>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=99.64 E-value=5.6e-15 Score=119.85 Aligned_cols=147 Identities=20% Similarity=0.340 Sum_probs=99.5 Q ss_pred EEEEECCCCCCHHHHHHHHHCCCEEEECCCCCCEEEEEEEEEEECCE--EEEEEECCCCCCCCHHHHHHHHHHHHHHHHH Q ss_conf 89997189887888999985885010258985302238999998998--9999965884207636899999999999998 Q gi|255764471|r 4 TIAIVGAPNVGKSTLFNRLVKKKMAVVGNHPGITRDRLYGQAIINGV--IFNIVDTAGIADGKNCSIAKQMNDQTELAIN 81 (470) Q Consensus 4 ~iaivG~pNvGKStL~N~l~~~~~aiv~~~~g~Trd~~~~~~~~~~~--~~~liDT~G~~~~~~~~~~~~i~~~~~~ai~ 81 (470) T Consensus 1 Ki~ivG~~~vGKTsli~r~~~~~f--~~~~~pTi~~~~~~~~~~~~~~~~l~i~Dt~g~~~-----~-~~~---~~~~~~ 69 (160) T cd00876 1 KVVVLGAGGVGKSAITIQFVKGTF--VEEYDPTIEDSYRKTIVVDGETYTLDILDTAGQEE-----F-SAM---RDLYIR 69 (160) T ss_pred CEEEECCCCCCHHHHHHHHHHCCC--CCCCCCCEEEEEEEEEEECCEEEEEEEEECCCCHH-----H-HHH---HHHHHH T ss_conf 999999699679999999961959--98778830048999999766999999997999623-----5-578---899976 Q ss_pred HCCEEEEEECCCCCCCHHH-HHHHHHHH----CCCCCCCCCHHHHCCCHHHH----HHHHHH-HHCCCCCEEEHHHCCCC Q ss_conf 7798999975988776234-45553321----02332222056522301210----012455-31222201001110222 Q gi|255764471|r 82 EAHLILFLIDSKAGITPYD-HAITSFLR----KKNIPIIIVSNKMDTRIAQR----NFYEIY-SLDFKEIVEISAEHDLG 151 (470) Q Consensus 82 ~aD~il~vvD~~~g~~~~D-~~i~~~lr----~~~~~~ilv~NK~D~~~~~~----~~~e~~-~lg~~~~i~iSA~~g~G 151 (470) T Consensus 70 ~a~~~ilvfd~~~~~Sf~~i~~~~~~i~~~~~~~~~piilvgnK~Dl~~~~~V~~~e~~~~a~~~~~-~y~e~Sak~g~n 148 (160) T cd00876 70 QGDGFILVYSITDRESFEEIKGYREQILRVKDDEDIPIVLVGNKCDLENERQVSKEEGKALAKEWGC-PFIETSAKDNIN 148 (160) T ss_pred HCCEEEEEECCCCHHHHHHHHHHHHHHHHHHCCCCCEEEEEEECCCCHHCCCCCHHHHHHHHHHCCC-EEEEECCCCCCC T ss_conf 4368999732898789999999999999972878862999997456223078999999999998499-799984798949 Q ss_pred CHHHHHHHHHH Q ss_conf 01479999998 Q gi|255764471|r 152 TSELHSVIFKI 162 (470) Q Consensus 152 i~~L~~~i~~~ 162 (470) T Consensus 149 V~e~F~~i~~~ 159 (160) T cd00876 149 IDEVFKLLVRE 159 (160) T ss_pred HHHHHHHHHHH T ss_conf 89999999972

HHsearch alignment for GI: 255764471 and conserved domain: cd00876