>cd00876 Ras Ras family. The Ras family of the Ras superfamily includes classical N-Ras, H-Ras, and K-Ras, as well as R-Ras, Rap, Ral, Rheb, Rhes, ARHI, RERG, Rin/Rit, RSR1, RRP22, Ras2, Ras-dva, and RGK proteins. Ras proteins regulate cell growth, proliferation and differentiation. Ras is activated by guanine nucleotide exchange factors (GEFs) that release GDP and allow GTP binding. Many RasGEFs have been identified. These are sequestered in the cytosol until activation by growth factors triggers recruitment to the plasma membrane or Golgi, where the GEF colocalizes with Ras. Active GTP-bound Ras interacts with several effector proteins: among the best characterized are the Raf kinases, phosphatidylinositol 3-kinase (PI3K), RalGEFs and NORE/MST1. Most Ras proteins contain a lipid modification site at the C-terminus, with a typical sequence motif CaaX, where a = an aliphatic amino acid and X = any amino acid. Lipid binding is essential for membrane attachment, a key feature of m

Probab=99.62 E-value=5.7e-15 Score=105.18 Aligned_cols=155 Identities=17% Similarity=0.207 Sum_probs=85.3 Q ss_pred EEEEECCCCCCHHHHHHHHHCCCCEEEECCCCCEEEECCEEEEEEEEEEEECCCEEEEEECCHHHHHHHHHHHHHHHHHH Q ss_conf 89997489988989999973897379873888414521202665556785089649999760010111224478988889 Q gi|254780484|r 31 EIAFSGRSNVGKSSLINILVNRKNLARTSNAPGRTQHLNFFVPKDFSNLKNNLPAMALVDMPGYGYARAPKKNVDSWGGL 110 (212) Q Consensus 31 ~VaivG~~NvGKSSLiNaL~g~~~~a~~~~~p~tt~~~~~~~~~~~~~~~~~~~~~~~~DtpG~~~~~~~~~~~~~~~~~ 110 (212) T Consensus 1 Ki~ivG~~~vGKTsli~r~~~~~f~--~~~~pT-i~~----~~~~~~~~~~~~~~l~i~Dt~g~~~~~~~~~~------- 66 (160) T cd00876 1 KVVVLGAGGVGKSAITIQFVKGTFV--EEYDPT-IED----SYRKTIVVDGETYTLDILDTAGQEEFSAMRDL------- 66 (160) T ss_pred CEEEECCCCCCHHHHHHHHHHCCCC--CCCCCC-EEE----EEEEEEEECCEEEEEEEEECCCCHHHHHHHHH------- T ss_conf 9999996996799999999619599--877883-004----89999997669999999979996235578899------- Q ss_pred HHHHHHHHHHHCCCCCCCCCCCCC--CHH---HHHHHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCC Q ss_conf 987777664200000112235788--754---545543210257532212222111102468999999999975313689 Q gi|254780484|r 111 IVRYLSERSTLRCVYLLIDCRHGV--KQI---DQDVFSFLDKKAVSYQIVLTKIDKLSPTTAQETLEKTKYLIRNYPTAH 185 (212) Q Consensus 111 ~~~~~~~~~~~~~~~~~~~~~~~~--~~~---~~~~~~~~~~~~~~~~~v~nK~D~~~~~~~~~~~~~~~~~~~~~~~~~ 185 (212) T Consensus 67 ---~~---~~a~~~ilvfd~~~~~Sf~~i~~~~~~i~~~~~~~~~piilvgnK~Dl~~~~~V~--~~e~~~~a~~~---~ 135 (160) T cd00876 67 ---YI---RQGDGFILVYSITDRESFEEIKGYREQILRVKDDEDIPIVLVGNKCDLENERQVS--KEEGKALAKEW---G 135 (160) T ss_pred ---HH---HHCCEEEEEECCCCHHHHHHHHHHHHHHHHHHCCCCCEEEEEEECCCCHHCCCCC--HHHHHHHHHHC---C T ss_conf ---97---6436899973289878999999999999997287886299999745622307899--99999999984---9 Q ss_pred CCEEEEECCCCCCHHHHHHHHHHHH Q ss_conf 8689998888899899999999872 Q gi|254780484|r 186 PEVIPTSSVKRKGIEVLRKAILETI 210 (212) Q Consensus 186 ~~i~~vSA~~g~Gi~eL~~~I~~~l 210 (212) T Consensus 136 ~~y~e~Sak~g~nV~e~F~~i~~~i 160 (160) T cd00876 136 CPFIETSAKDNINIDEVFKLLVREI 160 (160) T ss_pred CEEEEECCCCCCCHHHHHHHHHHHC T ss_conf 9799984798949899999999729

HHsearch alignment for GI: 254780484 and conserved domain: cd00876