HHsearch alignment for GI: 254780941 and conserved domain: cd00879
>cd00879 Sar1 Sar1 subfamily. Sar1 is an essential component of COPII vesicle coats involved in export of cargo from the ER. The GTPase activity of Sar1 functions as a molecular switch to control protein-protein and protein-lipid interactions that direct vesicle budding from the ER. Activation of the GDP to the GTP-bound form of Sar1 involves the membrane-associated guanine nucleotide exchange factor (GEF) Sec12. Sar1 is unlike all Ras superfamily GTPases that use either myristoyl or prenyl groups to direct membrane association and function, in that Sar1 lacks such modification. Instead, Sar1 contains a unique nine-amino-acid N-terminal extension. This extension contains an evolutionarily conserved cluster of bulky hydrophobic amino acids, referred to as the Sar1-N-terminal activation recruitment (STAR) motif. The STAR motif mediates the recruitment of Sar1 to ER membranes and facilitates its interaction with mammalian Sec12 GEF leading to activation.
Probab=99.75 E-value=3e-17 Score=131.51 Aligned_cols=153 Identities=20% Similarity=0.244 Sum_probs=102.6
Q ss_pred CEEEEEECCCCCCHHHHHHHHHCCCEEEECCCCCCEEEEEEEEEEECCEEEEEEECCCCHHHCCCCCCCCCCHHHHHHHH
Q ss_conf 21899833899868899999868920210588886021278999739948999987984010123575321002345555
Q gi|254780941|r 22 SGCVALVGATNAGKSTLVNRFVGAKVSIVTHKVQTTRSIVRGIVSEKESQIVFLDTPGIFNAKDSYHKLMIRLSWSTIKH 101 (311)
Q Consensus 22 sg~VaivG~pN~GKSTL~N~l~g~~vsivS~k~~TTr~~i~gi~~~~~~qiifvDTPG~~~~~~~l~~~~~~~~~~~l~~ 101 (311)
T Consensus 19 ~~kIlilGld~aGKTTil~~l~~~~~~~~~PT~Gfn----~e~i~~~~~~~~~wDvgG~~--------~~R~lW~~Y~~~ 86 (190)
T cd00879 19 EAKILFLGLDNAGKTTLLHMLKDDRLAQHVPTLHPT----SEELTIGNIKFKTFDLGGHE--------QARRLWKDYFPE 86 (190)
T ss_pred CCEEEEEECCCCCHHHHHHHHHCCCCCEECCCCCCC----EEEEEECCEEEEEEECCCCC--------CCCCCHHHHHHC
T ss_conf 048999906999889999998079953152655874----59999899999999899984--------555438888431
Q ss_pred HHHHCCCCHHHHHHH-----CCHHHHHHHHHHCCCCCEEEEEECCCHHH---HHHHHHHHHHH--HC---------CCCC
Q ss_conf 321001100001000-----00001223454428720257872110104---34578888641--00---------1233
Q gi|254780941|r 102 ADIVCLVVDSHRELK-----VNIHDLLKEIAKRSSRLILILNKIDCVKP---ERLLEQAEIAN--KL---------VFIE 162 (311)
Q Consensus 102 aDiil~VvDa~~~~~-----~~~~~il~~l~~~~~p~IiVlNKiDlv~~---~~l~~~~~~~~--~~---------~~~~ 162 (311)
T Consensus 87 ~~~iIfVVDssD~~r~~eak~~L~~lL~~~~l~~~PlLIlaNK~Dl~~a~~~~ei~~~L~L~~~~~~~~~~~~~~~~r~~ 166 (190)
T cd00879 87 VDGIVFLVDAADPERFQESKEELDSLLSDEELANVPFLILGNKIDLPGAVSEEELRQALGLYGTTTGKGVSLKVSGIRPI 166 (190)
T ss_pred CCEEEEEEECCCHHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCCCCCCHHHHHHHCCCCCCCCCCCCCCCCCCCCCE
T ss_conf 13799999776778999999999999855500698089998666776798999999883984201554433454577614
Q ss_pred CCCCCCCCCCCCHHHHHHHHHHHC
Q ss_conf 431100013874267899999836
Q gi|254780941|r 163 KTFMVSATKGHGCDDVLNYLCSTL 186 (311)
Q Consensus 163 ~i~~ISAk~g~Gid~L~~~L~~~l 186 (311)
T Consensus 167 ~i~~csA~tG~Gl~egl~WLs~~l 190 (190)
T cd00879 167 EVFMCSVVKRQGYGEAFRWLSQYL 190 (190)
T ss_pred EEEEEEEECCCCHHHHHHHHHHHC
T ss_conf 999655067968289999998549