The present invention provides a method for engineering a T- cell receptor domain polypeptide comprising at least one modification in a structural loop region of said T-cell receptor domain polypeptide and determining the binding of said T-cell receptor domain polypeptide to an epitope of an antigen, wherein the unmodified T-cell receptor domain polypeptide does not significantly bind to said epitope, comprising the steps of providing a nucleic acid encoding a T- cell receptor domain polypeptide comprising at least one structural loop region, modifying at least one nucleotide residue of at least one of said structural loop regions, transferring said modified nucleic acid in an expression system, expressing said modified T-cell receptor domain polypeptide, contacting the expressed modified T-cell receptor domain polypeptide with said epitope and determining whether said modified T-cell receptor domain polypeptide binds to said epitope. The present invention also covers modified T cell receptor domain polypeptides obtained by said method and their use and libraries containing said modified T cell receptor domain polypeptides.
本发明提供了一种工程化T细胞受体结构域
多肽的方法,该方法包括在所述T细胞受体结构域
多肽的结构环区中进行至少一种修饰,并确定所述T细胞受体结构域
多肽与抗原表位的结合,其中未修饰的T细胞受体结构域
多肽与所述表位无明显结合、包括以下步骤:提供编码包含至少一个结构环区的 T 细胞受体结构域
多肽的核酸,修饰至少一个所述结构环区的至少一个核苷酸残基,在表达系统中转移所述修饰的核酸,表达所述修饰的 T 细胞受体结构域
多肽,将表达的修饰的 T 细胞受体结构域
多肽与所述表位接触,并确定所述修饰的 T 细胞受体结构域
多肽是否与所述表位结合。本发明还包括通过所述方法获得的修饰 T 细胞受体结构域
多肽及其用途,以及含有所述修饰 T 细胞受体结构域
多肽的文库。