>2y3a_B mol:protein length:302 PHOSPHATIDYLINOSITOL 3-KINASE REGULATORY SUBUNIT BETA MSQQDQVVKEDSVEAVGAQLKVYHQQYQDKSREYDQLYEEYTRTSQELQMKRTAIEAFN ETIKIFEEQGQTQEKCSKEYLERFRREGNEKEMQRILLNSERLKSRIAEIHESRTKLEQ DLRAQASDNREIDKRMNSLKPDLMQLRKIRDQYLVWLTQKGARQRKINEWLGIKNETED QYSLMEDEDALPHHEERTWYVGKINRTQAEEMLSGKRDGTFLIRESSQRGCYACSVVVD GDTKHCVIYRTATGFGFAEPYNLYGSLKELVLHYQHASLVQHNDALTVTLAHPVRAPGP GPPSAAR