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If a protein contains three polypeptide chains that are held together by bonding forces what kind of structure does the protein have?
Dc6007
The protein has a quaternary structure.
In addition, each polypeptide chain has a primary, secondary, and tertiary structure.
The primary structure is the sequence of amino acids in a chain.
The secondary structure is the next higher level of arrangement of a chain in space, for example coiling into a alpha-helix, shaping into a beta-pleated sheet, or forming into a turn or loop.
Tertiary structure is a yet higher-level folding of the chain into its final three-dimensional shape.
Some proteins have only one chain, but if there are two or more, the combination of these chains to form the functional protein is the quaternary structure.
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What is the level of protein structure that describes all aspects of the three-dimensional folding of a polypeptide?
Primary: Simple string of amino acids called a polypeptide. Secondary: The varied hydrogen bonding of the side chains resulting in alpha helixes and beta sheets. Tertirary: The R group bondingd; hydophobic, hydrophilic, hydrogen bonding and disulfide bonding, which results in the globular, actual protein. Quarternary: The construction of multi protein subunits from tertiary structure. Such as hemeglobin.
What are the forces which create the tertiary structure of a polypeptide?
Four of them are; hydrophobic and hydrophilic interactions, hydrogen bonding and disulphide bridging.
Where does tRNA move after this bonding of lysine to the polypeptide?
E site
Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the?
- A. proper bonding of the anticodon to the codon and B. proper attachment of amino acids to tRNAs so A and B
The sequence of amino acids joined together refers to the?
Peptide sequence or amino acid sequence is the order in which amino acid residues, connected by peptide bonds, lie in the chain in peptides and proteins. The sequence is generally reported from the N-terminal end containing free amino group to the C-terminal end containing free carboxyl group. Peptide sequence is often called protein sequence if it represents the primary structure of a protein.
Which primarily responsible for the helical structure of a polypeptide chain?
Hydrogen bonding
What is the level of protein structure that describes all aspects of the three-dimensional folding of a polypeptide?
Primary: Simple string of amino acids called a polypeptide. Secondary: The varied hydrogen bonding of the side chains resulting in alpha helixes and beta sheets. Tertirary: The R group bondingd; hydophobic, hydrophilic, hydrogen bonding and disulfide bonding, which results in the globular, actual protein. Quarternary: The construction of multi protein subunits from tertiary structure. Such as hemeglobin.
The backbone of a polypeptide could be represented by?
The backbone of a polypeptide could be represented by a chain of nitrogen and hydrogen atoms. The polypeptide backbone is the key contributor to protein secondary structure, which involves backbone-to-backbone hydrogen bonding.
What are the forces which create the tertiary structure of a polypeptide?
Four of them are; hydrophobic and hydrophilic interactions, hydrogen bonding and disulphide bridging.
What structure describes the alpha-helices and beta-sheets that are formed by hydrogen bonding vetween backbone atoms located near each other in the polypeptide chain?
This bonding is done in the secondary structure of the protein.
What is a difference in the structure of proteins and polysaccharides?
Polysaccharides are essentially many carbon sugar "rings" linked together. They are carbohydrates, and our bodies break them down into monosaccharides (single "rings") to gain energy. To provide energy is their main function. In contrast, a peptide bond is formed between two amino acids via dehydration synthesis. Amino acids are the monomers for proteins within the body, who function in part to catalyze reactions and carry out other directions of DNA. Many peptide bonded amino acids = a polypeptide. The most basic difference would be that polypeptides are proteins, where as polysaccharides are carbohydrates.
What is the difference between the structure of a protein and an amino acid?
think of it like legos. single Lego pieces are like amino acids and they get bonded together to form a longer chain called a polypeptide. polypeptides bind to other polypeptides by hydrogen bonding to each other and form a protein with structure.
Where does tRNA move after this bonding of lysine to the polypeptide?
E site
Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the?
- A. proper bonding of the anticodon to the codon and B. proper attachment of amino acids to tRNAs so A and B
The sequence of amino acids joined together refers to the?
Peptide sequence or amino acid sequence is the order in which amino acid residues, connected by peptide bonds, lie in the chain in peptides and proteins. The sequence is generally reported from the N-terminal end containing free amino group to the C-terminal end containing free carboxyl group. Peptide sequence is often called protein sequence if it represents the primary structure of a protein.
What characteristic of amino acids determine the primary structure of proteins - Acid-base properties - Side chain composition - Hydrogen bonding properties - Sequence in polypeptide chains?
If you are asking which of the four following answers determines the primary structure of proteins, the answer would be d) sequence of polypeptide chains. After translation and transcription, the order of the bases codes for the proteins that are made. Hope that helps!
How does the shape of a protein change as it goes from primary to quaternary?
The primary structure of a protein is the unique sequence of amino acids. There are 20 possible amino acids, and the primary structure consists of a string of amino acids held together by peptide bonds. The secondary structure occurs when the amino acid chain becomes coiled or folded in alpha helix or beta pleated sheets. The protein develops its three-dimensional shape in the tertiary structure. Van der Waals interactions, disulfide bonds, hydrophobic interactions, and ionic bonding all impact the tertiary structure. Finally, the quaternary structure is made up of more than one polypeptide chain (a polypeptide chain is the string of amino acids described in the primary structure). Hope this helps!
