Abstract
The three-dimensional crystal structure of seryl-transfer RNA synthetase from Escherichia coli, refined at 2.5 Å resolution, is described. It has an N-terminal domain that forms an antiparallel α helical coiled-coil, stretching 60 Å out into the solvent and stabilized by interhelical hydrophobic interactions and an active-site α – β domain based around a seven-stranded antiparallel β sheet. Unlike the three other known synthetase structures, the enzyme contains no classical nucleotide-binding fold, and is the first representative of a second class of aminoacyl-tRNA synthetase structures.
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Cusack, S., Berthet-Colominas, C., Härtlein, M. et al. A second class of synthetase structure revealed by X-ray analysis of Escherichia coli seryl-tRNA synthetase at 2.5 Å. Nature 347, 249–255 (1990). https://doi.org/10.1038/347249a0
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DOI: https://doi.org/10.1038/347249a0


