>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=96.45 E-value=0.079 Score=31.53 Aligned_cols=255 Identities=24% Similarity=0.215 Sum_probs=133.3 Q ss_pred HHHHHHHHHCCC-CCEEEECCCCHHHHHH-HHHHCCCCCCCCHHHHCCHHHH------------HHHHHCCCCCEEECCC Q ss_conf 999998401288-8516741660245655-6663168971004542026775------------2666408764030568 Q gi|254780486|r 79 ELEEEAADFFGF-EKMLYFGSGYAANMAI-LSTLPQATDLIVYDKLVHASIR------------EGINSGKAQAIAIPHN 144 (381) Q Consensus 79 ~lE~~lA~~~g~-e~al~~~sG~~An~~~-i~~l~~~~d~ii~D~~~HaSi~------------~g~~ls~a~~~~f~Hn 144 (381) T Consensus 16 Q~e~I~~~L~g~RD~~vvMpTG~GKSLCYQ~Pa~~~~G~t~VIsPLi--SLm~DQV~~L~~~~i~A~~L~s~~s~----- 88 (497) T TIGR00614 16 QLEVINAVLEGRRDCLVVMPTGGGKSLCYQLPALYSDGLTLVISPLI--SLMEDQVLQLKASGIPATFLNSSQSK----- 88 (497) T ss_pred HHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHHHCCCCEEEECCHH--HHHHHHHHHHHHCCCCEECCCCCCCH----- T ss_conf 89999987548975699815898603676405675089649973636--56899999987448630104432577----- Q ss_pred CHHHHHHHHHHHHHCCCCCCCEEEE-CCCCCCCCCHHHHHHHHHHHHHCC-EEEEECCCCCCCCCCCCCCEEEEEHHC-- Q ss_conf 8147899764310002478607971-462157661346899999863136-089861311222347776401100001-- Q gi|254780486|r 145 NINSFAENINKWRKSGGKGFPWIVV-ESIYSMDGDKAPLDDLVKIANDYD-GFIVVDEAHATGVCGPLGKGLTHIIEE-- 220 (381) Q Consensus 145 D~~~Le~~l~~~~~~~~~~~~~vv~-egv~Sm~G~~apL~~i~~l~~~y~-~~LivDEah~~Gv~G~~G~G~~~~~~~-- 220 (381) T Consensus 89 --~~~~~v~~~~~~k~g~~kllYvtPE~~~---~~~~ll~~Le~~Y~~~~~~~iAvDEAHCiSqWGHDFR~~Y~~LG~Lk 163 (497) T TIGR00614 89 --EQQKEVLTDLSKKDGKLKLLYVTPEKIS---KSKSLLQTLEKLYERKGITLIAVDEAHCISQWGHDFRPDYKALGSLK 163 (497) T ss_pred --HHHHHHHHHHHHHCCCEEEEEECHHHHH---CCHHHHHHHHHHHHHCCCEEEEEECEEEECCCCCCCCHHHHHHHHHH T ss_conf --8999999998730797589971634653---46478999999886449669998321543588887407999965788 Q ss_pred --CCCCCCCCCCCCCCCCEEEEEEC---CCCCCCCCCCCCCCEECCCCCCCCHHHHHHHHHHHHHHCCCHHHHHHHHHHH Q ss_conf --34652100134656530267524---5100100001211000013577502578988789886271022478999999 Q gi|254780486|r 221 --RNNVIVMHSCSKALGSSGALVGS---NKIIYDYLINYAKPFIYTTSPSPILAVVACEALKLIKRKPALHKSLLQLINI 295 (381) Q Consensus 221 --~~~~iv~~TlsKa~g~~GG~i~~---~~~ii~~l~~~~~~~ifst~l~P~~~aaa~aal~~l~~~~~~~~~l~~~~~~ 295 (381) T Consensus 164 ~~fP~vP~~-----AL----TATA~~~~~~Di~~~L~-l~~p~~~~~SFdRPNl~-----y~v~~K~~n~~~~~~dl~~f 228 (497) T TIGR00614 164 QKFPNVPIM-----AL----TATASPSVREDILRILN-LKNPQVFITSFDRPNLY-----YEVRRKTSNTKKILEDLLRF 228 (497) T ss_pred HHCCCCCEE-----EE----ECCCCHHHHHHHHHHHC-CCCCCEEEECCCCCCCE-----EEEECCCCCHHHHHHHHHHH T ss_conf 854887436-----43----40578678999998722-13662464046687630-----34005789702589999999 Q ss_pred HHHHHHCCCCCCCCCCEEEEEECCHHHHHHHHHHHHHCCEEEEE-----------------------------ECCCCCC Q ss_conf 99876417978998972899958979999999999977918986-----------------------------2288888 Q gi|254780486|r 296 TDKIANKKIGFSSQSHIQSIVIGDNKSCLNIAKNLQKKGFDIRA-----------------------------IRPPTVP 346 (381) Q Consensus 296 ~~~~~~~~~g~~~~s~I~~v~~gd~~~a~~~~~~L~~~Gi~v~~-----------------------------i~~PtVp 346 (381) T Consensus 229 ~~~~~~s~~~~~G~sGI--IYC~SR~~~e~~a~~L~~~G~~a~aYHAGl~~~~R~~V~~~f~nrD~~QvVvATvAFGM-G 305 (497) T TIGR00614 229 IVKKASSAWEFKGKSGI--IYCPSRKKSEQVAAELQKLGIAAGAYHAGLEISARKEVQHKFQNRDEIQVVVATVAFGM-G 305 (497) T ss_pred HHHHCCCCCCCCCCCEE--EECCCCHHHHHHHHHHHHCCCEEEHHHCCCCHHHHHHHHHHHHCCCCCEEEEEEEECCC-C T ss_conf 87520356524588302--75287234899999997558610024026886477899998750388579998721268-8 Q ss_pred CCCCEEEEECCCCCCHH Q ss_conf 88703999628789999 Q gi|254780486|r 347 INTARLRISITLNVDEP 363 (381) Q Consensus 347 ~~~~rlRi~v~a~~t~e 363 (381) T Consensus 306 InKpdvRfViH~~~Pk~ 322 (497) T TIGR00614 306 INKPDVRFVIHYSLPKS 322 (497) T ss_pred CCCCCCCEEEEECCCCC T ss_conf 87635367885078856

HHsearch alignment for GI: 254780486 and conserved domain: TIGR00614