Pepsin from porcine gastric mucosa

CAS Number:	9001-75-6
Enzyme Commission (EC) Number:	3.4.23.1 ( BRENDA | IUBMB )
EC Number:	232-629-3
MDL number:	MFCD00081840
eCl@ss:	42010127

Кат. номер

P7000-25G

P7000-100G

P7000-1KG

Pepsin is a peptidase used to digest proteins and is commonly used in the preparation of Fab fragments from antibodies. Pepsin, from porcine gastric mucosa, has been used to hydrolyze dry cervical samples in mice. Product P7000 is provided as a powder and has been used to treat epithelial cells from a single feline mammary carcinoma.
The enzyme from Sigma has been used to simulate in vitro gastric digestion of cooked cod. It has been used to simulate in vitro gastric digestion of cocoa mass and supplemented dietary fiber. It has also been used to increase the fraction of extractable soluble collagen and to lower the immunogenicity of the resulting collagen from bovine dermal tissue.
Pepsin cleavage can be used to produce F(ab)2 fragments of antibodies. 25, 100 g in poly bottle
1 kg in poly bottle
Biochem/physiol Actions
The enzyme does not cleave at valine, alanine, or glycine linkages. Z-L-tyrosyl-L-phenylalanine, Z-L-glutamyl-L-tyrosine, and Z-L-methionyl-L-tyrosine may be used as substrates for pepsin digestion. Pepsin is inhibited by several phenylalanine-containing peptides.
Pepsin hydrolyzes peptide bonds, not amide or ester linkages. Pepsin cleaves peptides with an aromatic acid on either side of the peptide bond. Sulfur-containing amino acids increase susceptibility to hydrolysis when they are close to the peptide bond. Pepsin preferentially cleaves at the carboxyl side of phenylalanine and leucine and at the carboxyl side of glutamic acid residues. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the chain of insulin
Pepsin is the major proteolytic enzyme produced in the stomach. It digests proteins through the cleavage of interior peptide linkages..
Preferential cleavage: hydrophobic and aromatic residues in P1 and P1′ postitions. Cleaves Phe-Val, Gln-His, Glu-Ala, Ala-Leu, Leu-Tyr, Tyr-Leu, Gly-Phe, Phe-Phe and Phe-Tyr bonds in the β chain of insulin
Unit Definition
One unit will produce a A280 of 0.001 per min at pH2.0 at 37 °C, measured as TCA-soluble products using hemoglobin as substrate. (Final volume = 16ml. Light path = 1cm.)
Analysis Note
Optimum pH is 2-4. Active in 4 M urea and 3 M guanidine HCl. Stable at 60 °C. Pepsin is irreversibly inactivated at pH 8.0 - 8.5.

form	powder
Quality Level	200
specific activity	250 units/mg solid
mol wt	35 kDa
Featured Industry	Diagnostic Assay Manufacturing
UniProt accession no.	P00791,
shipped in	wet ice
storage temp.	2-8°C
Gene Information	pig ... LOC396892(396892)

pictograms	GHS07,GHS08
signalword	Danger
hcodes	H315 - H319 - H334 - H335
pcodes	P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
Target Organs	Respiratory system
Personal Protective Equipment	dust mask type N95 (US),, Eyeshields,, Faceshields,, Gloves,
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point F	Not applicable
Flash Point C	Not applicable