>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=90.16  E-value=0.16  Score=28.86  Aligned_cols=22  Identities=27%  Similarity=0.735  Sum_probs=19.5

Q ss_pred             CEECCCCCCCCHHHHHHHHHHH
Q ss_conf             1003675666624899999998
Q gi|254780615|r  151 KIGLFGGAGVGKTVLIMELINN  172 (478)
Q Consensus       151 r~gIfgg~GvGKT~l~~~~i~n  172 (478)
T Consensus         1 Ki~ivG~~~vGKTsli~r~~~~   22 (160)
T cd00876           1 KVVVLGAGGVGKSAITIQFVKG   22 (160)
T ss_pred             CEEEECCCCCCHHHHHHHHHHC
T ss_conf             9999996996799999999619