tRNA is very important as specific amino acid is picked up by it. the rRNA has opposite but matching sets of codons and these bind to the tRNA and thus the amino acid is lined up with the previous amino acids and this helps in carrying it using the tRNA. When these two amino acids are lined up then the exymes are then joined to them and this goes on till a protein is built. Thus we see that tRNA works like a robot which allows the next part to be got and then aligns the part on the production line where it gets welded together. However, what is necessary to note that there are different tRNA for different kinds of amino acids which are in protein.
Use of tRNA
Thus we see that tRNA or transfer RNA works like a protein decoder and when the 3 nucleotide sequence is built based on the combination of the 4 nucleotides which are available.
The mRNA is used to copy the information from the DNA and this is known as transcription. This mRNA then starts to travel out of the nucleus and it combines with the tRNA as well as chromosome and the information is read which is on the mRNA and the amino acids are hooked so as to form protein chains.
Infact, the tRNA helps in deciphering the code words which are there in the mRNA. The amino acids each have their own type of tRNA. This is bound and carried to the polypeptide growing chain. If the next code word on the mRNA requires it. The tRNA has an amino acid attached and this is selected at every step due to specific tRNA molecules. There is a 3 base sequence which is used for the base pair with the complementary pair.