>TIGR00614 recQ_fam ATP-dependent DNA helicase, RecQ family; InterPro: IPR004589 The ATP-dependent DNA helicase RecQ (3.6.1 from EC) is involved in genome maintenance . All homologues tested to date unwind paired DNA, translocating in a 3' to 5' direction and several have a preference for forked or 4-way DNA structures (e.g. Holliday junctions) or for G-quartet DNA. The yeast protein, Sgs1, is present in numerous foci that coincide with sites of de novo synthesis DNA, such as the replication fork, and protein levels peak during S-phase. A model has been proposed for Sgs1p action in the S-phase checkpoint response, both as a 'sensor' for damage during replication and a 'resolvase' for structures that arise at paused forks, such as the four-way 'chickenfoot' structure. The action of Sgs1p may serve to maintain the proper amount and integrity of ss DNA that is necessary for the binding of RPA (replication protein A, the eukaryotic ss DNA-binding protein)DNA pol complexes. Sgs1p would thus function by detecting (or resolving) aberrant DNA structures, and would thus contribute to the full activation of the DNA-dependent protein kinase, Mec1p and the effector kinase, Rad53p. Its ability to bind both the large subunit of RPA and the RecA-like protein Rad51p, place it in a unique position to resolve inappropriate fork structures that can occur when either the leading or lagging strand synthesis is stalled. Thus, RecQ helicases integrate checkpoint activation and checkpoint response. ; GO: 0008026 ATP-dependent helicase activity, 0006310 DNA recombination.

Probab=98.92 E-value=3.1e-06 Score=68.44 Aligned_cols=317 Identities=19% Similarity=0.306 Sum_probs=219.1 Q ss_pred CHHHHHHHHHHHHHHCCCCCCEEEEEECCCCCHHHHHHHHHHHHHHHHCCEEEEEHHHH-HHHHHHHHHHHHCCCCCCEE Q ss_conf 98899999999984100134307886214422369999997334443054588612799-99999986211014578658 Q gi|254780945|r 274 TKSQESAIKDILQDMSQKNRMLRILQGDVGSGKTLVALIAMAAAVEAGGQAVIMAPIGI-LAQQHYEFIKKYTQNTQIIV 352 (700) Q Consensus 274 T~~Q~~ai~eI~~Dl~~~~pM~RLLQGDVGSGKTiVA~~A~l~~~~~G~Q~alMaPTEI-LA~QH~~~~~~~~~~~~i~v 352 (700) T Consensus 13 rp~Q~e~I~~~L~g~RD~-----~vvMpTG~GKSLCYQ~Pa~---~~~G~t~VIsP-LiSLm~DQV~~L----~~~~i~A 79 (497) T TIGR00614 13 RPVQLEVINAVLEGRRDC-----LVVMPTGGGKSLCYQLPAL---YSDGLTLVISP-LISLMEDQVLQL----KASGIPA 79 (497) T ss_pred CHHHHHHHHHHHCCCCCE-----EEEECCCCCHHHHHHHHHH---HCCCCEEEECC-HHHHHHHHHHHH----HHCCCCE T ss_conf 514899999875489756-----9981589860367640567---50896499736-365689999998----7448630 Q ss_pred EEEECCCCHHHHHHHHHHH--CCCCCEEEEEC-------HHHCCC---CCCCCCCCEEEECCCC---CCCHHHHHHHHH- Q ss_conf 9962464225667687762--13475486411-------120133---4554444178852101---335688998740- Q gi|254780945|r 353 EIITGNMPQAHRRKALERI--AHGQAHIIIGT-------HALFQD---SIQYYKLILVIVDEQH---RFGVQQRLKLTQ- 416 (700) Q Consensus 353 ~lLtg~~~~~er~~i~~~i--~~G~~~iiIGT-------HAL~q~---~v~F~~LgLvViDEQH---RFGV~QR~~L~~- 416 (700) T Consensus 80 ~~L~s~~s~~~~~~v~~~~~~k~g~~kllYvtPE~~~~~~~ll~~Le~~Y~~~~~~~iAvDEAHCiSqWGHDFR~~Y~~L 159 (497) T TIGR00614 80 TFLNSSQSKEQQKEVLTDLSKKDGKLKLLYVTPEKISKSKSLLQTLEKLYERKGITLIAVDEAHCISQWGHDFRPDYKAL 159 (497) T ss_pred ECCCCCCCHHHHHHHHHHHHHHCCCEEEEEECHHHHHCCHHHHHHHHHHHHHCCCEEEEEECEEEECCCCCCCCHHHHHH T ss_conf 10443257789999999987307975899716346534647899999988644966999832154358888740799996 Q ss_pred -----CCCCCCCEEECHHHHHHHHHH--HHHHCCCHHHHCCCCCCCCCCEEEEEECC----C-HHHHHHHHH-HHHC--- Q ss_conf -----256776101010132278999--97520101111023557666207999702----0-026899997-6310--- Q gi|254780945|r 417 -----KATAPHVLLMTATPIPRTLVL--TSLGDIDISKITEKPAGRKPIKTVIIPIN----R-IDEVIERLK-VVLS--- 480 (700) Q Consensus 417 -----Kg~~ph~L~MtATPIPRTLal--~~ygdldvS~i~e~P~gR~~I~T~~~~~~----~-~~~~~~~i~-~~l~--- 480 (700) T Consensus 160 G~Lk~~fP~vP~~ALTATA~~~~~~Di~~~L~-l~~p~~~~~SFdRPNl~y~v~~K~~n~~~~~~dl~~f~~~~~~s~~~ 238 (497) T TIGR00614 160 GSLKQKFPNVPIMALTATASPSVREDILRILN-LKNPQVFITSFDRPNLYYEVRRKTSNTKKILEDLLRFIVKKASSAWE 238 (497) T ss_pred HHHHHHCCCCCEEEEECCCCHHHHHHHHHHHC-CCCCCEEEECCCCCCCEEEEECCCCCHHHHHHHHHHHHHHHCCCCCC T ss_conf 57888548874364340578678999998722-13662464046687630340057897025899999998752035652 Q ss_pred -CCCEEEEEECCCCCCCCCCCCHHHHHHHHHHHHCCCCEECCCCCCCHHHHHHHHHHHH-CCCEEEEEECHHHHCCCCCC Q ss_conf -3873899971201221112101466666668663710312014699899999999975-59869999800341046888 Q gi|254780945|r 481 -EGKKAYWICPQIEEKKESNFRSVVERFNSLHEHFTSSIAIIHGRMSDIDKESVMDSFK-NGTCKLLIATTVIEVGIDVV 558 (700) Q Consensus 481 -~g~q~y~VcPlIeese~~~~~~~~~~~~~l~~~~~~~v~~lHGkm~~~ek~~~m~~F~-~g~~~iLvaTtviEVGvdvp 558 (700) T Consensus 239 ~~G~sGIIYC~SR--------~~~e~~a~~L~~~-G~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATvAFGMGInKp 309 (497) T TIGR00614 239 FKGKSGIIYCPSR--------KKSEQVAAELQKL-GIAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATVAFGMGINKP 309 (497) T ss_pred CCCCCEEEECCCC--------HHHHHHHHHHHHC-CCEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEEECCCCCCCC T ss_conf 4588302752872--------3489999999755-861002402688647789999875038857999872126888763 Q ss_pred CCCEEEEECHHHCCHHHHHHHHHCCCCCCCCEEEEEEECCCCCHHHHHHHHHHHHHCHH Q ss_conf 76589985852547468877301166789835999970888998799999999841425 Q gi|254780945|r 559 DASIIIIENAEHFGLAQLHQLRGRVGRGEEISSCILLYHPPLSKNSYTRLSVLKNTEDG 617 (700) Q Consensus 559 na~~mvI~~aerfGLsqLHQLRGRVGRg~~~s~c~l~~~~~~~~~~~~Rl~~l~~~~dG 617 (700) T Consensus 310 dvRfViH~~~Pk-~~EsYYQE~GRAGRDgl~s~c~lfy~~a--D~~~~~~-~l~e~~~~ 364 (497) T TIGR00614 310 DVRFVIHYSLPK-SMESYYQESGRAGRDGLPSECVLFYAPA--DIARLRR-LLVEEPDG 364 (497) T ss_pred CCCEEEEECCCC-CCCCCCCCCCCCCCCCCCCCEEEEECHH--HHHHHHH-HHEECCCC T ss_conf 536788507885-6211013555567897320102330435--6999988-74004577

HHsearch alignment for GI: 254780945 and conserved domain: TIGR00614