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Its substrate may not fit properly in the active site.
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Which two levels of protein structure principally determine the active site of an enzyme?
Quaternary and Tertiary levels of protein structure principally determine the active site of an enzyme.
Is an enzyme a structural protein or functional protein?
Yes, enzymes are proteins and it is their sequence of amino acids (primary structure) that determines what kind of an enzyme it is and makes all the enzymes unique and it is the tertiary structure of enzymes that maintains their shape and give rise to the unique active site. When an enzyme is denatured, it loses its tertiary structure and therefore its shape.
What is the loss of structure of an enzyme due to the increase in temperature called?
This is called denaturing.
Quaternary structure of proteins?
The quaternary structure is the overall structure of an enzyme complex. This is made of at least two separate polypeptide chains. The 3D structure of one polypeptide is known as the tertiary structure.
How is protein structure involved in enzyme specificity?
The R groups of the amino acids in its active site
Changes in pH or temperature decrease enzyme activity because bonds break and the enzyme returns to its tertiary structure?
Changes in pH or temperature decrease enzyme activity because bonds b reak and the enzyme returns to it's PRIMARY structure. (not tertiary)
Which two levels of protein structure principally determine the active site of an enzyme?
Quaternary and Tertiary levels of protein structure principally determine the active site of an enzyme.
Do antibodies have a quaternary structure?
No. It is possible for an enzyme to have a quaternary structure, but it strictly depends on the enzyme. For example, β-galactosidase, more commonly known as lactase, is the enzyme that breaks the β linkage between the disaccharide lactose into its componenets glucose and galactose. β-galactosidase is a tetramer, meaning it has four subunits. This is an example of an enzyme with a quaternary structure. Enzymes can also be tertiary structures, meaning only one subunit. The quaternary structure is just made up of more than one tertiary structures. Depending on the enzyme, it can either function with only one amino acid chain coiled into a conformation (tertiary) or a group of amino acid chains coiled into a conformation (quaternary).
Optimal activity of an enzyme depends upon its Primary structure or Secondary structure or tertiary structure or amino acid sequence or disulphide bridge stability?
Primary structure
Is an enzyme a structural protein or functional protein?
Yes, enzymes are proteins and it is their sequence of amino acids (primary structure) that determines what kind of an enzyme it is and makes all the enzymes unique and it is the tertiary structure of enzymes that maintains their shape and give rise to the unique active site. When an enzyme is denatured, it loses its tertiary structure and therefore its shape.
What is the loss of structure of an enzyme due to the increase in temperature called?
This is called denaturing.
Quaternary structure of proteins?
The quaternary structure is the overall structure of an enzyme complex. This is made of at least two separate polypeptide chains. The 3D structure of one polypeptide is known as the tertiary structure.
Why is hair not an enzyme?
Hair like enzymes are made of protein. However for a protein to be an enzyme it must have a very specific tertiary structure (shape) and have an active site that has a complementary shape to part of its substrate molecule. ie the enzyme must fit with the thing that it breaks down The tertiary sructure of hair is not highly folded and does not have a complementary shape to a substrate molecule therefore it is not an enzyme
How is protein structure involved in enzyme specificity?
The R groups of the amino acids in its active site
What is the key feature of a protein or enzyme that makes its function correctly?
The most important feature that makes functional to a protein or an enzyme is its three dimensional structure based on its tertiary structure. Either, a structural protein, where alpha helices and beta sheets are vital to its function, or an enzyme, where the shape of its active site is crucial for its biological activity, the tertiary structure is the most important characteristic. In fact, the process called "protein folding" is one of the key biochemical areas of study for the scientific community.
Is collagen a secondary or tertiary structure?
With most proteins, it has a secondary and tertiary structure.
What happens to an enzyme when its put into a hotter or cooler place?
It is now well established that proteins (enzymes) denature at both high and low temperatures. Denaturation, by heat or cold refers to the loss of the 3-dimensional structure of the enzyme, which otherwise it possesses under physiological conditions.When a enzyme experiences this structural instability, it leads to a loss of its functionality, since the 3D structure of a enzyme can be directly co-related with its function.
