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Why polypeptide chains are always called as protein but Proteins are not always polypeptide chains?
Wiki User
∙ 12y ago
Peptides (from the Greek πεπτίδια, "small digestibles") are short polymers formed from the linking, in a defined order, of α-amino acids. The link between one amino acid residue and the next is known as an amide bond or a peptide bond. Proteins are polypeptide molecules (or consist of multiple polypeptide subunits). The distinction is that peptides are short and polypeptides/proteins are long.
Wiki User
∙ 15y ago
Wiki User
∙ 10y ago"'Polypeptide' is not quite synonymous with 'protein.' The relationship is somewhat analogous to that between a long strand of yarn and a sweater of a particular size and shape that one can knit from the yarn. A functional protein is not just a polypeptide chain, but one or more polypeptides precisely twisted, folded, and coiled into a molecule of unique shape. It is the amino-acid sequence of a polypeptide that determines what three-dimensional conformation the protein will take." (p. 70, Campbell et al., 1999)
Wiki User
∙ 12y agoProteins whose polypeptide chains are folded into rounded compact shapes are
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Proteins is a long string of?
amino acids form a chain called a polypeptide chain and form a protein
When a polypeptide is folded it is called what?
Secondry protein
The step in protein synthesis where RNA directs the synthesis of a polypeptide or protein is called?
transcription
The organelles that build proteins for cells are called?
The organelles that build proteins are called ribosomes. These ribosomes build proteins during transcription where mRNA and tRNA are complementary strands of each other that code for amino acids. These amino acids bind together and are eventually released from the ribosome as a polypeptide or protein.
Proteins differ from one another because?
Because the number of amino acids and their exact sequence in the polypeptide chain is different for each protein; this is called the primary structure, and it determines the secondary structure of the protein - the unique three-dimensional shape that the protein can fold into.
What molecule is built of amino acids?
Polypeptide chains, commonly called proteins
A long chain of amino acids?
polypeptides - The Dude That is Friends with THE DUDE
Proteins is a long string of?
amino acids form a chain called a polypeptide chain and form a protein
Chains of amino acid?
A chain of amino acids make up a protein and is also called a polypeptide chain.
When a polypeptide is folded it is called what?
Secondry protein
Is insulin a polymer?
Insulin is a protein, so yes it is a polymer of amino acids, also called a polypeptide chain
What is another name for protein?
Another name for a polypeptide is a Protein.
Which of the 4 macromolecules is also called a polypeptide chain?
Proteins.
What do protein consist of?
Proteins are polymers made up of amino acid monomers. Any chain of two or more amino acids is called a peptide. When many amino acids are joined together, the result is called a polypeptide, or a protein.
Simple proteins are composed of only what?
Simple proteins are composed of only amino acids. These proteins are also called monomeric proteins because they consist of a single polypeptide chain. The sequence of amino acids determines the structure and function of the protein.
Polymer of a protien?
Normally you can just refer to the polymers just as proteins, but if you want to be specific, you can say polypeptide, thereby excluding amino acids, dipeptides, and oligopeptides. The monomers of proteins are amino acids.
What help proteins form?
A class of proteins called chaperons. Two types. The chaperons are small proteins that meet the polypeptide chain as it comes off the ribosomes and helps in folding the nascent protein. Chaperonins are much larger barrel shaped protein complexes with entry ways. These complexes take misshapen proteins into themselves and reshape them.
