Question

Sketch and label Clover model of T- RNA.

Answer 1

Hint: The molecular structure of tRNA described by the cloverleaf model of tRNA. The business end and three arms are the two ends of the chain of tRNA models. There are three kinds of loops present in the tRNA model such as D loop, T$\Phi $c loop that are present on the site of ribosome and the third type of arm is known as variable arm.

Complete answer:

RNA name obtained from the SRNA and family of 60 small sized 74-95 ribonucleic acids, and 10-15% total cellular present in the tRNA structure. The value of the sedimentation constant 3.8 S and 25,000- 30,000 molecular weight of the structure. There are a number of unusual bases present A,U,G,C and help to protect the tRNA molecules from the dehydration by RNase that are present in the cytoplasm.
The primary structure of tRNA is linear sequence of nucleotides and secondary is clover leaf model and the third one is 3D structure of tRNA which looks like Helix stacking and L shape. The tRNA operons of E coli contain the sequence of tRNA and seven tRNA genes that separated by spacer sequence. As pre tRNA in the nucleus, tRNA transcribed by the RNA polymerase 3. And the accuracy of protein during the translation depends upon the correct amino acids being esterified to their cognate tRNA molecules. tRNA helps to recognize the aminoacyl tRNA synthetase enzyme, and transfer the amino acid to the polypeptide chain.

Note: DNA arms are always present in the bottom end and have three base sequences that pair with the complementary base sequence in an mRNA. And the terminal 3’ hydroxyl group which is formed by ester linkage with the help of amino acid and anticodon are the two important parts of the tRNA cloverleaf structure.