HHsearch alignment for GI: 254780321 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=99.37  E-value=2e-11  Score=96.11  Aligned_cols=152  Identities=16%  Similarity=0.243  Sum_probs=104.4

Q ss_pred             HHCEEEEEECCCCCCHHHHHHHHHHHCCCCCCCCCCCEEECCCHHHHHHCCEEEEEEEEEEEECCCCCEEEEEEEECCCC
Q ss_conf             25317999801389877889999998298054444311305867798719505232799997437884389999617873
Q gi|254780321|r    9 SRIRNFSIVAHIDHGKSTLADRFIQHCRGLTEREMSSQVLDNMDIERERGITIKAQTVRLNYTSTDAKDYQLNLIDTPGH   88 (606)
Q Consensus         9 ~~IRN~~IiaHvDhGKTTL~d~lL~~tg~i~~~~~~~~vlD~~~~EreRGITIka~~~~~~~~~~~~~~y~iNlIDTPGH   88 (606)
T Consensus        17 ~k~~kIlilGld~aGKTTil~~l~--~~~~~~---------~~-------PT~Gfn~e~i~~-----~~~~~~~wDvgG~   73 (190)
T cd00879          17 NKEAKILFLGLDNAGKTTLLHMLK--DDRLAQ---------HV-------PTLHPTSEELTI-----GNIKFKTFDLGGH   73 (190)
T ss_pred             CCCCEEEEEECCCCCHHHHHHHHH--CCCCCE---------EC-------CCCCCCEEEEEE-----CCEEEEEEECCCC
T ss_conf             770489999069998899999980--799531---------52-------655874599998-----9999999989998


Q ss_pred             CHHHHHHHHHHHHCCEEEEEEECCCCC-CHHHHHHHHHHHH----CCCCEEEEECCCCCCCCCCCCHHHHHHHHHHHH--
Q ss_conf             002799999997302689999868788-6558999999997----099679983267887532113388877555322--
Q gi|254780321|r   89 VDFTYEVSRSLSACEGSLLVVDATQGV-EAQTLANVYQAID----NNHEIITVLNKADLPSADPDRVKKQIEETIGIS--  161 (606)
Q Consensus        89 ~DF~~EV~r~l~a~dgaiLvVdA~~Gv-q~QT~~~~~~A~~----~~l~~I~viNKiD~~~A~~e~v~~ei~~~~g~~--  161 (606)
T Consensus        74 ~~~R~lW~~Y~~~~~~iIfVVDssD~~r~~eak~~L~~lL~~~~l~~~PlLIlaNK~Dl~~a~~---~~ei~~~L~L~~~  150 (190)
T cd00879          74 EQARRLWKDYFPEVDGIVFLVDAADPERFQESKEELDSLLSDEELANVPFLILGNKIDLPGAVS---EEELRQALGLYGT  150 (190)
T ss_pred             CCCCCCHHHHHHCCCEEEEEEECCCHHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCCCCCC---HHHHHHHCCCCCC
T ss_conf             4555438888431137999997767789999999999998555006980899986667767989---9999988398420


Q ss_pred             --------------HHHHHHHHHHCCCCCCHHHHHHHHH
Q ss_conf             --------------3210001110022320067877632
Q gi|254780321|r  162 --------------TEDALLVSAKTGEGIPLLLERIVQQ  186 (606)
Q Consensus       162 --------------~~~ii~vSAktG~GV~~LLd~Iv~~  186 (606)
T Consensus       151 ~~~~~~~~~~~~~r~~~i~~csA~tG~Gl~egl~WLs~~  189 (190)
T cd00879         151 TTGKGVSLKVSGIRPIEVFMCSVVKRQGYGEAFRWLSQY  189 (190)
T ss_pred             CCCCCCCCCCCCCCCEEEEEEEEECCCCHHHHHHHHHHH
T ss_conf             155443345457761499965506796828999999854