HHsearch alignment for GI: 254780226 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=98.43 E-value=2e-06 Score=63.05 Aligned_cols=80 Identities=26% Similarity=0.435 Sum_probs=57.1
Q ss_pred CCEEEEEECCCCCHHHHHHHHHCCCCCCCCCCCCCCCCCCEEEEECCCHHHHHHHHHCCCCEEEEEEEEEEECCCCCCCC
Q ss_conf 82486752888788899998740489873666867448833799768555877764218650233579998512235432
Q gi|254780226|r 2 GFKCGIIGLPNVGKSTLFNALTRTASAQAANYPFCTIEPNSGEVAVPDPRMHKLAEIAESKDLVPTRMSFVDIAGLVRGA 81 (367)
Q Consensus 2 ~~kiGlvG~pn~GKST~f~alT~~~~~~~~~ypFtTi~pn~g~~~v~d~~~~~l~~~~~~~~~~p~~i~~iDvaGLv~gA 81 (367)
T Consensus 19 ~~kIlilGld~aGKTTil~~l~~~-~~-~~~~--PT~Gfn~e~i~~~~-----------------~~~~~wDvgG----~ 73 (190)
T cd00879 19 EAKILFLGLDNAGKTTLLHMLKDD-RL-AQHV--PTLHPTSEELTIGN-----------------IKFKTFDLGG----H 73 (190)
T ss_pred CCEEEEEECCCCCHHHHHHHHHCC-CC-CEEC--CCCCCCEEEEEECC-----------------EEEEEEECCC----C
T ss_conf 048999906999889999998079-95-3152--65587459999899-----------------9999998999----8
Q ss_pred CCCCCCHHHHHHHHHCCCEEEEEECCCC
Q ss_conf 2246632899998730374788501234
Q gi|254780226|r 82 SKGEGLGNQFLAHIREVDAIIHVLRCFK 109 (367)
Q Consensus 82 ~~G~GlGN~FL~~ir~aDalihVVdaf~ 109 (367)
T Consensus 74 ~~~R~lW~~Y---~~~~~~iIfVVDssD 98 (190)
T cd00879 74 EQARRLWKDY---FPEVDGIVFLVDAAD 98 (190)
T ss_pred CCCCCCHHHH---HHCCCEEEEEEECCC
T ss_conf 4555438888---431137999997767