measurements of the optimum temperatures for various flounder amino-acyl-trna synthetases suggest that alanyl-trna synthetase functions best between 0 and 5 degrees c , which is the sea water temperature when antifreeze protein synthesis occurs , while prolyl- and valyl-trna synthetases are most active between 20 and 30 degrees c .
C0002529
amino-acyl-trna synthetases
C0042301
valyl-trna synthetases