What is the codon for protein?

What is the codon for protein?

A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids.

How is a codon matched to the proper protein monomer?

The tRNA carries the amino acid that corresponds to that codon. The next mRNA codon is now exposed in the ribosome’s other docking site. A tRNA with the complementary anticodon is attracted to the ribosome and binds to this codon. The tRNA carries the next amino acid in the polypeptide chain.

What determines the sequence of monomers in a protein?

Proteins are formed by joining of a large number of monomer units. Proteins contain one or more polypeptides. Each polypeptide chain is formed by joining of a large number of amino acids through chemical bonds known as peptide bonds. The gene coding for that specific protein determines the sequence of amino acids.

Is a codon a monomer?

Each consecutive triplet of mRNA bases, called codon, determines a certain amino acid in the translation procedure. Amino acids are the monomers of proteins, just as the nucleotides are the monomers of DNA and RNA molecules.

What are the three parts of a protein monomer?

Amino acids are the monomers that make up proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom bonded to an amino group (–NH2), a carboxyl group (–COOH), and a hydrogen atom.

What are monomer of proteins?

amino acids
For example, proteins are composed of monomers called amino acids. They are linked together to form a polypeptide chain, which folds into a three dimensional (3D) structure to constitute a functional protein (Figure 1).

How many monomers are in a protein?

Usually about 20 types of amino acid monomers are used to produce proteins.

Which of the following are monomers of proteins?

Amino acids
Amino acids are the monomers of proteins.

What is the monomer of proteins?

What is a codon in a DNA sequence?

Codon. A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid. The genetic code describes the relationship between the sequence of DNA bases (A, C, G, and T) in a gene and the corresponding protein sequence that it encodes.

What is the start and stop codon of a protein?

One “ Start ” codon (AUG) marks the beginning of a protein. AUG encodes the amino acid, called Methionine. Three “ Stop ” codons mark the end of a protein and terminate the translation. Who can read these codes? Ribosome as a decoding machine

How many reading frames are there in a codon sequence?

Depending on what is considered the first letter of the first codon, there are three distinct reading frames for a sequence. For example, the sequence ‘GCGATAGTG’ may comprise the codons GCG-ATA-GTG, if the first reading frame is considered (we begin at the first nucleotide in the sequence).

What is the function of the first codon in protein synthesis?

Its presence identifies the first codon to be translated, and sets the reading frame for the entire sequence, allowing the correct protein to be synthesized. While 61 of the 64 codons code for 20 amino acids, the remaining 3 represent stop signals.

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