>cd00984 DnaB_C DnaB helicase C terminal domain. The hexameric helicase DnaB unwinds the DNA duplex at the chromosome replication fork. Although the mechanism by which DnaB both couples ATP hydrolysis to translocation along DNA and denatures the duplex is unknown, a change in the quaternary structure of the protein involving dimerization of the N-terminal domain has been observed and may occur during the enzymatic cycle. This C-terminal domain contains an ATP-binding site and is therefore probably the site of ATP hydrolysis.

Probab=99.93 E-value=4.5e-24 Score=195.15 Aligned_cols=190 Identities=21% Similarity=0.329 Sum_probs=143.9 Q ss_pred HHHHHHHCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHH-CCCCCEEEEECCCCHHHHHHHHH--HCCCC---------- Q ss_conf 248888659857870899954987518899999999985-03981999986463047888875--20157---------- Q gi|254780334|r 77 DELDRVTGGGFVRGSVILVGGDPGIGKSTLLMQTAASLA-YKKHRITYVSGEEAIGQIRLRAQ--RLNTI---------- 143 (479) Q Consensus 77 ~eLDrvLGGGl~~Gs~~Li~G~PGvGKSTL~Lqia~~~a-~~g~~vlYvS~EEs~~Qi~~Ra~--Rl~~~---------- 143 (479) T Consensus 1 ~eLD~~~-gG~~~G~L~vi~a~~g~GKS~~~~~la~~~a~~~g~~V~~~SlEm~~~~~~~R~~s~~~~i~~~~i~~~~~~ 79 (242) T cd00984 1 TDLDNLT-GGLQPGDLIIIAARPSMGKTAFALNIAENIAKKQGKPVLFFSLEMSKEQLLQRLLASESGISLSKLRTGSLS 79 (242) T ss_pred CCHHHHH-CCCCCCCEEEEEECCCCCHHHHHHHHHHHHHHHCCCCEEEEECCCCHHHHHHHHHHHHHCCCHHHHHCCCCC T ss_conf 9523431-699998189999689999999999999999997799599993335388999999999829774553026522 Q ss_pred ---------------CCCHHEEC--CCCHHHHH---HHHHHCCCCCEEEECHHHHHHHHHHCCCCCCHHHHHHHHHHHHH Q ss_conf ---------------75100003--47889999---99973169828997216876654204455636799999999999 Q gi|254780334|r 144 ---------------NSSVYIAI--ETNVEDII---ATLITNEKPDLVIIDSIQTLWSQTAESSPGTVIQVRTSVQAMIQ 203 (479) Q Consensus 144 ---------------~~~i~~~~--e~~l~~il---~~~i~~~~~~~vVIDSIQtl~~~~~~s~~GsvsQvre~~~~L~~ 203 (479) T Consensus 80 ~~~~~~~~~~~~~~~~~~l~i~d~~~~t~~~i~~~ir~~~~~~~~~~vvvDylql~~~~~~~--~~~~~~i~~i~~~Lk~ 157 (242) T cd00984 80 DEDWERLAEAIGELKELPIYIDDSSSLTVSDIRSRARRLKKEHGLGLIVIDYLQLMSGSKKK--GNRQQEVAEISRSLKL 157 (242) T ss_pred HHHHHHHHHHHHHHCCCCEEEECCCCCCHHHHHHHHHHHHHHCCCCEEEEEHHHHCCCCCCC--CCHHHHHHHHHHHHHH T ss_conf 79999999999986169889966999999999999999988369989998269854677766--5799999999999999 Q ss_pred HHHHCCCEEEEEEEECCCC-----------CCCCHHHHHHHHHEEEEEECCC----CCCCCCCEEEEEEEECCCCCCCEE Q ss_conf 7530797899986303665-----------4331145787753027851555----666544215676320256765127 Q gi|254780334|r 204 YAKKNGVAMVLVGHVTKEG-----------QIAGPRVIEHMVDAVLYFEGGT----RNTQYDYRILRSVKNRFGPTDEIG 268 (479) Q Consensus 204 ~AK~~~i~vilighvTK~G-----------~iAGp~~LeH~VD~vl~~ege~----~~~~~~~R~Lr~~KNRfG~t~e~g 268 (479) T Consensus 158 lA~e~~v~Vi~~sQlnR~~~~~~~~~p~l~dl~~S~~ieq~AD~vl~l~R~~~~~~~~~~~~~~~l~v~KnR~G~~G~v~ 237 (242) T cd00984 158 LAKELNVPVIALSQLSRGVESRADKRPMLSDLRESGSIEQDADVVMFLYRDEYYNKESESKGIAEIIVAKNRNGPTGTVE 237 (242) T ss_pred HHHHHCCEEEEEECCCCCCCCCCCCCCCCCHHHHHHHHHHCCCEEEEEECCCCCCCCCCCCCEEEEEEEECCCCCCCEEE T ss_conf 99997993999846786612278988660122332000201749999851434576577898489999816899985499 Q ss_pred E Q ss_conf 9 Q gi|254780334|r 269 V 269 (479) Q Consensus 269 v 269 (479) T Consensus 238 l 238 (242) T cd00984 238 L 238 (242) T ss_pred E T ss_conf 9

HHsearch alignment for GI: 254780334 and conserved domain: cd00984