The present invention refers to novel hetero-multimeric proteins obtained from modified ubiquitin capable of binding the extradomain B of fibronectin (ED-B) with high affinity. Furthermore, the invention refers to fusion proteins comprising said recombinant protein fused to a pharmaceutically and/or diagnostically active component. The invention is further directed to the use of said proteins in medical treatment methods.本発明は、フィブロネクチンのエキストラドメインB(ED-B)に結合可能な修飾ユビキチンから得られる新規な組換えタンパク質に関する。さらに、本発明は、薬学的活性成分および/または診断用活性成分と融合した前記組換えタンパク質を含む、融合タンパク質に関する。【選択図】なし