>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=100.00 E-value=0 Score=369.14 Aligned_cols=326 Identities=23% Similarity=0.357 Sum_probs=245.7 Q ss_pred CCCCCCCHHHHHHHHHHHCCC-CEEEECCCCCCHHHHHHHHHHHHHHCCCCCCCCCEEEEECCCHHHHHHHHHHHHHHCC Q ss_conf 879878989999999997699-7999827985178999999999986065214782799982858999999999874102 Q gi|254780382|r 19 AGYVKPTPIQIKTIPLVLQRH-DVCGIAQTGTGKTASFVLPMLTILEKGRARVRMPRTLILEPTRELAAQVADNFEKYGK 97 (465) Q Consensus 19 ~~~~~pt~iQ~~~i~~~l~g~-dvi~~apTGsGKT~~~~lp~l~~l~~~~~~~~~~~~lil~PtreLa~Qi~~~~~~~~~ 97 (465) T Consensus 7 FG~~~Frp~Q~e~I~~~L~g~RD~~vvMpTG~GKSLCYQ~Pa~~~---------~G~t~VIsPLiSLm~DQV~~L~~--- 74 (497) T TIGR00614 7 FGLSSFRPVQLEVINAVLEGRRDCLVVMPTGGGKSLCYQLPALYS---------DGLTLVISPLISLMEDQVLQLKA--- 74 (497) T ss_pred CCCCCCCHHHHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHHHC---------CCCEEEECCHHHHHHHHHHHHHH--- T ss_conf 574445514899999875489756998158986036764056750---------89649973636568999999874--- Q ss_pred CCCCCCCCCCCCCCCCCCCC---CC--CC-HHHHHHCCCCHHHH---HHHC--CCCCCCCCEEECCCCCCCCCCCC--CH Q ss_conf 33322100001222222222---22--10-11221022102333---3200--00001210010255100000001--00 Q gi|254780382|r 98 NYNLTVALLIGGIPFEAQNK---KL--ER-GADVLICTPGRILD---HFNR--GKLLMNNIEILVIDEADRMLDMG--FI 164 (465) Q Consensus 98 ~~~l~~~~~~gg~~~~~~~~---~l--~~-~~~IiV~TP~rl~~---~l~~--~~~~l~~~~~lViDEah~l~~~g--f~ 164 (465) T Consensus 75 -~~i~A~~L~s~~s~~~~~~v~~~~~~k~g~~kllYvtPE~~~~~~~ll~~Le~~Y~~~~~~~iAvDEAHCiSqWGHDFR 153 (497) T TIGR00614 75 -SGIPATFLNSSQSKEQQKEVLTDLSKKDGKLKLLYVTPEKISKSKSLLQTLEKLYERKGITLIAVDEAHCISQWGHDFR 153 (497) T ss_pred -CCCCEECCCCCCCHHHHHHHHHHHHHHCCCEEEEEECHHHHHCCHHHHHHHHHHHHHCCCEEEEEECEEEECCCCCCCC T ss_conf -4863010443257789999999987307975899716346534647899999988644966999832154358888740 Q ss_pred HHHHHH---HHHHCCCCCCCCCCCCCCCCCCCCCCCCC--CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHCC Q ss_conf 357887---54310222223334321122221111222--2210013444321234642111112222110244432101 Q gi|254780382|r 165 PYIQNI---TSLVPFTRQTLLFSATMTDELQKVSENFL--QNPKRIEVNTPSSTAETIEHCFVATYAQYSKKCALLQQLL 239 (465) Q Consensus 165 ~~i~~i---~~~~~~~~q~i~~SAT~~~~v~~l~~~~l--~~~~~i~v~~~~~~~~~i~~~~~~~~~~~~~k~~~l~~l~ 239 (465) T Consensus 154 ~~Y~~LG~Lk~~fP-~vP~~ALTATA~~~~~~Di~~~L~l~~p~~~-~~SFdR--PNl~y~v~~K~~n~~~~~~dl~~f~ 229 (497) T TIGR00614 154 PDYKALGSLKQKFP-NVPIMALTATASPSVREDILRILNLKNPQVF-ITSFDR--PNLYYEVRRKTSNTKKILEDLLRFI 229 (497) T ss_pred HHHHHHHHHHHHCC-CCCEEEEECCCCHHHHHHHHHHHCCCCCCEE-EECCCC--CCCEEEEECCCCCHHHHHHHHHHHH T ss_conf 79999657888548-8743643405786789999987221366246-404668--7630340057897025899999998 Q ss_pred C------CCCCCCEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHC-CCCCEEEEEHHHHHHHHCCC Q ss_conf 2------2345650677621344322222222223322222345420333234444201-35523888846646440788 Q gi|254780382|r 240 Q------SQDTMKNGIIFCNQKKNVVNLCHSLEKQGFSVCAIHGNIDQRSRMKILSNFK-EGTIQLMVASDLAARGLDIP 312 (465) Q Consensus 240 ~------~~~~~~k~iIF~~t~~~~~~l~~~L~~~g~~v~~lhg~l~~~~R~~~~~~F~-~g~~~vLV~Td~~~~GiDip 312 (465) T Consensus 230 ~~~~~s~~~~~G~sGIIYC~SR~~~e~~a~~L~~~G~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATvAFGMGInKp 309 (497) T TIGR00614 230 VKKASSAWEFKGKSGIIYCPSRKKSEQVAAELQKLGIAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATVAFGMGINKP 309 (497) T ss_pred HHHCCCCCCCCCCCEEEECCCCHHHHHHHHHHHHCCCEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEEECCCCCCCC T ss_conf 75203565245883027528723489999999755861002402688647789999875038857999872126888763 Q ss_pred CCCEEEEECCCCCHHHHHHHHHCCCCCCCCEEEEEEECHHHHHHHHHHH Q ss_conf 7650020024677899887521024588853999977888999999999 Q gi|254780382|r 313 DVGHVFNFDVPNRAENYIHRIGRTGRAGRHGKAFTLVAKEDIKHIDAIE 361 (465) Q Consensus 313 ~v~~VI~~d~P~~~~~y~hR~GR~gR~g~~G~~i~~~~~~d~~~~~~i~ 361 (465) T Consensus 310 dvRfViH~~~Pk~~EsYYQE~GRAGRDgl~s~c~lfy~~aD~~~~~~~l 358 (497) T TIGR00614 310 DVRFVIHYSLPKSMESYYQESGRAGRDGLPSECVLFYAPADIARLRRLL 358 (497) T ss_pred CCCEEEEECCCCCCCCCCCCCCCCCCCCCCCCEEEEECHHHHHHHHHHH T ss_conf 5367885078856211013555567897320102330435699998874

HHsearch alignment for GI: 254780382 and conserved domain: TIGR00614