>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=98.40 E-value=0.00037 Score=50.86 Aligned_cols=344 Identities=21% Similarity=0.251 Sum_probs=207.0 Q ss_pred CCHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHHHHHHHHHCCCCEEEEECCCHHHHHHHHHHHCCCCCEEEEEE Q ss_conf 88378999999987520489619984475315799999999998514684799715210013445554303897689962 Q gi|254780619|r 199 LDKNQQDVVEQVVPLCTKGFAVSLISGVTGSGKTEVYLEIVAAVLHLGKQVLILLPEISLTSAILERFQKRFGVKPAEWH 278 (731) Q Consensus 199 Lt~eQ~~a~~~i~~~~~~~f~~~LL~GvTGSGKTEVYl~li~~~L~~GkqvLiLvPEI~Lt~Q~~~rl~~rF~~~v~v~H 278 (731) T Consensus 12 Frp~Q~e~I~~~L~g~RD----~~vvMpTG~GKSLCY-Q~P--a~~~~G~t~VIsPLiSLm~DQV~~L~~-~~i~A~~L~ 83 (497) T TIGR00614 12 FRPVQLEVINAVLEGRRD----CLVVMPTGGGKSLCY-QLP--ALYSDGLTLVISPLISLMEDQVLQLKA-SGIPATFLN 83 (497) T ss_pred CCHHHHHHHHHHHCCCCC----EEEEECCCCCHHHHH-HHH--HHHCCCCEEEECCHHHHHHHHHHHHHH-CCCCEECCC T ss_conf 551489999987548975----699815898603676-405--675089649973636568999999874-486301044 Q ss_pred CCCCCHHHHHHHHHH--HCCCCEEEEEC-----CH-HHHHHH------CCCEEEEEEECCCCCCHHCCC-CCCCHHHHHH Q ss_conf 355723566789999--71997399940-----01-211001------000136774055321000024-4322489999 Q gi|254780619|r 279 SSLSTSMREKIWRQV--ARGAISVIVGV-----RS-ALFLPF------KKLGLIVIDEEHDISYKQEEG-ILYNARDMSI 343 (731) Q Consensus 279 S~ls~~eR~~~w~~i--~~G~~~IVIGt-----RS-Aif~P~------~nLglIIvDEEHd~sykq~~~-pry~aRdvA~ 343 (731) T Consensus 84 s~~s~~~~~~v~~~~~~k~g~~kllYvtPE~~~~~~~ll~~Le~~Y~~~~~~~iAvDEAHCiS--qWGHDFR~~Y~~LG~ 161 (497) T TIGR00614 84 SSQSKEQQKEVLTDLSKKDGKLKLLYVTPEKISKSKSLLQTLEKLYERKGITLIAVDEAHCIS--QWGHDFRPDYKALGS 161 (497) T ss_pred CCCCHHHHHHHHHHHHHHCCCEEEEEECHHHHHCCHHHHHHHHHHHHHCCCEEEEEECEEEEC--CCCCCCCHHHHHHHH T ss_conf 325778999999998730797589971634653464789999998864496699983215435--888874079999657 Q ss_pred HHHHHCCCCEECCCCCCCHHHHHHHHHHHHHHHCCCC---CCCCCCCCCCEECCCCCCCCCCCCCCCHHHHHHHH-HHHC Q ss_conf 9751103210000245432467753212344412432---23676543321102222332224547989999998-8622 Q gi|254780619|r 344 VRGKIESFPVVLVSATPSIESRVNGISRRYHSVHLST---RYRNSALPHLQVIDMRGQTIAQGKSLSPEMIDGIR-HTLA 419 (731) Q Consensus 344 ~Ra~~~~~~lilgSATPSles~~~~~~g~~~~~~l~~---R~~~~~~P~i~ivDm~~~~~~~~~~lS~~l~~~i~-~~l~ 419 (731) T Consensus 162 Lk~~fP~vP~~ALTATA~~~~~~Di----~~~L~l~~p~~~~~SFdRPNl~y~v~~K~~n~--~~~~~dl~~f~~~~~~s 235 (497) T TIGR00614 162 LKQKFPNVPIMALTATASPSVREDI----LRILNLKNPQVFITSFDRPNLYYEVRRKTSNT--KKILEDLLRFIVKKASS 235 (497) T ss_pred HHHHCCCCCEEEEECCCCHHHHHHH----HHHHCCCCCCEEEECCCCCCCEEEEECCCCCH--HHHHHHHHHHHHHHCCC T ss_conf 8885488743643405786789999----98722136624640466876303400578970--25899999998752035 Q ss_pred CCCEEEEEECCCCEEHHCCCCCCCCCCCCCCCCCEEEEECCCCCCEECHHHCCCCCCCCCCCCCCCCEECCCCCCHHHHH Q ss_conf 65517997422200000023565434310146520121135783200002102446555666787411001354289988 Q gi|254780619|r 420 RNEQTLLFLNRRGYAPLTLCQVCGNRLKCLHCSCWLVEHRSKKKLYCHQCGHSAIYSQSCVVCGSSGKMIACGFGIERIA 499 (731) Q Consensus 420 ~g~qvll~lnRrGya~~~~C~~Cg~~~~C~~C~~~l~~h~~~~~l~Ch~Cg~~~~~~~~Cp~Cg~~~~l~~~G~Gte~~~ 499 (731) T Consensus 236 ~~~~-------~G~sGIIYC-------------------------------------------~SR~-------~~e~~a 258 (497) T TIGR00614 236 AWEF-------KGKSGIIYC-------------------------------------------PSRK-------KSEQVA 258 (497) T ss_pred CCCC-------CCCCEEEEC-------------------------------------------CCCH-------HHHHHH T ss_conf 6524-------588302752-------------------------------------------8723-------489999 Q ss_pred HHHHHCCCCCHHHHCCCCCCCCHHHHHHHHHHHC-CCCCCEEEEEHHHCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 8852048520001023211358678999998621-257657987044302311345201233000344310245578999 Q gi|254780619|r 500 EEVCEYFPLARISILSSDLEGGGGRLQLQLSAIA-KGEIDIIIGTQLVAKGHNFPRMSLVGVVDGDLGLTNADLRSSERT 578 (731) Q Consensus 500 e~l~~~fp~~~v~~~d~d~~~~~~~~~~~~~~~~-~~~~~ilvgTq~i~kg~~fp~v~lv~il~aD~~l~~pd~ra~E~~ 578 (731) T Consensus 259 ~~L~~~G~~a~aYHAGl~----~~~R~~V~~~f~nrD~~QvVvATvAFGMGInKpdvRfViH~~~P--------k~~EsY 326 (497) T TIGR00614 259 AELQKLGIAAGAYHAGLE----ISARKEVQHKFQNRDEIQVVVATVAFGMGINKPDVRFVIHYSLP--------KSMESY 326 (497) T ss_pred HHHHHCCCEEEHHHCCCC----HHHHHHHHHHHHCCCCCEEEEEEEECCCCCCCCCCCEEEEECCC--------CCCCCC T ss_conf 999755861002402688----64778999987503885799987212688876353678850788--------562110 Q ss_pred HHHHHHHHHCCCCCCCCCEEEEEECCC-CCHHHHHHHHCCHHH-HHHHHHHHHHHC Q ss_conf 998754311025667886899993298-648889999589799-999999999981 Q gi|254780619|r 579 FQLLSQVTGRAGRFGLKSLGLIQAYQP-THPVMQALVSGDADS-FYESEIRARESV 632 (731) Q Consensus 579 ~qll~qv~gRagr~~~~g~v~iQt~~p-~~~~~~~~~~~d~~~-f~~~el~~R~~~ 632 (731) T Consensus 327 ----YQE~GRAGRDgl~s~c~lf-y~~aD~~~~~~~l~e~~~~~~ht~~~~~~~~~ 377 (497) T TIGR00614 327 ----YQESGRAGRDGLPSECVLF-YAPADIARLRRLLVEEPDGKYHTQRTYKLKLL 377 (497) T ss_pred ----CCCCCCCCCCCCCCCEEEE-ECHHHHHHHHHHHEECCCCCHHHHHHHHHHHH T ss_conf ----1355556789732010233-04356999988740045775157899999999

HHsearch alignment for GI: 254780619 and conserved domain: TIGR00614