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Aminoacyl-tRNA synthetases

1997; Elsevier BV; Volume: 7; Issue: 6 Linguagem: Inglês

10.1016/s0959-440x(97)80161-3

1879-033X

S. Cusack,

Protein Structure and Dynamics

Crystallographic studies of a number of aminoacyl-tRNA synthetases and their complexes with ATP, amino acid and cognate tRNA are leading to an increasingly detailed picture of how these sophisticated enzymes function. Within the two distinct structural classes of ten synthetases, many common features are apparent, although evolution has led to many interesting idiosyncrasies in certain enzymes. Recent advances, specially concerning class II enzymes, have increased out knowledge of both the role of electrophiles in the mechanism of amino acid activation and cross-subunit tRNA recognition and help solve the evolutionary puzzles that have emerged from the extension of the aminoacyl-tRNA synthetase database to include Archae