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Literature summary extracted from

  • Okada, Y.; Yokota, Y.
    Purification and properties of cathepsin B from sea urchin eggs (1990), Comp. Biochem. Physiol. B, 96, 381-386.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.4.22.1 iodoacetic acid
-
Heliocidaris crassispina
3.4.22.1 iodoacetic acid
-
Hemicentrotus pulcherrimus
3.4.22.1 leupeptin
-
Heliocidaris crassispina
3.4.22.1 leupeptin
-
Hemicentrotus pulcherrimus
3.4.22.1 phenylmethanesulfonyl fluoride 27-33% inhibition at 0.5 mM Heliocidaris crassispina
3.4.22.1 phenylmethanesulfonyl fluoride 27-33% inhibition at 0.5 mM Hemicentrotus pulcherrimus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.4.22.1 0.006
-
benzyloxycarbonyl-Arg-Arg-4-methylcoumaryl-7-amide
-
Hemicentrotus pulcherrimus
3.4.22.1 0.032
-
benzyloxycarbonyl-Arg-Arg-4-methylcoumaryl-7-amide
-
Heliocidaris crassispina

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
3.4.22.1 yolk granule of sea urchin eggs, in lysosomal cytoplasmic organelles Hemicentrotus pulcherrimus 42718
-
3.4.22.1 yolk granule of sea urchin eggs, in lysosomal cytoplasmic organelles Heliocidaris crassispina 42718
-

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.4.22.1 22000
-
gel filtration Heliocidaris crassispina
3.4.22.1 29000
-
gel filtration Hemicentrotus pulcherrimus

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.4.22.1 Proteins + H2O Hemicentrotus pulcherrimus
-
?
-
?
3.4.22.1 Proteins + H2O Heliocidaris crassispina
-
?
-
?

Organism

EC Number Organism UniProt Comment Textmining
3.4.22.1 Heliocidaris crassispina
-
-
-
3.4.22.1 Hemicentrotus pulcherrimus
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.4.22.1
-
Hemicentrotus pulcherrimus
3.4.22.1
-
Heliocidaris crassispina

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.4.22.1 egg
-
Hemicentrotus pulcherrimus
-
3.4.22.1 egg
-
Heliocidaris crassispina
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.4.22.1 0.0667
-
benzyloxycarbonyl-Arg-Arg-4-methylcoumaryl-7-amide as substrate Heliocidaris crassispina

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.4.22.1 benzyloxycarbonyl-Arg-Arg-4-methylcoumarin 7-amide + H2O
-
Hemicentrotus pulcherrimus benzyloxycarbonyl-Arg-Arg + 7-amino-4-methylcoumarin
-
?
3.4.22.1 benzyloxycarbonyl-Arg-Arg-4-methylcoumarin 7-amide + H2O
-
Heliocidaris crassispina benzyloxycarbonyl-Arg-Arg + 7-amino-4-methylcoumarin
-
?
3.4.22.1 benzyloxycarbonyl-Phe-Arg-4-methylcoumarin-7-amide
-
Hemicentrotus pulcherrimus benzyloxycarbonyl-Phe-Arg + 7-amino-4-methylcoumarin
-
?
3.4.22.1 benzyloxycarbonyl-Phe-Arg-4-methylcoumarin-7-amide
-
Heliocidaris crassispina benzyloxycarbonyl-Phe-Arg + 7-amino-4-methylcoumarin
-
?
3.4.22.1 Proteins + H2O
-
Hemicentrotus pulcherrimus ?
-
?
3.4.22.1 Proteins + H2O
-
Heliocidaris crassispina ?
-
?

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.4.22.1 40
-
10% loss of activity within 10 min Heliocidaris crassispina
3.4.22.1 40
-
40% loss of activity within 10 min Hemicentrotus pulcherrimus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.4.22.1 5.3 5.5
-
Hemicentrotus pulcherrimus
3.4.22.1 5.5
-
-
Heliocidaris crassispina