Xin Zeng, Tiantian Wei, Xianghe Wang, Yuan Liu, Zhenshu Tan, Yihai Zhang, Tianyu Feng, Yao Cheng, Fengzhang Wang, Bin Ma, Wei Qin, Chuanping Gao, Junyu Xiao, Chu Wang
Metal-binding proteins (MBPs) have various and important biological roles in all living species and many human diseases are intricately linked to dysfunctional MBPs. Here, we report a chemoproteomic method named 'metal extraction-triggered agitation logged by thermal proteome profiling' (METAL-TPP) to globally profile MBPs in proteomes. The method involves the extraction of metals from MBPs using chelators and monitoring the resulting protein stability changes through thermal proteome profiling. Applying METAL-TPP to the human proteome with a broad-spectrum chelator, EDTA, revealed a group of proteins with reduced thermal stability that contained both previously known MBPs and currently unannotated MBP candidates...
February 26, 2024: Nature Chemical Biology