Trx regulates plastid phosphoribulokinase (PRK) and NADP–glyceraldehyde-3‐phosphate dehydrogenase (NADP–GAPD) by noncovalent associations with the nuclear‐encoded chloroplast protein CP12 (an ≈8.5‐kDa protein)

TLS Online TPP Program

#Id: 3627

#Unit 3. Fundamental Processes

Mitochondria have their own tRNAs, so their code variations do not affectthe much larger cellular genome.

TLS Online TPP Program

#Id: 3628

#Unit 3. Fundamental Processes

The genetic code, in effect, is defined by two elements:

(1) the anticodons on tRNAs

(2) the specificity of the enzymes.

TLS Online TPP Program

#Id: 3629

#Unit 3. Fundamental Processes

When several codons encode the same amino acid and utilize multiple tRNAs, not all of the codons are used with equal frequency. In a phenomenon called codon bias.

TLS Online TPP Program

#Id: 3630

#Unit 3. Fundamental Processes

Transfer RNAs base-pair with mRNA codons at a three-base sequence on the tRNA called the anticodon.

TLS Online TPP Program

#Id: 3631

#Unit 3. Fundamental Processes

Wobble Allows Some tRNAs to Recognize More than One Codon.

TLS Online TPP Program

#Id: 3632

#Unit 3. Fundamental Processes

The first two bases of an mRNA codon always form strong Watson-Crick base pairs with the corresponding bases of the tRNA anticodon and confer most of the coding specificity.