3.4.23.2: pepsin B
This is an abbreviated version!
For detailed information about pepsin B, go to the full flat file.
Word Map on EC 3.4.23.2
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3.4.23.2
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pepsinogen
-
zymogen
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chymosin
-
proteinases
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progastricsin
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gelatin
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prosegment
-
prochymosin
-
juice
-
gelatinase
-
gastricsin
-
calf
-
mucosa
-
immunoelectrophoresis
-
food industry
- 3.4.23.2
- pepsinogen
- zymogen
- chymosin
- proteinases
- progastricsin
- gelatin
- prosegment
- prochymosin
- juice
- gelatinase
- gastricsin
-
calf
- mucosa
-
immunoelectrophoresis
- food industry
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
3.4.23.2 pepsin BAdvanced search results
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Substrates Products on EC 3.4.23.2 - pepsin B
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SUBSTRATE 
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
acetyl-Phe-L-diiodotyrosine + H2O
acetyl-L-phenylalanine + L-diiodotyrosine
-
-
-
ir
FVNQHLCGSHLVEALYLVCGERGFFYTPKA + H2O
FVNQHLCGSHL + VEA + Leu + Tyr + LVCGERGF + Phe + YTPKA
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oxidized insulin B chain, cleavage site specificity determination
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-
?
Proteins + H2O
?
-
enzyme formed from pepsinogen B, more restricted specificity than pepsin A
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-
?
Proteins + H2O
?
-
enzyme formed from pepsinogen B, more restricted specificity than pepsin A
-
-
?
Proteins + H2O
?
-
enzyme formed from pepsinogen B, more restricted specificity than pepsin A
-
-
?
proteins + H2O
acetyl-L-phenylalanyl-L-diiodotyrosine + H2O
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more restricted specificity than pepsin A
-
ir
proteins + H2O
acetyl-L-phenylalanyl-L-diiodotyrosine + H2O
-
more restricted specificity than pepsin A
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ir
proteins + H2O
acetyl-L-phenylalanyl-L-diiodotyrosine + H2O
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little activity with hemoglobin
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ir
additional information
?
-
-
the enzyme shows generally low proteolytic activity
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-
?
additional information
?
-
-
the enzyme has milk-clotting activity. Its unspecific proteolytic activity hydrolyses bonds with Phe, Tyr, Leu or Val residues favouring the formation of undesirable peptides
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-
?
