>TIGR01664 DNA-3'-Pase DNA 3'-phosphatase; InterPro: IPR006551 These proteins catalyse the dephosphorylation of DNA 3'-phosphates. It is believed that this activity is important for the repair of single-strand breaks in DNA caused by radiation or oxidative damage. This region is often , , but not always linked to a DNA 5'-kinase domain , . As is common in this superfamily, DNA 3-phosphatase is magnesium dependent. A difference between this enzyme and other HAD-superfamily phosphatases is in the third conserved catalytic motif which usually contains two conserved aspartate residues believed to be involved in binding the magnesium ion. Here, the second aspartate is usually replaced by an arginine residue which may indicate an interaction with the phosphate backbone of the substrate. Alternatively, there is an additional conserved aspartate downstream of the usual site which may indicate a slightly different fold in this region..

Probab=90.73 E-value=0.3 Score=28.51 Aligned_cols=164 Identities=25% Similarity=0.333 Sum_probs=84.2 Q ss_pred CEEEEECCCEEEE--C-CC------------CCCCHHHHHHHH-----HHCCCCEEEECCCCCCHHHHHHHHHHCCCCCH Q ss_conf 9999927443231--8-81------------486279999999-----98798199985989995899998751277700 Q gi|254780847|r 16 DVILCDVWGVLHN--G-QK------------FLPGTIPALKEA-----RENGLKVILFTNSPRPSASVISQIQSLGSSSQ 75 (282) Q Consensus 16 d~~lfD~DGvL~~--g-~~------------~ipgA~e~l~~L-----~~~g~~~~~lTN~s~~~~~~~~~L~~lG~~~~ 75 (282) T Consensus 20 n~~~FDLDgTLI~t~SP~~v~p~~~~dW~~i~~~~~p~kL~~LCniid~~~gY~iVIftNQ~-------------~i~r~ 86 (239) T TIGR01664 20 NVAAFDLDGTLIKTRSPNKVFPKDASDWRFILFKEVPEKLKELCNIIDEDEGYKIVIFTNQS-------------GIGRG 86 (239) T ss_pred EEEEEECCCCEECCCCCCCCCCCCCCCCEEECCCCCHHHHHHHHHHHCCCCCEEEEEEECCC-------------CEEEC T ss_conf 68897056432055787877888702341412554147999885441035870799987146-------------31243 Q ss_pred H-CCCCCCHHHHHHHHHHHHCCCCCCCCCCCHHHHHHCCCCCCCCCCCCCCEEEEECCCCCCCCHHHHHHHHHHHHH--C Q ss_conf 0-013568799999999853165454387252124311797315755678689984377100117999999999973--0 Q gi|254780847|r 76 F-WDDIITSGDLTHHLLVEESHNIFFIGPQRDYALLEKLNIKIVNEQHAETILCTGLYDDEKDKTEDYRMLLERFAH--R 152 (282) Q Consensus 76 ~-~d~I~ts~~~~~~~l~~~~~~v~viG~~~~~~~l~~~g~~~~~~~~~~~iv~~g~~~~~~~~~~~~~~l~~~~~~--~ 152 (282) T Consensus 87 kn~~~~-----s~~~~~~------------Ki~~~~~~l~n----derG----------------etlshrlWlya~P~r 129 (239) T TIGR01664 87 KNKRSK-----SAESFVN------------KIESILKKLDN----DERG----------------ETLSHRLWLYAVPIR 129 (239) T ss_pred CCCCCH-----HHHHHHH------------HHHHHHHHHCC----CCCC----------------CHHHHHHHHHCCCCC T ss_conf 752010-----1788999------------99999986057----5454----------------223321110006888 Q ss_pred CCCEEECCCCCCCCC-CCCHHHHHHHHHHHHHHHCCCCCCCCCCCCHHHHH----HHHHH--HHHHC--CCCCCCEEEEC Q ss_conf 574031266432256-63001104899998875047653234777025899----99986--54314--88900089973 Q gi|254780847|r 153 HIPLICANPDIVANR-GNKIIPCAGALALIYQQLNGIVKMIGKPHLPIYEM----AFKKI--SSLCN--SFNKKRILAIG 223 (282) Q Consensus 153 ~~~~i~~N~D~~~p~-~~~~~~~~G~~~~~~~~~~g~~~~~GKP~~~~~~~----a~~~l--~~~~~--~~~~~~~lmIG 223 (282) T Consensus 130 P~vl~A~~skitf~~~G~~~~~DPni----fek-------yRKP~tGM~e~fkrdl~~~yrvseq~~G~~I~~~~~~yvG 198 (239) T TIGR01664 130 PQVLIATHSKITFKGKGESINDDPNI----FEK-------YRKPMTGMWEYFKRDLESKYRVSEQIDGIPIKIKRSFYVG 198 (239) T ss_pred CEEEEEECCEEEECCCCCCCCCCCCC----CCC-------CCCCCCCHHHHHHHHHHHHHCCCCCCCCEEEECCCEEEEE T ss_conf 55777506502210268888887510----024-------4688986278888999986101247897056438568970 Q ss_pred CC----H------------HHHHHHHHHCCCCE Q ss_conf 88----5------------78899999769969 Q gi|254780847|r 224 DG----M------------DTDIKGALQSGIDA 240 (282) Q Consensus 224 D~----l------------~tDI~gA~~~G~~s 240 (282) T Consensus 199 DAagr~~~WaPGrk~~d~s~aDi~FA~n~G~~F 231 (239) T TIGR01664 199 DAAGRKLGWAPGRKKKDFSDADIKFAKNLGLEF 231 (239) T ss_pred CCCCCCCCCCCCCCCCCCCHHHHHHHHHCCCCC T ss_conf 047788888888888888746789999669842

HHsearch alignment for GI: 254780847 and conserved domain: TIGR01664