>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=99.80 E-value=6.1e-17 Score=120.87 Aligned_cols=308 Identities=18% Similarity=0.235 Sum_probs=186.1 Q ss_pred CCCHHHHHHHHHHHHCC-CEEEEECCCCCHHHHH-HHHHHHHHHCCCCCEEEEECC-HHHHHHHHHHHHHHCCCCCCEEE Q ss_conf 87478999999999679-8099958899868999-999999997599949999160-46569999999985588881599 Q gi|255764515|r 2 NLAPHQTKIVDWILDHK-RCAIWASMGSGKTVSV-LTALSYIHLWGEKSVLVIAPL-RVAQSVWTSEVQRWSNFSHMNIS 78 (458) Q Consensus 2 ~L~p~Q~~~v~~~~~~~-~~ll~~~~G~GKT~~a-l~~~~~l~~~~~~~~LIv~P~-~l~~~~W~~Ei~kf~~~~~~~~~ 78 (458) T Consensus 11 ~Frp~Q~e~I~~~L~g~RD~~vvMpTG~GKSLCYQ~Pa~---~~--~G~t~VIsPLiSLm~DQ-V~~L~~----~~i~A~ 80 (497) T TIGR00614 11 SFRPVQLEVINAVLEGRRDCLVVMPTGGGKSLCYQLPAL---YS--DGLTLVISPLISLMEDQ-VLQLKA----SGIPAT 80 (497) T ss_pred CCCHHHHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHH---HC--CCCEEEECCHHHHHHHH-HHHHHH----CCCCEE T ss_conf 455148999998754897569981589860367640567---50--89649973636568999-999874----486301 Q ss_pred EEECCHHHH--HH----H--HCCCCCEEEECCCCHHH---HHHHC---CCCCCCCEEECCCCCCCCCCCC--CCHHHHHH Q ss_conf 985897898--88----7--30779869980642023---34420---0011322044045310024654--31156777 Q gi|255764515|r 79 VITGTVKQR--TK----V--LKTPAVLYVINFENLGW---LVQEL---KGTWPFATIVVDESTKLKSFRL--RQGSKTAR 142 (458) Q Consensus 79 ~~~g~~~~r--~~----~--~~~~~~i~i~s~e~~~~---~~~~~---~~~~~~~~iIiDEaH~lkn~~~--~~~s~~~~ 142 (458) T Consensus 81 ~L~s~~s~~~~~~v~~~~~~k~g~~kllYvtPE~~~~~~~ll~~Le~~Y~~~~~~~iAvDEAHCiSqWGHDFR~~Y~~LG 160 (497) T TIGR00614 81 FLNSSQSKEQQKEVLTDLSKKDGKLKLLYVTPEKISKSKSLLQTLEKLYERKGITLIAVDEAHCISQWGHDFRPDYKALG 160 (497) T ss_pred CCCCCCCHHHHHHHHHHHHHHCCCEEEEEECHHHHHCCHHHHHHHHHHHHHCCCEEEEEECEEEECCCCCCCCHHHHHHH T ss_conf 04432577899999999873079758997163465346478999999886449669998321543588887407999965 Q ss_pred HHHHHHHCCCEEEEECCCCHHHHCCCHHHHHHHCCCCCCCCCCHHHHHHHHCCHHHHCCCHHHHHHHHHHHHHHHHHHHH Q ss_conf 76654305980799658402310010134677517888775327788777369564033000024555545589999974 Q gi|255764515|r 143 ALAKPAWESERFIELTGTPSPNGLIDLWGQIWFLDKGKRLGRVFQSFVARWFNTTQIGSHIGAVRYTAKETAQKEIEAQL 222 (458) Q Consensus 143 ~l~~~~~~~~~~l~LTgTPi~n~~~el~~ll~~l~~~~~l~~~~~~f~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~l 222 (458) T Consensus 161 ~Lk~~fP~vP-~~ALTATA~~~~~~Di~~~L~l~~p~~~~~--------------------------------------- 200 (497) T TIGR00614 161 SLKQKFPNVP-IMALTATASPSVREDILRILNLKNPQVFIT--------------------------------------- 200 (497) T ss_pred HHHHHCCCCC-EEEEECCCCHHHHHHHHHHHCCCCCCEEEE--------------------------------------- T ss_conf 7888548874-364340578678999998722136624640--------------------------------------- Q ss_pred HHHHHHHHCCCCCCCCCCCEEEEEEECCHHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCCCH Q ss_conf 24543320000100100110003452453689988899999985103345202234788887542035410002234300 Q gi|255764515|r 223 SDCCLSLDIADYQNIDKPILITKKVPLPQPVMKQYHKFQRELYCDLQGENIEAFNSASKTVKCLQLANGAVYYDEEKHWK 302 (458) Q Consensus 223 ~~~~~~~~~~~~~~l~~~~~~~~~v~l~~~~~~~y~~~~~~~~~~~~~~~~~~~~~~~~~~~l~q~~~~~~~~~~~~~~~ 302 (458) T Consensus 201 -------------SFdRPNl~y~v~~K~~n~~~~~~dl~~f~-~~-------------------~~~------------- 234 (497) T TIGR00614 201 -------------SFDRPNLYYEVRRKTSNTKKILEDLLRFI-VK-------------------KAS------------- 234 (497) T ss_pred -------------CCCCCCCEEEEECCCCCHHHHHHHHHHHH-HH-------------------HCC------------- T ss_conf -------------46687630340057897025899999998-75-------------------203------------- Q ss_pred HCCCCCCCCHHHHHHCCCCCEEEEHHHHHHHHHHHH----------HCCCCCCCHHHHHHHHHHHC-CCCCCEEEEEHHH Q ss_conf 013433332566541248840342223678886641----------00026533445899876424-5885589984422 Q gi|255764515|r 303 EVHDEKIKALEVIIEKANAAPIIVAYHFNSDLARLQ----------KAFPQGRTLDKDPCTIQEWN-EGKIPLLFAHPAS 371 (458) Q Consensus 303 ~~~~~k~~~l~~il~~~~~~kviif~~~~~~~~~i~----------~~~~~g~~~~~r~~~i~~f~-~~~~~vli~s~~~ 371 (458) T Consensus 235 ------------s~~~~~G~sGIIYC~SR~~~e~~a~~L~~~G~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATv-A 301 (497) T TIGR00614 235 ------------SAWEFKGKSGIIYCPSRKKSEQVAAELQKLGIAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATV-A 301 (497) T ss_pred ------------CCCCCCCCCEEEECCCCHHHHHHHHHHHHCCCEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEE-E T ss_conf ------------565245883027528723489999999755861002402688647789999875038857999872-1 Q ss_pred CCCCCCCCCCCCEEEEECCCCCHHHHHHHHHHHHCCCCHHCCCCCCEEEEEEE Q ss_conf 11162200178599990899898686445666620220203787752899998 Q gi|255764515|r 372 CGHGLNLQYGGNILVFFSLWWDLEEHQQMIERIGVTRQRQAGFKRAVFVYYLI 424 (458) Q Consensus 372 ~~~GlnL~~a~~~iI~~~~~wn~~~~~Q~~gRi~~~r~hR~Gq~~~v~v~~li 424 (458) T Consensus 302 FGMGInKpd-vRfViH~~~Pk~~EsYYQE~GRA-----GRDgl~s~c~lfy~~ 348 (497) T TIGR00614 302 FGMGINKPD-VRFVIHYSLPKSMESYYQESGRA-----GRDGLPSECVLFYAP 348 (497) T ss_pred CCCCCCCCC-CCEEEEECCCCCCCCCCCCCCCC-----CCCCCCCCEEEEECH T ss_conf 268887635-36788507885621101355556-----789732010233043

HHsearch alignment for GI: 255764515 and conserved domain: TIGR00614