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Pepsin is an enzyme found in the stomach.
It breaks proteins down into peptides.
Pepsinogen:
* is an inactive enzyme, so it doesn't digest the cells in the lining of the stomach. * is converted to pepsin by acid in the stomach * is secreted by cells in the lining of the stomach by zymogen (or chief) cells.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoPepsin is an enzyme that breaks down proteins in the stomach. It is secreted as pepsinogen by the chief cells of the gastric glands. Then, once pepsinogen encounters an acidic environment, it changes shape into its active form, pepsin.
Wiki User
∙ 16y agoglands in the lining epithelium of the canal itself
Wiki User
∙ 15y agoPepsin is found in the stomach. The enzyme digests protein.
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Why is pepsin stable at a low pH?
Pepsin is a an acidic proteolytic enzyme activated from its precursor pepsinogen. Pepsin exhibits optimal activit at pH 1.5 to 2. It is highly active and stable at acidic pH and can be inactivated by pH 8.5 -11. Their amino acid composition is the reason for its stability.
Is pepsin a peptidase?
No. Pepsin is an enzyme that breaks down protein to peptides. Peptidase is another enzyme that breaks down peptides to amino acid. http://www.answers.com/topic/pepsin http://www.answers.com/topic/peptidase
Did pepsin act in absence of HCL?
no,pepsin does not acts in the absence of hydrochloric acid
Why does protein digestion require the presence of both pepsin and HCl?
Protein digestion requires the presence of both pepsin and HCl because pepsin needs an acidic environment to be able to "work" or do its job. Pepsin needs an environment with a pH around 2, which is roughly the pH of HCl. Therefore, HCl aids pepsin in protien digestions by creating an optimal environment for pepsin to work and digest proteins.
Do you expect that optimal PH for pepsin would be the same as that for rennin?
The optimal pH for pepsin and rennin is about the same, 2.0 and 3.4 respectively. Pepsin is slightly more acidic.
Does pepsin affect pH?
Pepsin doesn't affect the pH but it is active in an acidic environment.
What organ is associated with pepsin?
The stomach (it digests proteins).
What is the difference between pepsin and pepsinogen?
Pepsin is a powerful protein digesting enzyme which is far too dangerous in its active form so it is released in an inactive pepsinogen form by the cell and activated only in the digestive tract where it is required to be active.
Why can pepsin not be produced in its active form?
Pepsin degrades proteins so if it was active it would immediately begin digesting all the proteins in the cell. Therefore it is produced from a precursor known as a zymogen or proenzyme. Pepsin's proenzyme form is pepsinogen which is transformed to the activated pepsin protein.
Why it is so that pepsin enzyme will not act if its active site is occupied by carbohydrate molecules?
The carbohydrate molecule should not get fitted into the pepsin enzyme.
Why would you predict the pepsin would not digest starch?
Because Pepsin is the active form of a protein manufactured in the stomach.
In the stomach the protein is digested by?
That is a proteolytic enzyme. Name of the enzyme is pepsin. It is secreted as inactive pepsinogen, which become active when it comes in contact with the hydrochloric acid, in the stomach.
In which Organ of the digestive system does pepsin works?
Breaks down the proteins into peptide chains
What will happen if body just makes fully active form of enzymes?
Consider the stomach. The inactive form of the digestive enzyme pepsin is called pepsinogin. ( spelling may be wrong ) It takes the release of hydrochloric acid in the stomach to activate this pre-enzyme into pepsin, the active form. You would be digesting your own stomach tissue if pepsin was always active.
Explain the effect of pH on pepsin in terms of the active site of the enzyme?
nothing
Does hydrochloric acid produced in the stomach destroy pepsin?
No quite the opposite the low pH allows the autocleavage of pepsins zymogen pepsinogen into the active form pepsin.
Would pepsin work in your mouth?
No. Pepsin is the active form of a protein manufactured in the stomach called pepsinogen. In order to become active, it has to come into contact with HCl (hydrochloric acid). HCl isn't present in your mouth (I hope!), so pepsinogen, even if it WERE in your mouth, could never become active there.No, the pepsin enzyme is located in the stomach, the enzymes amylase and lipase are found in saliva in the mouth
