核苷酸结合技术 Aminoacyl- UUU tRNAs Ribosomes 0 Trinucleotide UUU Arg UUU Leu Arg 。 Trinucleotide and all tRNAs Ribosomes stick to filter Complex of ribosome,UUU,and pass through filter Phe-tRNA sticks to filter核苷酸结合技术