>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=98.63 E-value=3.4e-05 Score=58.79 Aligned_cols=330 Identities=21% Similarity=0.275 Sum_probs=256.4 Q ss_pred CHHHHHHHHHHHHHCCCCCCCCEEEECCCCCCHHHHHHHHHHHHHCCCCEEEEEECHH-HHHHHHHHHHHHHHCCCCCCE Q ss_conf 7448999999987605988541443166543248999999987511275499982436-655589999998606789833 Q gi|254780947|r 627 TEDQEKAIDAVIQDLSSGRLMDRLICGDVGFGKTEIALRAAFIAVMNGLQVAVIAPTT-LLVRQHFRLFSERFQGFSVRI 705 (1187) Q Consensus 627 T~DQ~~AI~eV~~Dmes~~PMDRLiCGDVGfGKTEVA~RAafkav~~gkQvavlvPTT-iLa~QH~~tf~~Rf~~~pv~i 705 (1187) T Consensus 13 rp~Q~e~I~~~L~g~-----RD~~vvMpTG~GKS---LCYQ~Pa~~~~G~t~VIsPLiSLm~DQ-----V~~L~~~~i~A 79 (497) T TIGR00614 13 RPVQLEVINAVLEGR-----RDCLVVMPTGGGKS---LCYQLPALYSDGLTLVISPLISLMEDQ-----VLQLKASGIPA 79 (497) T ss_pred CHHHHHHHHHHHCCC-----CCEEEEECCCCCHH---HHHHHHHHHCCCCEEEECCHHHHHHHH-----HHHHHHCCCCE T ss_conf 514899999875489-----75699815898603---676405675089649973636568999-----99987448630 Q ss_pred EEECCCCCCHHHHHHHHHH--CCCCCEEEEEC-------HHHHCCC---CCCCCCCEEEEECHH---------HHHHHHH Q ss_conf 5410666302567777531--22576089852-------0654278---520236569972223---------3008889 Q gi|254780947|r 706 ASISRFVQTKEAALHKKSI--TEGQVDIVIGT-------HALLNPK---ITFANLGLIIIDEEQ---------HFGVKHK 764 (1187) Q Consensus 706 ~~lsRf~~~~e~~~i~~~l--~~G~idiviGT-------H~ll~~~---v~f~~LgLliiDEEq---------rFGV~~K 764 (1187) 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 HHHHHCCCCCCEEEEECCCCCHHHH--HHHHCCCCCCEEECCCCCCCCEEEEEEECC--HHHHHHHHHHHHH-------- Q ss_conf 9886316788489995353408899--997122254122015788775379998579--7898999998987-------- Q gi|254780947|r 765 EALKETHTGVHVLTLSATPIPRTLQ--LAITGVRELSLISMPPINRIACRTSISIFD--PLVVRETLMREYY-------- 832 (1187) Q Consensus 765 e~lk~~~~~vdvLtlsATPIPRTL~--msl~g~rd~S~i~tpP~~R~~v~T~v~~~~--~~~i~~ai~rEl~-------- 832 (1187) 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 GSLKQKFPNVPIMALTATASPSVREDILRILNLKNPQ-VFITSFDRPNLYYEVRRKTSNTKKILEDLLRFIVKKASSAWE 238 (497) T ss_pred HHHHHHCCCCCEEEEECCCCHHHHHHHHHHHCCCCCC-EEEECCCCCCCEEEEECCCCCHHHHHHHHHHHHHHHCCCCCC T ss_conf 5788854887436434057867899999872213662-464046687630340057897025899999998752035652 Q ss_pred HCCEE-EEEECCCCCHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHHHHH-CCCCCEEEECCCEECCCCCCCCCEEEE Q ss_conf 18859-9982644692889999986165464888613467478999999996-388757976102003633223326676 Q gi|254780947|r 833 RGGQS-FYVCPRLSDLEKCYTFLQSEVPELKIAMAHGQMSPKNLEDKMNAFY-EGQYDVLLSTSIVESGLDLPKANTMIV 910 (1187) Q Consensus 833 RgGQv-f~v~nrv~~i~~~~~~l~~l~p~~~i~vaHGqm~~~~le~~m~~F~-~~~~dvLv~TtIiEsGlDip~aNTiii 910 (1187) T Consensus 239 ~~G~sGIIYC~SR~~~e~~a~~L~~~G--~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATvAFGMGInKpdvRfViH 316 (497) T TIGR00614 239 FKGKSGIIYCPSRKKSEQVAAELQKLG--IAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATVAFGMGINKPDVRFVIH 316 (497) T ss_pred CCCCCEEEECCCCHHHHHHHHHHHHCC--CEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEEECCCCCCCCCCCEEEE T ss_conf 458830275287234899999997558--610024026886477899998750388579998721268887635367885 Q ss_pred ECHHHCCCCHHHHHHHHCCCCCCCCEEEEEECCCCCCCHHHHHHHHHHHHHCCCCHHHHHHHHHHHHCCCCCCCCCCCCC Q ss_conf 25023588604553221035676736999966888889889999999997255652489999998511630004611155 Q gi|254780947|r 911 QRADMFGLAQLYQLRGRVGRSKIASFALFLLPENRPLTAAAQKRLRILQSLNTLGAGFQLASYDLDIRGTGNLLGEEQSG 990 (1187) Q Consensus 911 ~~ad~~GLaqlyQlrGRVGRs~~~ayayl~~~~~~~l~~~a~kRL~ai~~~~~lGsGf~iA~~DleiRGaG~llG~~QsG 990 (1187) T Consensus 317 ~~~Pk-~~EsYYQE~GRAGRDgl~s~c~lfy~~aD----~--~~~~-------------------------~~l~e~~~~ 364 (497) T TIGR00614 317 YSLPK-SMESYYQESGRAGRDGLPSECVLFYAPAD----I--ARLR-------------------------RLLVEEPDG 364 (497) T ss_pred ECCCC-CCCCCCCCCCCCCCCCCCCCEEEEECHHH----H--HHHH-------------------------HHHEECCCC T ss_conf 07885-62110135555678973201023304356----9--9998-------------------------874004577 Q ss_pred C---HHHHHHHHHHHHH Q ss_conf 3---8983389999999 Q gi|254780947|r 991 H---IREIGFELYQKML 1004 (1187) Q Consensus 991 ~---i~~vG~~ly~~ml 1004 (1187) T Consensus 365 ~~ht~~~~~~~~~~~~~ 381 (497) T TIGR00614 365 KYHTQRTYKLKLLEKVE 381 (497) T ss_pred CHHHHHHHHHHHHHHHH T ss_conf 51578999999999999

HHsearch alignment for GI: 254780947 and conserved domain: TIGR00614