>cd00878 Arf_Arl Arf (ADP-ribosylation factor)/Arl (Arf-like) small GTPases. Arf proteins are activators of phospholipase D isoforms. Unlike Ras proteins they lack cysteine residues at their C-termini and therefore are unlikely to be prenylated. Arfs are N-terminally myristoylated. Members of the Arf family are regulators of vesicle formation in intracellular traffic that interact reversibly with membranes of the secretory and endocytic compartments in a GTP-dependent manner. They depart from other small GTP-binding proteins by a unique structural device, interswitch toggle, that implements front-back communication from N-terminus to the nucleotide binding site. Arf-like (Arl) proteins are close relatives of the Arf, but only Arl1 has been shown to function in membrane traffic like the Arf proteins. Arl2 has an unrelated function in the folding of native tubulin, and Arl4 may function in the nucleus. Most other Arf family proteins are so far relatively poorly characterized. Thu

Probab=99.59 E-value=5.6e-15 Score=123.70 Aligned_cols=128 Identities=22% Similarity=0.300 Sum_probs=92.8 Q ss_pred CEEEECCCCCCHHHHHHHHHCCHHCCCCCCCCCCEEECCCCCCCCCEEEEEEECCHHCCCCHHHHHHHHHHHHHHHHHHC Q ss_conf 02431146631888999985520002345468721100012456835899950810002410356666788899850301 Q gi|254780809|r 221 KIVILGHSNAGKSSLFNALAKKDVAIVTDIPGTTRDVLTIDLDLEGYLVKISDTAGIRETDDIVEKEGIKRTFLEVENAD 300 (440) Q Consensus 221 ~v~i~G~pN~GKSSL~N~L~~~~~aIVs~~~GTTRD~i~~~~~i~g~~~~l~DTaGir~t~d~IE~~GI~ra~~~i~~aD 300 (440) T Consensus 1 Ki~ilG~~~vGKTsll~~l~~~~~~~--~~p--Tig~~~~~i~~~~~~l~iwDt~G~~~~~--------~~~~~y~~~a~ 68 (158) T cd00878 1 RILILGLDGAGKTTILYKLKLGEVVT--TIP--TIGFNVETVEYKNVSFTVWDVGGQDKIR--------PLWKHYYENTN 68 (158) T ss_pred CEEEECCCCCCHHHHHHHHHCCCCCC--CCC--EECCCEEEEEECCEEEEEEECCCCCCCC--------HHHHHHHCCCC T ss_conf 99999999998899999995399887--445--6074089998488999999889972214--------48998727687 Q ss_pred CEEECCCCCCHHHHH-------------HHCCCCCCCCCCCCCCCCCCCHH----------------HHHHHHHHHHHHH Q ss_conf 102013589856634-------------31289853222233344654200----------------0001333323235 Q gi|254780809|r 301 LILLLKEINSKKEIS-------------FPKNIDFIFIGTKSDLYSTYTEE----------------YDHLISSFTGEGL 351 (440) Q Consensus 301 lil~v~D~~~~~~~~-------------~~~~~~~i~V~NK~Dl~~~~~~~----------------~~~~ISaktg~Gi 351 (440) T Consensus 69 ~~i~V~D~t~~~s~~~~~~~~~~~~~~~~~~~~piliv~NK~Dl~~~~~~~ei~~~l~~~~~~~~~~~~~~~SAktg~gI 148 (158) T cd00878 69 GIIFVVDSSDRERIEEAKEELHKLLNEEELKGVPLLIFANKQDLPGALSVSELIEKLGLEKILGRRWHIQPCSAVTGDGL 148 (158) T ss_pred EEEEEEECCCHHHHHHHHHHHHHHHHHCCCCCCEEEEEEECCCCCCCCCHHHHHHHHHHHHHCCCCCEEEEEECCCCCCH T ss_conf 76899837988899999999999986605576538987605476657899999999858751079989999988879298 Q ss_pred HHHHHHHHH Q ss_conf 899999999 Q gi|254780809|r 352 EELINKIKS 360 (440) Q Consensus 352 ~~L~~~I~~ 360 (440) T Consensus 149 ~e~f~~L~e 157 (158) T cd00878 149 DEGLDWLLQ 157 (158) T ss_pred HHHHHHHHC T ss_conf 999999956

HHsearch alignment for GI: 254780809 and conserved domain: cd00878