TY - RPRT TI - Class I and II aminoacyl-tRNA synthetase tRNA groove discrimination created the first synthetase·tRNA cognate pairs and was therefore essential to the origin of genetic coding AU - Carter, C. W. AU - Wills, P. R. PY - 2019 DO - 10.1101/593269 UR - https://www.biorxiv.org/content/10.1101/593269v1 ID - 10.1101/593269 ER -