~gv~~~~~~~~~~~~~~~r~tfiid~~G~I~~~-~~~~~~~~~~~eil~~i~~L~ 156 (157) T Consensus 80 ~~~~~g~~v~fPllaD~~~~ia~~yGvl~~~~g~----~~a~R~~FIIDp~g~Ir~~~v~~~~vGRnvdEiLR~ldAlQ 154 (203) T cd03016 80 IEEYTGVEIPFPIIADPDREVAKLLGMIDPDAGS----TLTVRAVFIIDPDKKIRLILYYPATTGRNFDEILRVVDALQ 154 (203) T ss_pred HHHHCCCCCCCCCCCCCCHHHHHHHCCCCCCCCC----CCEEEEEEEECCCCEEEEEEECCCCCCCCHHHHHHHHHHHH T ss_conf 8975696623142227862588873443713488----63367899989998399999758776668899999999998

HHsearch alignment for GI: 254780212 and conserved domain: cd03016