![SOLVED: In protein digestion, I understand that pepsinogen converts to pepsin in the presence of HCl and pepsin. I don't understand how pepsin has to already be present for this conversion when SOLVED: In protein digestion, I understand that pepsinogen converts to pepsin in the presence of HCl and pepsin. I don't understand how pepsin has to already be present for this conversion when](https://cdn.numerade.com/ask_previews/14230b22-7868-43c5-910f-c8a2db70121d_large.jpg)
SOLVED: In protein digestion, I understand that pepsinogen converts to pepsin in the presence of HCl and pepsin. I don't understand how pepsin has to already be present for this conversion when
![Zymogen & Proenzymes Activation & Examples | What is a Zymogen? - Video & Lesson Transcript | Study.com Zymogen & Proenzymes Activation & Examples | What is a Zymogen? - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/videopreview-full/2yu0kj8rfy.jpg)
Zymogen & Proenzymes Activation & Examples | What is a Zymogen? - Video & Lesson Transcript | Study.com
![Pepsin, a digestive enzyme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids. The activation of Pepsin, a digestive enzyme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids. The activation of](https://homework.study.com/cimages/multimages/16/362px-gene_expression_eukaryote7602188685660444474.png)
Pepsin, a digestive enzyme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids. The activation of
![Pathways of activation of pepsinogen to pepsin. PG, pepsinogen; PG*,... | Download Scientific Diagram Pathways of activation of pepsinogen to pepsin. PG, pepsinogen; PG*,... | Download Scientific Diagram](https://www.researchgate.net/publication/237199195/figure/fig3/AS:667636866220034@1536188441267/Pathways-of-activation-of-pepsinogen-to-pepsin-PG-pepsinogen-PG-pepsinogen.png)
Pathways of activation of pepsinogen to pepsin. PG, pepsinogen; PG*,... | Download Scientific Diagram
![Animals | Free Full-Text | Factors Influencing Proteolysis and Protein Utilization in the Intestine of Pigs: A Review Animals | Free Full-Text | Factors Influencing Proteolysis and Protein Utilization in the Intestine of Pigs: A Review](https://www.mdpi.com/animals/animals-11-03551/article_deploy/html/images/animals-11-03551-g001.png)
Animals | Free Full-Text | Factors Influencing Proteolysis and Protein Utilization in the Intestine of Pigs: A Review
Why understanding protein is critical for the growth, health and wellbeing of your animals | The Pig Site
![PDF) Conversion of pepsinogen to pepsin. Further evidence for intramolecular and pepsin catalyzed activation PDF) Conversion of pepsinogen to pepsin. Further evidence for intramolecular and pepsin catalyzed activation](https://i1.rgstatic.net/publication/22901026_Conversion_of_pepsinogen_to_pepsin_Further_evidence_for_intramolecular_and_pepsin_catalyzed_activation/links/554a71510cf29752ee7c19ef/largepreview.png)