In: Biology
Describe how transfer RNAs (tRNAs) fulfill their role in protein synthesis. Give an example.
After the completion of transcription, a mature mRNA is formed. The mRNA then takes part in the process of translation which is also called as protein synthesis. In this translation process, apart from the mRNA two other things play important parts, which are transfer RNA and ribosome.
Codons are code words present on the mRNA. Each codon is composed of 3 nucleotides, hence they are triplet in nature. For example, AUG is a codon which codes for the amino acid methionine.
Similar to the mRNA, the tRNA also carries triplet nucleotide sequences which are complementary to that of the codons present on the mRNA. The tRNA triplet sequences are known as anticodons. The anticodons bind with the complementary codons with the help of ribosomes. The tRNA bring particular amino acids with them and after pairing with the mRNA they trnasfer the amnio acids to the growing chain of peptides.