HHsearch alignment for GI: 254780150 and conserved domain: TIGR00490

>TIGR00490 aEF-2 translation elongation factor aEF-2; InterPro: IPR004543 Translation elongation factors are responsible for two main processes during protein synthesis on the ribosome , , . EF1A (or EF-Tu) is responsible for the selection and binding of the cognate aminoacyl-tRNA to the A-site (acceptor site) of the ribosome. EF2 (or EF-G) is responsible for the translocation of the peptidyl-tRNA from the A-site to the P-site (peptidyl-tRNA site) of the ribosome, thereby freeing the A-site for the next aminoacyl-tRNA to bind. Elongation factors are responsible for achieving accuracy of translation and both EF1A and EF2 are remarkably conserved throughout evolution. Elongation factor EF2 (EF-G) is a G-protein. It brings about the translocation of peptidyl-tRNA and mRNA through a ratchet-like mechanism: the binding of GTP-EF2 to the ribosome causes a counter-clockwise rotation in the small ribosomal subunit; the hydrolysis of GTP to GDP by EF2 and the subsequent release of EF2 causes a clockwise rotation of the small subunit back to the starting position , . This twisting action destabilises tRNA-ribosome interactions, freeing the tRNA to translocate along the ribosome upon GTP-hydrolysis by EF2. EF2 binding also affects the entry and exit channel openings for the mRNA, widening it when bound to enable the mRNA to translocate along the ribosome. This entry represents archaeal EF2 proteins (also known as aEF2), which are more similar to eukaryotic EF2 than to bacterial EF2 (or EFG), both in sequence similarity and in sharing with eukaryotes the property of having a diphthamide (modified His) residue at a conserved position. The diphthamide can be ADP-ribosylated by diphtheria toxin in the presence of NAD. More information about these proteins can be found at Protein of the Month: Elongation Factors .; GO: 0003746 translation elongation factor activity, 0005525 GTP binding, 0006414 translational elongation, 0005737 cytoplasm.
Probab=100.00  E-value=1.7e-37  Score=251.49  Aligned_cols=276  Identities=28%  Similarity=0.418  Sum_probs=202.6

Q ss_pred             EEEEEECCCCCHHHHHHHHHHHHH----HHHHCCCCCCCCHHHHHCCCEEEEEEEE----EECCCEEEEEEECCCCHHHH
Q ss_conf             999990468988789999998764----4420013126868698629206378999----82199089998478730246
Q gi|254780150|r   14 GLSTIGHVDHGKTTLTAAITKYYS----EEKKEYGDIDSAPEEKLRGITIATAHVS----YETDKRFYSHIDCPGHADYV   85 (392)
Q Consensus        14 ni~~iGhvd~GKSTL~~~L~~~~~----~~~~~~~~~D~~~~E~~rGiTi~~~~~~----~~~~~~~i~iiD~PGH~~f~   85 (392)
T Consensus        21 niGi~ahidhGkttlsdnllaGaGmis~elaG~q~~ldfde~e~~rGiti~aanvsmvh~yeG~~ylinlidtPGhvdfG  100 (724)
T TIGR00490        21 NIGIVAHIDHGKTTLSDNLLAGAGMISEELAGEQLYLDFDEQEQERGITIDAANVSMVHEYEGNEYLINLIDTPGHVDFG  100 (724)
T ss_pred             HEEEEEEECCCCCHHHHHHHHCCCHHHHHHCCCCEEECCCHHHHHCCCEEEEEEEEEEEEECCCCEEEEEECCCCCCCCC
T ss_conf             00037863177511223444213323454056410002441352377267641156765314750243331488621056


Q ss_pred             HHHHHHHHCCCCEEEEECCCCCCCCCHHHHHHHHHHCCCCCEEEEECCCCCC------CC---HHHHHHCCCCCCEEEEE
Q ss_conf             7798774002331452012344332106778888631876023310023335------61---22211012321001110
Q gi|254780150|r   86 KNMITGATQADGAILVCAAEDGPKPQTREHILLARQIGISSIVVYMNKVDAV------DD---DELLDISEYEIRDLLKE  156 (392)
Q Consensus        86 ~~mi~g~~~~D~ailvVda~~G~~~QT~eh~~l~~~lgi~~iIv~iNKmD~v------~~---~~~~~~i~~~i~~~l~~  156 (392)
T Consensus       101 Gdvtramra~dG~~vvv~aveG~mPqtetvlrqal~e~v~Pv-lf~nkvdrli~el~l~~~~lq~r~~k~i~~~n~li~~  179 (724)
T TIGR00490       101 GDVTRAMRAVDGAIVVVCAVEGVMPQTETVLRQALKENVKPV-LFINKVDRLINELKLTPEELQERLIKIIAEVNKLIKK  179 (724)
T ss_pred             CHHHHHHHHHCCEEEEEEECCCCCCCHHHHHHHHHHHCCCEE-EEEHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHH
T ss_conf             248888776476389995025657615789999987318706-7723478888862468889999999999999999974


Q ss_pred             E---EEEEEE-------ECCCCEEEEEEECCCCCCCC---------------------CC---CCCHHHHHHCCCCCCC-
Q ss_conf             1---453221-------02331146764114445652---------------------12---3320344310252222-
Q gi|254780150|r  157 H---KYSDDT-------PIIRGSALCALQGTNKELGE---------------------DS---IHALMKAVDTHIPTPQ-  201 (392)
Q Consensus       157 ~---~~~~~~-------pii~~sa~~g~~~~n~~~~~---------------------~~---~~~Ll~~i~~~~~~p~-  201 (392)
T Consensus       180 m~P~~~~~~W~~~v~~Gs~afGsa~~nWa~~vP~~~~~Gi~f~~~~~~~~e~~~~ela~k~Pl~~v~l~mv~~hlPsP~e  259 (724)
T TIGR00490       180 MAPEEFKDKWKVRVEDGSVAFGSAYYNWAISVPIMKKTGITFKDIYKYIKEDKQKELAKKAPLHQVVLDMVIKHLPSPAE  259 (724)
T ss_pred             CCCCCHHCCCEEEECCCCCHHHHHHHHHEEECCCCCCCCCCHHHHHHHHHCCHHHHHHHHCCHHHHHHHHHHHHCCCCHH
T ss_conf             17610000004765156410112221000204430013775999999863011455764065889999999974489622


Q ss_pred             ------------------------CCCCCCCCEECCCCCCCCCCCCCEEEEEEECCCCCCCEEEEEECCCCCCCEEEECC
Q ss_conf             ------------------------10000110000000135544543014874245348967999506874321254121
Q gi|254780150|r  202 ------------------------RSLDAPFLMHIEGSCGIEGRGTVVTGCIKRGRIKAGSDVEIIGMGGKKLKVKCTDV  257 (392)
Q Consensus       202 ------------------------~~~~~p~r~~I~~vf~i~g~G~Vv~GrV~sG~l~~Gd~i~i~p~~~~~~~~kv~si  257 (392)
T Consensus       260 ~q~~r~~~~W~Gd~~se~G~am~~~dP~GP~a~~~t~~~~~~~aG~~~~~r~y~G~i~~G~e~y~v~~~~k-~~~q~v~~  338 (724)
T TIGR00490       260 AQKYRIPVIWKGDLNSEAGKAMLNCDPEGPLAVMITKIVVDKHAGEVAVGRLYSGAIKKGSEVYLVDRKAK-ARIQQVGV  338 (724)
T ss_pred             HHHHHHHHHEECCCCCHHCCHHCCCCCCCCEEEEEEEEEEECCCCCEEEEEEECCEECCCCEEEEECCHHH-CCEEEEEE
T ss_conf             44401001010465400054210048998614455655660366816775553150036866898643000-21124667


Q ss_pred             CCC--CCCCCCCCCCHHHHHHHCCCCCCEEECHHEEECCC
Q ss_conf             001--21144321001366641124543220211773267
Q gi|254780150|r  258 EMF--RKKLDEAIAGDNVGLLLRGVNRADVPRGRVVCAPG  295 (392)
Q Consensus       258 ~~~--~~~v~~a~aGd~v~l~Lkgi~~~di~rGdvl~~~~  295 (392)
T Consensus       339 ymGP~r~~~d~~~aGni~a~~----G~k~a~aG~t~C~~~  374 (724)
T TIGR00490       339 YMGPERVEVDEIPAGNIVAVV----GLKEAVAGETICSTD  374 (724)
T ss_pred             EECCEECCCCCCCCCCEEEEE----ECCCCCCCCCCCCCH
T ss_conf             766702012422677568874----032111453002521