The Gre factors/TF11S enable the polymerase to cleave a few ribonucleotides from the 3' terminus of the RNA product, thereby allowing the catalytic site of RNA polymerase to be realigned with the 3' -OH.

TLS Online TPP Program

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#Unit 3. Fundamental Processes

The tRNAs provide the physical interface between the amino acids being added to the growing polypeptide chain and the codons in the mRNA.

TLS Online TPP Program

#Id: 3608

#Unit 3. Fundamental Processes

Aminoacyl-tRNA synthetases couple amino acids to specific tRNAs that recognize the appropriate codon(s).

TLS Online TPP Program

#Id: 3609

#Unit 3. Fundamental Processes

The ribosome coordinates the correct recognition of the mRNA by each tRNA and catalyzes peptide-bond formation between the growing polypeptide chain and the amino acid attached to the selected tRNA.

TLS Online TPP Program

#Id: 3611

#Unit 3. Fundamental Processes

Degeneracy of the Genetic Code

TLS Online TPP Program

#Id: 3612

#Unit 3. Fundamental Processes

The initiation codon AUG is the most common signal for the beginning of a
polypeptide in all cells.

TLS Online TPP Program

#Id: 3613

#Unit 3. Fundamental Processes

The termination codons (UAA, UAG, and UGA), also called stop codons or nonsense codons.