PT - JOURNAL ARTICLE AU - Ximena Steinberg AU - Jason Galpin AU - Gibran Nasir AU - Jose Sepulveda-Ugarte AU - Romina V. SepĂșlveda AU - Fernando Gonzalez-Nilo AU - Leon D. Islas AU - Christopher A. Ahern AU - Sebastian Brauchi TI - A Rationally Designed Aminoacyl-tRNA Synthetase for Genetically Encoded Fluorescent Amino Acids AID - 10.1101/065227 DP - 2016 Jan 01 TA - bioRxiv PG - 065227 4099 - http://biorxiv.org/content/early/2016/07/22/065227.short 4100 - http://biorxiv.org/content/early/2016/07/22/065227.full AB - The incorporation of non-canonical amino acids into proteins has emerged as a promising strategy to manipulate and study protein structure-function relationships with superior precision in vitro and in vivo. To date, fluorescent non-canonical amino acids (f-ncAA) have been successfully incorporated in proteins expressed in bacterial systems, Xenopus oocytes, and HEK-293T cells. Here, we describe the rational generation of an orthogonal aminoacyltRNA synthetase based on the E. coli tyrosine synthetase that is capable of encoding the f-ncAA tyr-coumarin in HEK-293T cells.