Study Notes on mRNA Codons and Amino Acids
Genetic Code and mRNA Codons
Introduction
- The genetic code is a set of rules that define how the sequence of nucleotide bases in mRNA is translated into the amino acid sequence of proteins.
mRNA Sequence: GAU
- The mRNA sequence GAU translates into the following amino acid:
Codons and Corresponding Amino Acids
- The following are various mRNA codons and the amino acids they code for:
Codons Starting with U (Uracil)
- UOU: Phenylalanine
- UCU: Serine
- UAU: Tyrosine
- UGU: Cysteine
- UUC: Phenylalanine
- UCC: Serine
- UAC: Tyrosine
- UGC: Cysteine
- UUA: Leucine
- UCA: Serine
- UAA: Stop codon
- UGA: Stop codon
- UUG: Leucine
- UCG: Serine
- UAG: Stop codon
- UGG: Tryptophan
Codons Starting with C (Cytosine)
- CUU: Leucine
- CCU: Proline
- CAU: Histidine
- CGU: Arginine
- CUC: Leucine
- CCC: Proline
- CAC: Histidine
- CGC: Arginine
- CUA: Leucine
- CCA: Proline
- CAA: Glutamine
- CGA: Arginine
- CUG: Leucine
- CCG: Proline
- CAG: Glutamine
Codons Starting with A (Adenine)
- AUU: Isoleucine
- ACU: Threonine
- AAU: Asparagine
- AGU: Serine
- AUC: Isoleucine
- ACC: Threonine
- AAC: Asparagine
- AGC: Serine
- AUA: Isoleucine
- ACA: Threonine
- AAA: Lysine
- AGA: Arginine
- AUG: Methionine (Start codon)
- ACG: Threonine
- AAG: Lysine
- AGG: Arginine
Codons Starting with G (Guanine)
- GUU: Valine
- GCU: Alanine
- GAU: Aspartate
- GGU: Glycine
- GUC: Valine
- GCC: Alanine
- GAC: Aspartate
- GGC: Glycine
- GUA: Valine
- GCA: Alanine
- GAA: Glutamate
- GGA: Glycine
- GUG: Valine
- GCG: Alanine
- GAG: Glutamate
- GGG: Glycine
Conclusion
- The mRNA codon GAU specifies the amino acid Aspartate, highlighting the essential relationship between nucleotide sequences in mRNA and the corresponding amino acids in proteins.