The interaction between ADAM22 and 14-3-3β

ADAM family consists of a number of transmembrane proteins that contain a disintegrin and metalloprotease domain. ADAMs are involved in a highly diverse set of biological processes, including fertilization, neurogenesis, myogenesis and inflammatory response. The ADAM proteins have both cell adhesion and protease activities.Adam22 is highly expressed in human brain. Theadam22-/- mice presented severe ataxia and died before weaning, but the function of ADAM22 is still unknown. 14-3-3 β interacting with ADAM22 was detected by using yeast two-hybrid assay. The specificity of interaction between ADAM22 and 14-3-3β was proved byin vitro binding assay and immunoprecipitation. The major 14-3-3β binding site was located in the last 28 amino acid residues of ADAM22 cytoplasmic tail. Protein 14-3-3β is abundant and plays an important role in mediating cell diffusion, migration and cell cycle control. The interaction of ADAM22 and 14-3-3β suggests that the ADAM22 may play a crucial role in neural function and development.     

The interaction between ADAM22 and 14-3-3β

ADAM family consists of a number of transmembrane proteins that contain a disintegrin and metalloprotease domain. ADAMs are involved in a highly diverse set of biological processes, including fertilization, neurogenesis, myogenesis and inflammatory response. The ADAM proteins have both cell adhesion and protease activities. Adam22 is highly expressed in human brain. The adam22-/- mice presented severe ataxia and died before weaning, but the function of ADAM22 is still unknown. 14-3-3 β interacting with ADAM22 was detected by using yeast two-hybrid assay. The specificity of interaction between ADAM22 and 14-3-3β was proved by in vitro binding assay and immunoprecipitation. The major 14-3-3β binding site was located in the last 28 amino acid residues of ADAM22 cytoplasmic tail. Protein 14-3-3β is abundant and plays an important role in mediating cell diffusion, migration and cell cycle control. The interaction of ADAM22 and 14-3-3β suggests that the ADAM22 may play a crucial role in neural function a     

ADAM22蛋白与14-3-3β蛋白之间的相互作用

ADAM家族是一类具有去整合域和金属蛋白酶域的跨膜蛋白, 广泛参与各种重要的生理过程, 如精卵结合、神经系统发育、成肌细胞融合以及炎症反应等. 该家族蛋白具备潜在的粘连和蛋白酶活性. adam22在脑部高度表达, 基因剔除小鼠则出现严重的共济失调, 并在断奶前死亡, 但其作用机制不详. 用酵母双杂合系统筛选到与ADAM22相互作用的蛋白质14-3-3b, 离体结合实验、免疫共沉淀进一步证实了ADAM22与14-3-3β蛋白相互作用的专一性. ADAM22胞内部分系列缺失实验表明, C端第864~892氨基酸残基是14-3-3β的结合基序. 14-3-3β在脑部大量表达, 具有介导细胞的扩散、迁移及调节细胞周期等重要功能. 因此, 本实验证实这两种蛋白质之间存在相互作用,为阐明ADAM22在神经系统发育中的功能奠定了基础.