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CAS No.: 9001-75-6

Pepsin is an endopeptidase that breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine ^[1].

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描述Pepsin is an endopeptidase that breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine ^[1]. Pepsin is stable at pH ranges as high as pH 6. Above this pH, pepsin is rapidly irreversibly inactivated and elevation of pH of the reaction mixture to pH 8 results in complete inactivation of pepsin^[2]. Pepsin has been posited to be a reliable biological marker of EER. An immunologic pepsin assay of combined sputum and saliva was determined to be 100% sensitive and 89% specific for detection of EER (based on pH-metry), and an enzymatic test of nasal lavage fluid (100% sensitivity and 92.5% specificity) demonstrated an increased incidence of EER in patients with chronic rhinosinusitis ^[3]. Cultured hypopharyngeal epithelial (FaDu) cells were exposed to human pepsin (0.1 mg/mL) at pH 7.4 for either 1 hour or 12 hours at 37°C and both mitochondria and Golgi complexes were clearly damaged. This finding reveals a novel mechanism by which pepsin could cause cell damage, potentially even in nonacidic refluxate^[4].
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CAS号	9001-75-6	储存条件	粉末 Keep in dark place,Sealed in dry,2-8°C 液体 -20°C:3-6 月 -80°C:12月
分子式		运输	蓝冰
分子量	N/A	别名

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