41. This reaction, called tRNA charging, is catalyzed by aminoacyl tRNA synthetase. 42. There is a different tRNA molecule for each codon. 43. No one has examined experimentally the arginine-tRNA synthetase of these organisms. 44. The secondary structure of this RNA element is a cloverleaf that resembles tRNA . 45. This enzyme participates in alanine and aspartate metabolism and aminoacyl-trna biosynthesis. 46. This enzyme participates in arginine and proline metabolism and aminoacyl-trna biosynthesis. 47. Thus, the two products are diphosphate and tRNA containing 6-isopentenyladenosine. 48. Aspartyl-tRNA synthetase charges its cognate tRNA with aspartate during protein biosynthesis. 49. Aspartyl-tRNA synthetase charges its cognate tRNA with aspartate during protein biosynthesis. 50. This gene encodes the mitochondrial tryptophanyl-tRNA synthetase.
