>TIGR00483 EF-1_alpha translation elongation factor EF-1, subunit alpha; InterPro: IPR004539 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. EF1A (also known as EF-1alpha or EF-Tu) is a G-protein. It forms a ternary complex of EF1A-GTP-aminoacyltRNA. The binding of aminoacyl-tRNA stimulates GTP hydrolysis by EF1A, causing a conformational change in EF1A that causes EF1A-GDP to detach from the ribosome, leaving the aminoacyl-tRNA attached at the A-site. Only the cognate aminoacyl-tRNA can induce the required conformational change in EF1A through its tight anticodon-codon binding , . EF1A-GDP is returned to its active state, EF1A-GTP, through the action of another elongation factor, EF1B (also known as EF-Ts or EF-1beta/gamma/delta). This entry represents EF1A proteins found primarily in eukaryotic (eEF1A) and archaeal (aEF1A) organisms, these proteins being more closely related to one another than to EF1A (or EF-Tu) found in bacteria (IPR004541 from INTERPRO). 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=98.39 E-value=4.1e-07 Score=62.93 Aligned_cols=146 Identities=21% Similarity=0.291 Sum_probs=84.1 Q ss_pred EEEECEEEEECCCCCCCEEEEEECCCCCHH-----------------HHHHHC--------------CCEECCEEEEECC Q ss_conf 763011244216777530354101454012-----------------121100--------------0000102663298 Q gi|254780648|r 157 KLIADIGIIGLPNAGKSTFLASVTRAKPKI-----------------ADYPFT--------------TLYPNLGIVKEGY 205 (335) Q Consensus 157 k~iaDVglVG~PNaGKSTLln~ls~ak~kI-----------------a~ypFT--------------T~~P~lGvv~~~~ 205 (335) T Consensus 5 K~~~Nv~~IGHVD~GKST~~G~Lly~~G~I~~~~~eK~~kEa~e~GK~~F~fa~V~D~Lk~ERERGvTID~A~~KFeT~K 84 (445) T TIGR00483 5 KEHINVAFIGHVDHGKSTLVGRLLYKAGAIDEQLLEKLKKEAQEKGKASFEFAWVMDRLKEERERGVTIDVAHKKFETDK 84 (445) T ss_pred CCEEEEEEEEEEECCCCHHHHHHHHHCCCCCHHHHHHHHHHHHHCCCCEEEEEEEECCCCCCCCCCCHHHHHHHHCCCCC T ss_conf 43244899825408850266777754289658999999875755187303676543110000015622433445417885 Q ss_pred EEEEEECCCC-------CCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCCCCHH----HHHHHHHHHHHHHHHHHCCCCE Q ss_conf 6899822642-------1247311677512344333335788752022221101----3466678998777667505988 Q gi|254780648|r 206 KEFILADIPG-------IIKNAHQGAGIGDRFLKHTERTHVLLHIVSALEENVQ----AAYQCILDELSAYNSELRKKIE 274 (335) Q Consensus 206 ~~~~i~D~PG-------lIegA~~~~glG~~FLrhIer~~vLl~VVD~s~~d~~----~~~~~I~~EL~~y~~~L~~Kp~ 274 (335) T Consensus 85 Y~~TivDcPGHRDFiKNMITGaSQ--------------ADaAvLv~~v~~~~~~ag~~~~pQT-rE-H~~La~TLGi~Ql 148 (445) T TIGR00483 85 YEVTIVDCPGHRDFIKNMITGASQ--------------ADAAVLVVAVDDGEFEAGISVQPQT-RE-HVFLARTLGINQL 148 (445) T ss_pred EEEEEEECCCCCHHHHHCCCCCCC--------------CCEEEEEEECCCCCCCCCEEECCCC-HH-HHHHHHHHCCEEE T ss_conf 169998469870134311266751--------------2427999952544102401217860-57-7888775032045 Q ss_pred EEEEECCCCCC--HHHHHHHHHHHHH----HCCC-----CEEEEECCCCCCHHHH Q ss_conf 99997465899--8899999999998----6299-----4899988878899999 Q gi|254780648|r 275 IVGLSQIDTVD--SDTLARKKNELAT----QCGQ-----VPFEFSSITGHGIPQI 318 (335) Q Consensus 275 IIVlNKiDl~~--~e~~~~~~~~l~~----~~~~-----~vi~ISA~tg~GI~eL 318 (335) T Consensus 149 iVAiNKMD~V~yd~~~f~~~~~~~s~~l~K~vGY~p~~v~FiP~s~~~GDN~~~~ 203 (445) T TIGR00483 149 IVAINKMDSVNYDEEEFEALKKEVSEQLLKKVGYKPDEVPFIPISAFEGDNVIKK 203 (445) T ss_pred EEEECCCCCEECCHHHHHHHHHHHHHHHHHHHCCCCCCCCEEEECCCCCCCHHHH T ss_conf 3331024610027789999999999989987488756123254035467613433

HHsearch alignment for GI: 254780648 and conserved domain: TIGR00483