>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=99.51 E-value=1.9e-13 Score=107.51 Aligned_cols=151 Identities=21% Similarity=0.217 Sum_probs=100.7 Q ss_pred EEEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCEECCCCHHHHHCCCEEEEEEEEEEECCEEEEEECCCCCCCCHHHHHH Q ss_conf 99985468987788999999839614232200000388577987096064679999989979999728987540799999 Q gi|254780233|r 22 IAIIAHVDHGKTTLVDELLKQSGVFRDNQRVSERVMDCNDLEKERGITILAKVTSIVWNDVRINIVDTPGHADFGGEVER 101 (624) Q Consensus 22 iaIiaHvDhGKTTL~d~LL~~sG~~~~~~~v~~~vmD~~~~EreRGITI~a~~~~~~~~~~~iNiiDTPGH~DF~gEVer 101 (624) T Consensus 2 i~ilG~~~vGKTsll~~l~~--~~~~~---~~--------------pTig~~~~~i~~~~~~l~iwDt~G~~~~~~~~~~ 62 (158) T cd00878 2 ILILGLDGAGKTTILYKLKL--GEVVT---TI--------------PTIGFNVETVEYKNVSFTVWDVGGQDKIRPLWKH 62 (158) T ss_pred EEEECCCCCCHHHHHHHHHC--CCCCC---CC--------------CEECCCEEEEEECCEEEEEEECCCCCCCCHHHHH T ss_conf 99999999988999999953--99887---44--------------5607408999848899999988997221448998 Q ss_pred HHHHHCEEEEEEECCCCC-CHHHHHHHHHHH----HCCCCEEEEEECCCCCCCCHHHHHHHHHHHHHHCCCCHHHCCHHH Q ss_conf 987421789999768788-647899999999----729978999975436674025689999988862267301104266 Q gi|254780233|r 102 ILCMVESVVVLVDAAEGP-MPQTKFVVGKAL----KIGLRPIVVVNKVDRSDARADEVINEVFDLFSALDATDAQLDFPI 176 (624) Q Consensus 102 ~l~~~DgaiLvVdA~eGv-~~QT~~vl~~A~----~~~l~~IvvINKiDr~~a~~~~v~~ei~dlf~~l~a~de~ld~Pv 176 (624) T Consensus 63 y~~~a~~~i~V~D~t~~~s~~~~~~~~~~~~~~~~~~~~piliv~NK~Dl~~~~~~~ei~~~l~~~-~--~~--~~~~~~ 137 (158) T cd00878 63 YYENTNGIIFVVDSSDRERIEEAKEELHKLLNEEELKGVPLLIFANKQDLPGALSVSELIEKLGLE-K--IL--GRRWHI 137 (158) T ss_pred HHCCCCEEEEEEECCCHHHHHHHHHHHHHHHHHCCCCCCEEEEEEECCCCCCCCCHHHHHHHHHHH-H--HC--CCCCEE T ss_conf 727687768998379888999999999999866055765389876054766578999999998587-5--10--799899 Q ss_pred HHHHHHCCEECCCCCCCCCCCCHHHHHHHHC Q ss_conf 8878865916467422334864135553210 Q gi|254780233|r 177 LYGSGRFGWMSDSSDGSRDQGMVPLLNLIVD 207 (624) Q Consensus 177 ~~~Sa~~G~~~~~~~~~~~~gl~~Lld~Ii~ 207 (624) T Consensus 138 ~~~SAktg-----------~gI~e~f~~L~e 157 (158) T cd00878 138 QPCSAVTG-----------DGLDEGLDWLLQ 157 (158) T ss_pred EEEECCCC-----------CCHHHHHHHHHC T ss_conf 99988879-----------298999999956

HHsearch alignment for GI: 254780233 and conserved domain: cd00878