Efficient, Traceless Semi-Synthesis of α-Synuclein Labeled with a Fluorophore/Thioamide FRET Pair
作者:E. Petersson、Rebecca Wissner、Anne Wagner、John Warner
DOI:10.1055/s-0033-1339853
日期:——
incorporated into proteins through semi-synthesis and used as probes to monitor structural changes. To date, our methods have required the presence of a cysteine at the peptide ligation site, which may not be present in the native peptide sequence. Here, we present a strategy for the semi-synthesis of thioproteins using homocysteine as a ligation point with subsequent masking as methionine, making the ligation
我们已经证明硫代酰胺可以通过半合成掺入蛋白质中,并用作探针来监测结构变化。迄今为止,我们的方法需要在肽连接位点存在半胱氨酸,这可能不存在于天然肽序列中。在这里,我们提出了一种半合成硫蛋白的策略,使用同型半胱氨酸作为连接点,随后掩蔽为甲硫氨酸,使连接“无痕”。