The present invention relates to a labeled glutaminase (GLS) protein comprising a GLS protein and a fluorescent reporter group attached to the GLS protein, wherein the fluorescent reporter group is attached to the GLS protein within the glutaminase domain pfam04960 of GLS. The present invention also relates to isolated glutaminase protein mutants. Also disclosed is a method of screening for compounds that allosterically bind to a glutaminase protein. The present invention also relates to a method of identifying compounds that inhibit or stabilize tetramer formation of glutaminase protein. The present invention further relates to a screening kit for compounds that inhibit or stabilize tetramer formation.
本发明涉及一种标记的谷
氨酰胺酶(GLS)蛋白,包括GLS蛋白和连接到GLS蛋白上的荧光报告基团,其中荧光报告基团在GLS的谷
氨酰胺酶结构域pfam04960内连接到GLS蛋白上。本发明还涉及分离的谷
氨酰胺酶蛋白突变体。本发明还公开了一种筛选与谷
氨酰胺酶蛋白异构结合的化合物的方法。本发明还涉及一种鉴定抑制或稳定谷
氨酰胺酶蛋白四聚体形成的化合物的方法。本发明还涉及一种筛选抑制或稳定四聚体形成的化合物的试剂盒。