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The first amino acid inserted into a new polypeptide chain in eukaryotic cells is always?
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.
What else can I help you with?
Is polypeptide an amino acid?
No, a polypeptide is not an amino acid. A polypeptide is a chain of amino acids linked together by peptide bonds. Amino acids are the building blocks of proteins and are the individual units that make up a polypeptide chain.
What is the correct order smallest to largest protein - amino acid - polypeptide?
The correct order from smallest to largest is: amino acid, polypeptide, protein. Amino acids are the building blocks of proteins, which are made up of one or more polypeptide chains. The polypeptide chains fold and interact to form the final protein structure.
A long chain of many amino acids is called a?
Polypeptides are chains of amino acids linked by peptide bonds.
Is A polypeptide is a sequence of proteins or amino acids?
A polypeptide is a chain of amino acids linked together by peptide bonds. It is not a sequence of proteins, but rather a precursor to protein formation. When a polypeptide chain folds into a specific structure, it becomes a functional protein.
Building block unit of a polypeptide chain?
The building block unit of a polypeptide chain is an amino acid. Amino acids are organic compounds containing an amine group and a carboxylic acid group, along with a side chain that is specific to each amino acid. Multiple amino acids are linked together via peptide bonds to form a polypeptide chain.
Is polypeptide an amino acid?
No, a polypeptide is not an amino acid. A polypeptide is a chain of amino acids linked together by peptide bonds. Amino acids are the building blocks of proteins and are the individual units that make up a polypeptide chain.
What is the correct order smallest to largest protein - amino acid - polypeptide?
The correct order from smallest to largest is: amino acid, polypeptide, protein. Amino acids are the building blocks of proteins, which are made up of one or more polypeptide chains. The polypeptide chains fold and interact to form the final protein structure.
A long chain of many amino acids is called a?
Polypeptides are chains of amino acids linked by peptide bonds.
Is A polypeptide is a sequence of proteins or amino acids?
A polypeptide is a chain of amino acids linked together by peptide bonds. It is not a sequence of proteins, but rather a precursor to protein formation. When a polypeptide chain folds into a specific structure, it becomes a functional protein.
How many strings of amino acids dose a polypeptide consist of?
a polypeptide is ten or more amino acids bonded together
What is smaller amino acid protein dipeptide or polypeptide?
A dipeptide is smaller than a polypeptide. A dipeptide consists of two amino acids linked together, whereas a polypeptide is made up of multiple amino acids linked together in a chain.
Building block unit of a polypeptide chain?
The building block unit of a polypeptide chain is an amino acid. Amino acids are organic compounds containing an amine group and a carboxylic acid group, along with a side chain that is specific to each amino acid. Multiple amino acids are linked together via peptide bonds to form a polypeptide chain.
WHich of these is the smallest.?
Dipeptide,amino acid,polypeptide,protein Amino Acid is the answer
What are polypeptide composed of?
A polypeptide is a chain of amino acids linked by peptide bonds, with a molecular weight of up to about 10,000. It is composed of amino acids.
To what does the term polypeptide specifically refer?
Amino acids are combined via peptide bonds to form a polypeptide so a 'polypeptide' is a chain of amino acids that have been linked together by dehydration synthesis.
What does the term polypeptide specifically refer?
Amino acids are combined via peptide bonds to form a polypeptide so a 'polypeptide' is a chain of amino acids that have been linked together by dehydration synthesis.
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
