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The first amino acid inserted into a new polypeptide chain in eukaryotic cells is always?
Wiki User
∙ 13y ago
The first codon is usually the start codon AUG. AUG is normally the only codon for the amino acid methionine. There are exceptions. The E.coli lactose operon contains four genes: lacI, lacZ, lacY and lacA. The amino acid sequence for all four of these genes begins with methionine. Only lacZ and lacY begin with AUG. LacI begins with GUG, which normally codes for valine. LacA begins with UUG, which normally codes for leucine. Still, the starting amino acid seems always to be methionine. Perhaps the ribosome is primed with methionine transfer RNA when it begins its translation of the messenger RNA. However, the site of translation initiation is not always at an AUG start codon. For the DNA and amino acid sequences of the E.coli lactose operon see http://www.ncbi.nlm.nih.gov/nuccore/146575?report=graph.
Wiki User
∙ 13y ago
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What is the correct order smallest to largest protein - amino acid - polypeptide?
Amino acids---->peptide---->polypeptide--->protein.
Is polypeptide an amino acid?
Polypeptide is a part of an amino acid. Check out -> Deamination.
Composed of long chains of amino acids?
Polypeptide bonds....polypeptide bonds equal proteins ;)
Building block unit of a polypeptide chain?
Amino acids are the building block units of a polypeptide chain or a protein. These amino acids are linked together through peptide bonds.
Is A polypeptide is a sequence of proteins or amino acids?
Yes, a polypeptide is a sequence of amino acids.
What is the correct order smallest to largest protein - amino acid - polypeptide?
Amino acids---->peptide---->polypeptide--->protein.
Is polypeptide an amino acid?
Polypeptide is a part of an amino acid. Check out -> Deamination.
Composed of long chains of amino acids?
Polypeptide bonds....polypeptide bonds equal proteins ;)
A long chain of amino acids?
polypeptides - The Dude That is Friends with THE DUDE
Building block unit of a polypeptide chain?
Amino acids are the building block units of a polypeptide chain or a protein. These amino acids are linked together through peptide bonds.
How many strings of amino acids dose a polypeptide consist of?
a polypeptide is ten or more amino acids bonded together
Is A polypeptide is a sequence of proteins or amino acids?
Yes, a polypeptide is a sequence of amino acids.
What do you call a chain of 25 amino acids?
a chain of 25 amino acids can be called a peptide chain ---------------------------------------------------------------------------------- Two or united amino acids form a *dipeptide* Three a *tripeptide* Ten or more a *polypeptide* More than 50 *protine* Therefore a chain of 25 amino acids is a polypeptide :D
What makes up the polypeptide alanine?
Alanine is not a polypeptide. It's an amino acid.
A polypeptide can best be described as?
Short sequence of amino acids. Insulin is a polypeptide of about 53 [amino-acid] residues; it is like Pluto - is it a protein or not?
A long chain of many amino acids is called a?
Polypeptides are chains of amino acids linked by peptide bonds.
What monomer makes up a polypeptide?
amino acids
