HHsearch alignment for GI: 254780648 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=99.80  E-value=1.4e-19  Score=138.51  Aligned_cols=154  Identities=20%  Similarity=0.199  Sum_probs=107.2

Q ss_pred             ECEEEEECCCCCCCEEEEEECCCCCHHHHHHHCCCEECCEEEEECCEEEEEECCCCCCCCCCCCCCCHHHHHHHHHHHHH
Q ss_conf             01124421677753035410145401212110000001026632986899822642124731167751234433333578
Q gi|254780648|r  160 ADIGIIGLPNAGKSTFLASVTRAKPKIADYPFTTLYPNLGIVKEGYKEFILADIPGIIKNAHQGAGIGDRFLKHTERTHV  239 (335)
Q Consensus       160 aDVglVG~PNaGKSTLln~ls~ak~kIa~ypFTT~~P~lGvv~~~~~~~~i~D~PGlIegA~~~~glG~~FLrhIer~~v  239 (335)
T Consensus        20 ~kIlilGld~aGKTTil~~l~~~~~~-~~~--PT~Gfn~e~i~~~~~~~~~wDvgG~----~~~R~lW~---~Y~~~~~~   89 (190)
T cd00879          20 AKILFLGLDNAGKTTLLHMLKDDRLA-QHV--PTLHPTSEELTIGNIKFKTFDLGGH----EQARRLWK---DYFPEVDG   89 (190)
T ss_pred             CEEEEEECCCCCHHHHHHHHHCCCCC-EEC--CCCCCCEEEEEECCEEEEEEECCCC----CCCCCCHH---HHHHCCCE
T ss_conf             48999906999889999998079953-152--6558745999989999999989998----45554388---88431137


Q ss_pred             HHHHCCCCCCCHHHHHHHHHHHHHHH--HHHHCCCCEEEEEECCCCCCHHHHHHHHHHHH---------------HHCCC
Q ss_conf             87520222211013466678998777--66750598899997465899889999999999---------------86299
Q gi|254780648|r  240 LLHIVSALEENVQAAYQCILDELSAY--NSELRKKIEIVGLSQIDTVDSDTLARKKNELA---------------TQCGQ  302 (335)
Q Consensus       240 Ll~VVD~s~~d~~~~~~~I~~EL~~y--~~~L~~Kp~IIVlNKiDl~~~e~~~~~~~~l~---------------~~~~~  302 (335)
T Consensus        90 iIfVVDssD~~r~~---eak~~L~~lL~~~~l~~~PlLIlaNK~Dl~~a~~~~ei~~~L~L~~~~~~~~~~~~~~~~r~~  166 (190)
T cd00879          90 IVFLVDAADPERFQ---ESKEELDSLLSDEELANVPFLILGNKIDLPGAVSEEELRQALGLYGTTTGKGVSLKVSGIRPI  166 (190)
T ss_pred             EEEEEECCCHHHHH---HHHHHHHHHHHHHHHCCCCEEEEEECCCCCCCCCHHHHHHHCCCCCCCCCCCCCCCCCCCCCE
T ss_conf             99999776778999---999999999855500698089998666776798999999883984201554433454577614


Q ss_pred             CEEEEECCCCCCHHHHHHHHHHHH
Q ss_conf             489998887889999999999999
Q gi|254780648|r  303 VPFEFSSITGHGIPQILECLHDKI  326 (335)
Q Consensus       303 ~vi~ISA~tg~GI~eL~~~I~e~L  326 (335)
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