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Benign C-C bond formation at various sites in cell-surface channels has been achieved through Suzuki-Miyaura coupling of genetically positioned unnatural amino acids containing aryl halide side chains. This enabled site-selective cell surface manipulation of Escherichia coli ; the phosphine-free catalyst caused no cell death at required Pd loadings, suggesting future in vivo application of catalytic metal-mediated bond formation in more complex organisms.
Spicer et al. (Fri,) studied this question.