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Proteins are made of amino acids joined together by peptide bonds. An amino acid consists of a central carbon atom that is bonded to a hydrogen atom, an amine group (NH2), a carboxyl group (COOH) and an R group that is different depending on which amino acid it is. The Amine group of one amino acid looses an H and the carboxyl group of another amino acid looses an OH and the N and C bond to one another to form a peptide bond and link the amino acids.
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What is the permanent change in the structure of a protein?
A permanent change in the structure of a protein is known as denaturation. This alteration disrupts the protein's native shape and can be caused by factors such as heat, pH changes, or chemical exposure, leading to loss of function. Denaturation is usually irreversible.
What is the chemical structure and molecular formula of phytohaemagglutinin PHA?
Phytohaemagglutinin (PHA) is a protein found in certain plants, particularly in legumes like red kidney beans. It does not have a specific chemical structure or molecular formula like organic compounds, as it is a complex protein made up of numerous amino acids arranged in a specific sequence.
A denatured protein is one that?
A denatured protein is one that has lost its normal structure and function due to factors such as heat, pH changes, or chemical exposure. This disruption alters the protein's shape, leading to a loss of its biological activity.
What are structure levels of a protein?
The structure levels of a protein are primary (sequence of amino acids), secondary (alpha helices and beta sheets), tertiary (overall 3D shape of the protein), and quaternary (interactions between multiple protein subunits). Each level of structure is critical for the protein to perform its specific function.
What is it called when you heat a protein and ruin its structure?
It is called protein denaturation when heat causes the protein's structure to unfold and lose its functional shape. This can result in the loss of the protein's biological activity or ability to perform its intended function.
Why do you have to need types of protein?
aminoacids,chemical structure
How is a protein changed by denaturation?
The chemical structure and of course the chemical and physical properties are changed,
In which structure does extracellular chemical digestion of protein begin?
Stomach
Is making a protein shake a chemical of physical change?
Shaking is a physical process.The chemical structure and composition of the compound is not changed.
What is the significance of the torsion angle in protein structure and function?
The torsion angle in protein structure is important because it determines the orientation of chemical bonds in the protein backbone. This angle affects the overall shape and stability of the protein, which in turn influences its function. By controlling the folding and flexibility of the protein, the torsion angle plays a crucial role in protein structure and function.
Why is the structure of a protein important for its function?
The structure of a protein is important for its function because the specific arrangement of amino acids determines how the protein interacts with other molecules. This structure allows the protein to carry out its specific biological roles, such as catalyzing chemical reactions or serving as structural components in cells and tissues. Any changes in the protein's structure can affect its function and potentially lead to diseases or disorders.
What is the significance of the amino acid pi of lysine in protein structure and function?
The amino acid pi of lysine plays a crucial role in protein structure and function by forming chemical bonds with other molecules, helping to stabilize the protein's shape and function. This interaction is important for maintaining the overall structure and function of the protein.
What determines the specific function of a protein?
The specific function of a protein is determined by its unique sequence of amino acids, which dictates its shape and structure. This structure allows the protein to interact with other molecules in a specific way to carry out functions such as catalyzing chemical reactions, transporting molecules, and supporting cell structure.
What is the permanent change in the structure of a protein?
A permanent change in the structure of a protein is known as denaturation. This alteration disrupts the protein's native shape and can be caused by factors such as heat, pH changes, or chemical exposure, leading to loss of function. Denaturation is usually irreversible.
Why does an enzyme become denatured when heated?
Heat breaks chemical bonds in protein molecule which distorts its structure and catalytic activity .
Which level of protein structure is unaffected when a protein is denatured?
The primary structure
What is the native structure of a protein and how does it contribute to its function?
The native structure of a protein refers to its specific three-dimensional shape, which is determined by the sequence of amino acids in the protein. This structure is crucial for the protein to carry out its function effectively. The unique shape of a protein allows it to interact with other molecules in the body, such as enzymes or receptors, in a specific and precise manner. This interaction is essential for the protein to perform its biological role, whether it be catalyzing chemical reactions, transporting molecules, or providing structural support. In essence, the native structure of a protein is essential for its function because it determines how the protein can interact with other molecules in the body.
