1. An aminoacyl-tRNA synthetase is an enzyme that catalyzes the attachment of a specific amino acid to its corresponding tRNA molecule.
氨酰-tRNA合成酶是一种酶，它催化特定氨基酸与其对应的tRNA分子的连接。
2. The formation of proteins in cells is controlled by various synthetases.
细胞中的蛋白质的形成受到各种合成酶的控制。