3.4.23.2: pepsin B

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For detailed information about pepsin B, go to the full flat file.

Reaction

degradation of gelatin; little activity on hemoglobin. Specificity on B chain of insulin additional information restricted than that of pepsin A; does not cleave at Phe1-Val, Gln4-His or Gly23-Phe =

Synonyms

EC 3.4.4.2, gelatinase, More, parapepsin I, pepsin, Pepsina Suina TS

ECTree

     3 Hydrolases

         3.4 Acting on peptide bonds (peptidases)

             3.4.23 Aspartic endopeptidases

                3.4.23.2 pepsin B

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Results	in table
3	Activating Compound
7	AA Sequence
1	Application
1	CAS Registry Number
1	Cloned(Commentary)
2	General Stability
5	Inhibitors
14	KM Value [mM]
4	Metals/Ions
7	Molecular Weight [Da]
8	Natural Substrates/ Products (Substrates)
12	Organism
4	pH Optimum
4	pH Range
5	pH Stability
6	Posttranslational Modification
7	Protein Variants
5	Purification (Commentary)
2	Reaction
1	Reaction Type
12	Reference
10	Source Tissue
4	Specific Activity [micromol/min/mg]
50	Substrates and Products (Substrate)
6	Subunits
7	Synonyms
3	Temperature Optimum [°C]
2	Temperature Range [°C]
4	Temperature Stability [°C]
14	Turnover Number [1/s]

pH Stability

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pH Stability on EC 3.4.23.2 - pepsin B

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pH STABILITY

ORGANISM

UNIPROT

COMMENTARY

LITERATURE

4 - 6.9

Sus scrofa

-

room temperature, pepsin is stable

668808

6

Albatrossia pectoralis

-

room temperature, 30 min, stable below

679335

6.2

Boreogadus saida

-

30°C, unstable

95816

7

Albatrossia pectoralis

-

room temperature, 30 min, about 20% loss of activity

679335

8

Albatrossia pectoralis

-

room temperature, 30 min, about 75% loss of activity

679335