>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=6e-38 Score=274.38 Aligned_cols=322 Identities=23% Similarity=0.347 Sum_probs=249.1 Q ss_pred HCCCCCCCHHHHHHHHHHHCCC-CEEEECCCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCEEEEECCCHHHHHHHHHHHH Q ss_conf 7879878989999999997599-699992898746899999999986104212255688279998499899999999999 Q gi|254780601|r 17 ERGYVNLTSVQEAILNPDLREK-DVLVSAQTGSGKTVAFGLALASTLLAENDRFSPASAPLALAIAPTRELAVQVGRELE 95 (573) Q Consensus 17 ~~g~~~pt~iQ~~~ip~~l~g~-d~i~~a~TGsGKT~af~lp~l~~l~~~~~~~~~~~~~~~lil~PTrELa~Qv~~~~~ 95 (573) T Consensus 6 ~FG~~~Frp~Q~e~I~~~L~g~RD~~vvMpTG~GKSLCYQ~Pa~~~------------~G~t~VIsPLiSL---m~DQV~ 70 (497) T TIGR00614 6 VFGLSSFRPVQLEVINAVLEGRRDCLVVMPTGGGKSLCYQLPALYS------------DGLTLVISPLISL---MEDQVL 70 (497) T ss_pred CCCCCCCCHHHHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHHHC------------CCCEEEECCHHHH---HHHHHH T ss_conf 1574445514899999875489756998158986036764056750------------8964997363656---899999 Q ss_pred HHHHHCCCEEEEEECCCCHHHHHH---HH--CCC-CEEEEECCCCHHH------HHHCCCCCCCCCEEEEEECCCCCCCC Q ss_conf 985446987999988998799999---61--289-7599822310133------21000122464318999613110010 Q gi|254780601|r 96 WLYAKTGVVVAVCIGGVSVHRERR---DL--QNG-AHIVVGTPGRLCD------HIRGKGLNISHLKAVVLDEADEMLDL 163 (573) Q Consensus 96 ~l~~~~~~~v~~~~gg~~~~~q~~---~l--~~~-~~iiv~TPgrl~d------~~~~~~l~l~~v~~lVlDEaD~ml~~ 163 (573) T Consensus 71 ~L~-~~~i~A~~L~s~~s~~~~~~v~~~~~~k~g~~kllYvtPE~~~~~~~ll~~Le-~~Y~~~~~~~iAvDEAHCiSqW 148 (497) T TIGR00614 71 QLK-ASGIPATFLNSSQSKEQQKEVLTDLSKKDGKLKLLYVTPEKISKSKSLLQTLE-KLYERKGITLIAVDEAHCISQW 148 (497) T ss_pred HHH-HCCCCEECCCCCCCHHHHHHHHHHHHHHCCCEEEEEECHHHHHCCHHHHHHHH-HHHHHCCCEEEEEECEEEECCC T ss_conf 987-44863010443257789999999987307975899716346534647899999-9886449669998321543588 Q ss_pred H--HHHHHHHH---HHHCCCCCCEEEEECCCCCCCHH-HHHH-HCCCCCCCCCCCCCCCCCCCCHHCCCCCCC-----HH Q ss_conf 0--12357888---75214334225631111222001-1112-101233332333232566520000000000-----02 Q gi|254780601|r 164 G--FRDDIEFI---LDSSPKKRRMLMFSATISPAITT-LAKN-YQKDAVRVNIASENRQHSDIDYRAVLVALS-----DR 231 (573) Q Consensus 164 g--f~~~i~~i---~~~~p~~~q~~l~SAT~~~~i~~-l~~~-~~~~p~~i~~~~~~~~~~~i~~~~~~v~~~-----~k 231 (573) T Consensus 149 GHDFR~~Y~~LG~Lk~~fP~v-P~~ALTATA~~~~~~Di~~~L~l~~p~~-~~~SFdR--PNl~---y~v~~K~~n~~~~ 221 (497) T TIGR00614 149 GHDFRPDYKALGSLKQKFPNV-PIMALTATASPSVREDILRILNLKNPQV-FITSFDR--PNLY---YEVRRKTSNTKKI 221 (497) T ss_pred CCCCCHHHHHHHHHHHHCCCC-CEEEEECCCCHHHHHHHHHHHCCCCCCE-EEECCCC--CCCE---EEEECCCCCHHHH T ss_conf 887407999965788854887-4364340578678999998722136624-6404668--7630---3400578970258 Q ss_pred HHHHHHCCC-------CCCCCEEEEECCCHHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHHHHHHH-CCCEEEEEECCC Q ss_conf 455420010-------235641677513023345655555422666301048999999999986654-488149985386 Q gi|254780601|r 232 DNAIVNILR-------YHGAKNAIVFCSTRASVSRFTKVLAEHLFQVVALSGELSQQERSNALQMMR-DGRARVCIATDV 303 (573) Q Consensus 232 ~~~l~~ll~-------~~~~~~~ivF~~t~~~~~~l~~~L~~~g~~~~~lhg~~~q~~R~~~~~~fr-~g~~~vLV~TDv 303 (573) T Consensus 222 ~~dl~~f~~~~~~s~~~~~G~sGIIYC~SR~~~e~~a~~L~~~G~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATvA 301 (497) T TIGR00614 222 LEDLLRFIVKKASSAWEFKGKSGIIYCPSRKKSEQVAAELQKLGIAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATVA 301 (497) T ss_pred HHHHHHHHHHHCCCCCCCCCCCEEEECCCCHHHHHHHHHHHHCCCEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEEE T ss_conf 99999998752035652458830275287234899999997558610024026886477899998750388579998721 Q ss_pred CCCCCCCCCCCEEEEECCCCCHHHHHHHHCCCCCCCCCCEEEEEECHHHHHHHHHHHHH Q ss_conf 50014578873389705887478999860301037888602564059999999999998 Q gi|254780601|r 304 AARGIDLPDLELVIHAELSSNPENLLHRSGRTGRAGRKGMSVFVIPQNMQRRAERLFRE 362 (573) Q Consensus 304 aaRGiDi~~v~~Vin~d~P~~~~~yvHR~GRtgRag~~G~ai~l~~~~e~~~~~~i~~~ 362 (573) T Consensus 302 FGMGInKpdvRfViH~~~Pk~~EsYYQE~GRAGRDgl~s~c~lfy~~aD~~~~~~~l~e 360 (497) T TIGR00614 302 FGMGINKPDVRFVIHYSLPKSMESYYQESGRAGRDGLPSECVLFYAPADIARLRRLLVE 360 (497) T ss_pred CCCCCCCCCCCEEEEECCCCCCCCCCCCCCCCCCCCCCCCEEEEECHHHHHHHHHHHEE T ss_conf 26888763536788507885621101355556789732010233043569999887400

HHsearch alignment for GI: 254780601 and conserved domain: TIGR00614