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Enzymes are the protein molecules which are involved in the metabolic reactions in the body. These enzymes act as catalysts to various biochemical reactions that take place both in the cell and in extracellular fluids such as stomach acid. They leave the reaction as they entered it with no net chemical changes to the enzyme itself, although some enzymes will chemically react with substrates to form enzyme-substrate intermediates part way through a reaction. They accelerate the reaction by decreasing the activation energy of the reaction, and by weakly binding and orienating substrates into reaction favourable conditions. Enzymes can be called biocatalysts. Most enzymes are proteins but not all proteins are enzymes. There are also Ribozymes, which are enzymes but catalysis is by RNA rather than protein. The ribozyme was first observed by Zaug & Cech in 1986. For their work on ribozymes Thomas Cech and C. Altman received a Nobel prize in 1989. There are several different types of enzymes. Enzymes are highly specific, meaning a particular enzyme will only take part in the particular reaction that it was designed for. • Isomerases - involved in isomerization reactions • Ligases - used to join bonds [ATP is required] • Hydrolases - involved in the hydrolysis of bonds in the presence of water • Transferases - these type of enzymes are helpful to transfer one substrate to another. • Lyases - involved in non-hydrolytic cleavage of bonds •Oxidoreductases - involved in oxidation and reduction reactions This list is non-exhaustive - there are many other types of enzymes as well.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoEnyzmes make chemical reactions faster in a process called catalysis.
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Enzyme may lose ability to function because of what?
Shape. When an enzyme is overheated the bonds between molecules that make up the enzyme breaks, this changes the shape of the enzyme's active site. And as the enzyme is highly specific and would only work on one substrate which fits its active site, the enzyme will be totally denatured and won't activate anymore if it loses its shape.
What enzyme is referred to as Akt?
Akt is the enzyme which is known as protein kinase B. Its scientific term is thymoma viral proto-oncogene and its particular job is to help promote cellular revival.
What is the Difference between enzyme and regulatory enzyme?
An enzyme is one kind of protein that can catalyze a specific reaction whereas a regulatory enzyme is the enzyme which can regulate a series of reaction which undergo in the living organism. So we can say every enzyme is not a regulatory one but the regulatory enzymes are obviously a special kind of enzyme.
What class of food begins to change chemically in the mouth?
Carbohydrates from your food begin to get converted into sugars in your mouth. Ptylin is the enzyme form your saliva does the same job.
What kind of molecule is an enzyme-?
The type of molecule that is an enzyme is a protein molecule.
True or False The shape of an enzyme allows it to do its job?
It is true that the shape of an enzyme is what allows it to do it's job.
If an enzyme is a protein how might you change the specificity of such an enzyme?
What an enzyme does is based on its shape, therefore you would have to change it on a molecular level in order to alter its job.
Is an enzyme specific to s particular job?
Yes
How does an enzyme do its job?
http://en.wikipedia.org/wiki/Enzymes this web address explains everything
What is the job of ptyalin?
The enzyme ptyalin ,or salivary amylase acts on starches and converts them to maltose.
Enzyme may lose ability to function because of what?
Shape. When an enzyme is overheated the bonds between molecules that make up the enzyme breaks, this changes the shape of the enzyme's active site. And as the enzyme is highly specific and would only work on one substrate which fits its active site, the enzyme will be totally denatured and won't activate anymore if it loses its shape.
What enzyme is referred to as Akt?
Akt is the enzyme which is known as protein kinase B. Its scientific term is thymoma viral proto-oncogene and its particular job is to help promote cellular revival.
How might very low pH affect an enzyme's hydrogen bonds?
A very low pH can break the hydrogen bonds in an enzyme which causes the shape of the enzyme to change shape making the enzyme unable to do it's job. This is called "denaturation" However some enzymes such as pepsin only work in a low pH (pepsin works best in a pH of about 3) so it does depend on the enzyme.
What can you do to regain the activity of the enzyme?
The enzyme is inactive at this point. New enzyme must be added to regain enzyme activity
What to enzymes do in an enzyme-substrate?
in an enzyme-substrate complex, the enzyme acts on the substrate .
In humans chemical digestion is accomplished by enzyme action that begins in the mouth in ends in the?
In the small intestine where enzymes from the pancreas and small intestine finsh the job
Does enzyme has proteins?
An enzyme is a protein
