Structural determinants for peptide-bond formation by asparaginyl ligases [Biochemistry]

Asparaginyl endopeptidases (AEPs) are cysteine proteases which break Asx (Asn/Asp)–Xaa bonds in acidic conditions. Despite sharing a conserved overall structure with AEPs, certain plant enzymes such as butelase 1 act as a peptide asparaginyl ligase (PAL) and catalyze Asx–Xaa bond formation in near-neutral conditions. PALs also serve as macrocyclases in...

Source: Proceedings of the National Academy of Sciences - June 10, 2019 Category: Science Authors: Xinya Hemu, Abbas El Sahili, Side Hu, Kaho Wong, Yu Chen, Yee Hwa Wong, Xiaohong Zhang, Aida Serra, Boon Chong Goh, Dina A. Darwis, Ming Wei Chen, Siu Kwan Sze, Chuan-Fa Liu, Julien Lescar, James P. Tam Tags: PNAS Plus Source Type: research