The fivefold discrepancy in size between the S. cerevisiae (84 kb) and mammalian (16.6 kb) mitochondrial genomes indicates the fact that there must be a great difference in their genetic organization in spite of their common function.

TLS Online TPP Program

#Id: 3636

#Unit 3. Fundamental Processes

Rate of protein synthesis slows down when all three bases of a codon engaged in strong Watson-Crick pairing with the three bases of the anticodon.

TLS Online TPP Program

#Id: 3637

#Unit 3. Fundamental Processes

Normally there are 20 AATS exclusively specific for specific amino acid.

TLS Online TPP Program

#Id: 3638

#Unit 3. Fundamental Processes

There are two class of AATS.
1.Class I – that transfer amino acid at 2’ OH and then 3’ OH &
2. Class II – that directly transfer the amino acid to 3’ OH

TLS Online TPP Program

#Id: 3639

#Unit 3. Fundamental Processes

Class I AATS are generally monomer and rarely dimer.

TLS Online TPP Program

#Id: 3640

#Unit 3. Fundamental Processes

Class II AATS are generally dimer and rarely tetramer.

TLS Online TPP Program

#Id: 3641

#Unit 3. Fundamental Processes

Class I and Class II aminoacyl–tRNA synthetases differ in several ways: Structural motifs, Anticodon recognition, Site of aminoacylation, Amino acid specificity.