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