HHsearch alignment for GI: 254780806 and conserved domain: TIGR01425

>TIGR01425 SRP54_euk signal recognition particle protein SRP54; InterPro: IPR006325 The signal recognition particle (SRP) is a multimeric protein, which along with its conjugate receptor (SR), is involved in targeting secretory proteins to the rough endoplasmic reticulum (RER) membrane in eukaryotes, or to the plasma membrane in prokaryotes , . SRP recognises the signal sequence of the nascent polypeptide on the ribosome, retards its elongation, and docks the SRP-ribosome-polypeptide complex to the RER membrane via the SR receptor. SRP consists of six polypeptides (SRP9, SRP14, SRP19, SRP54, SRP68 and SRP72) and a single 300 nucleotide 7S RNA molecule. The RNA component catalyses the interaction of SRP with its SR receptor . In higher eukaryotes, the SRP complex consists of the Alu domain and the S domain linked by the SRP RNA. The Alu domain consists of a heterodimer of SRP9 and SRP14 bound to the 5' and 3' terminal sequences of SRP RNA. This domain is necessary for retarding the elongation of the nascent polypeptide chain, which gives SRP time to dock the ribosome-polypeptide complex to the RER membrane. This entry represents the 54 kDa SRP54 component, a GTP-binding protein that interacts with the signal sequence when it emerges from the ribosome. SRP54 of the signal recognition particle has a three-domain structure: an N-terminal helical bundle domain, a GTPase domain, and the M-domain that binds the 7s RNA and also binds the signal sequence. The extreme C-terminal region is glycine-rich and lower in complexity and poorly conserved between species.; GO: 0005525 GTP binding, 0008312 7S RNA binding, 0006614 SRP-dependent cotranslational protein targeting to membrane, 0048500 signal recognition particle.
Probab=97.98  E-value=1.8e-05  Score=51.42  Aligned_cols=146  Identities=21%  Similarity=0.282  Sum_probs=76.1

Q ss_pred             CCCCEEEEEECCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCCCCHHHCCCCCCCCCCEEEEEECCCCHHHCCCCCC
Q ss_conf             76874999980889888899999999999987995999987877680112124633345411676302577121024444
Q gi|254780806|r    3 EKKSRIITIANQKGGVGKTTTAINLSTALAAIGENVLLIDLDPQGNASTGLGIELYDRKYSSYDLLIEEKNINQILIQTA   82 (265)
Q Consensus         3 ~~~~kvI~v~s~KGGvGKTT~a~nlA~~la~~g~rVllID~D~q~~~~~~l~~~~~~~~~ti~~~l~~~~~l~~~i~~~~   82 (265)
T Consensus       118 Kgk~~ViMfV-GLQGaGKTTtctKLA~YYk~rGfK~~lvCADTFR--------------AGAFdQLkq--NA~kA~iP--  178 (453)
T TIGR01425       118 KGKSSVIMFV-GLQGAGKTTTCTKLAYYYKRRGFKPALVCADTFR--------------AGAFDQLKQ--NATKAKIP--  178 (453)
T ss_pred             CCCCEEEEEE-ECCCCCHHHHHHHHHHHHHCCCCCEEEECCCCCC--------------CCHHHHHHH--HHHHCCCC--
T ss_conf             6882158886-2148871566878777763266432565177542--------------324899987--47644897--


Q ss_pred             CCCEEECCCCCCCCCCC-CCCCCCCCCCHHHHHHHHHHHHCCCCCCEEEECCCC---CCCCCCHHHH-----HHHCCCCC
Q ss_conf             44200014887457750-001232222102333224765102782033101333---2222101123-----31001111
Q gi|254780806|r   83 IPNLSIIPSTMDLLGIE-MILGGEKDRLFRLDKALSVQLTSDFSYIFLDCPPSF---NLLTMNAMAA-----ADSILVPL  153 (265)
Q Consensus        83 ~~~l~iipa~~~~~~~~-~~l~~~~~~~~~l~~~l~~~l~~~yD~IiiD~pp~~---~~~~~~al~a-----ad~viip~  153 (265)
T Consensus       179 FYGsy--------~E~DPVkiA~E--Gv~~Fk-------~E~~diIivDTSGRHkQe~~LF~Em~qv~~Ai~Pd~iifVM  241 (453)
T TIGR01425       179 FYGSY--------LESDPVKIASE--GVEKFK-------KEKFDIIIVDTSGRHKQEEELFEEMVQVAEAIKPDSIIFVM  241 (453)
T ss_pred             CCCCC--------CCCCCEEEECC--CHHHHH-------CCCCCEEEEECCCCCHHHHHHHHHHHHHHHCCCCCCEEEEE
T ss_conf             12010--------48987078002--011322-------12784799837987322588889987686334998369980


Q ss_pred             CCCC--HHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCEEECCC
Q ss_conf             1231--13788875335777655432026774310020231253
Q gi|254780806|r  154 QCEF--FALEGLSQLLETVEEVRRTVNSALDIQGIILTMFDSRN  195 (265)
Q Consensus       154 ~p~~--~s~~~~~~~~~~i~~~~~~~~~~~~~~~iv~N~~~~~~  195 (265)
T Consensus       242 DGsIGQAA~~QA-----------kAFK~~~~vGSvIiTKLDGHA  274 (453)
T TIGR01425       242 DGSIGQAAFSQA-----------KAFKDSVEVGSVIITKLDGHA  274 (453)
T ss_pred             CCCHHHHHHHHH-----------HHHHHCCCCEEEEEECCCCCC
T ss_conf             661667889999-----------986300350038875156776