HHsearch alignment for GI: 254780709 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=96.87  E-value=0.0028  Score=43.37  Aligned_cols=98  Identities=16%  Similarity=0.218  Sum_probs=52.8

Q ss_pred             CCCCCCEEECCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHHH
Q ss_conf             36674123113544444247899999998522674267743451245688999997530353212235866124542289
Q gi|254780709|r  107 FSHRPHVILVVGVNGVGKTTVIGKLSKKMSDAGLKVMLAAGDTFRSAAIDQLKIWADRTSADFVCSEIGSDAAALAYEAF  186 (321)
Q Consensus       107 ~~~~p~vil~vG~nG~GKTTT~aKLA~~~~~~g~kV~lva~DtfR~aA~eQL~~~a~~~~v~~~~~~~~~dp~~v~~~a~  186 (321)
T Consensus        15 ~~~k~~kIlilGld~aGKTTil~~l~-----~~~~~~~----------------------~PT~Gfn------------~   55 (190)
T cd00879          15 LYNKEAKILFLGLDNAGKTTLLHMLK-----DDRLAQH----------------------VPTLHPT------------S   55 (190)
T ss_pred             CCCCCCEEEEEECCCCCHHHHHHHHH-----CCCCCEE----------------------CCCCCCC------------E
T ss_conf             65770489999069998899999980-----7995315----------------------2655874------------5


Q ss_pred             HHHHHHCCCEEEEECCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHH
Q ss_conf             999651487599865433321157789999899876302223430112310233522577899987643
Q gi|254780709|r  187 KQAQAKKVDVLIIDTAGRLHNNSILMAGIGKMIRVLKRLDPHAPHSVLQVLDATTGQNALRQVEMFHAV  255 (321)
Q Consensus       187 ~~a~~~~~DvvliDTAGR~~~~~~lm~EL~ki~~v~~~~~~~~p~~~~lVlda~~gq~~~~~a~~F~~~  255 (321)
T Consensus        56 e~i~~~~~~~~~wDvgG~~~~-R~lW----------~~Y~~-~~~~iIfVVDssD~~r~~eak~~L~~l  112 (190)
T cd00879          56 EELTIGNIKFKTFDLGGHEQA-RRLW----------KDYFP-EVDGIVFLVDAADPERFQESKEELDSL  112 (190)
T ss_pred             EEEEECCEEEEEEECCCCCCC-CCCH----------HHHHH-CCCEEEEEEECCCHHHHHHHHHHHHHH
T ss_conf             999989999999989998455-5438----------88843-113799999776778999999999999