PDB # Name 2shp-A shp-2 (syp, shptp-2) Mutant 1d4t-A t cell signal transduction molecule sap fragment 1a81-A syk kinase fragment t-cell surface glycoprotein 1qad-A pi3-kinase p85 alpha subunit fragment 2cbl-A proto-oncogene cbl fragment zap-70 fragment