#$%^&*AU2014203645A120140724.pdf#####INHIBITORS OF RECEPTOR TYROSINE KINASES AND METHODS OF USE THEREOF 5 ABSTRACT The present invention provides moieties that bind to an Ig-like domain, e.g., D4 or D5, of a human receptor tyrosine kinase, e.g., the human Kit RTK or the PDGFR RTK, or the D7 domain of a type V receptor tyrosine kinase wherein the moieties lock 10 the ectodomain of the receptor tyrosine kinase in an inactive state thereby antagonizing the activity of the receptor tyrosine kinase. 191