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Literature summary for 3.4.22.1 extracted from

  • Takahashi, S.; Murakami, K.; Miyake, Y.
    Purification and characterization or porcine kidney cathepsin B (1981), J. Biochem., 90, 1677-1684.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
1-tosylamide-2-phenylethyl chloromethylketone
-
Sus scrofa
antipain
-
Sus scrofa
iodoacetamide
-
Sus scrofa
iodoacetic acid
-
Sus scrofa
leupeptin Ki: 0.15-0.17 nM Sus scrofa
N-ethylmaleimide
-
Sus scrofa
N-tosyl-lysyl chloromethylketone
-
Sus scrofa
phenylmethanesulfonyl fluoride no inhibition at 0.5 mM Sus scrofa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.204 0.225 benzyloxycarbonyl-Phe-Arg-4-methylcoumaryl-7-amide
-
Sus scrofa

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
24000 31000 isoenzyme I, gel filtration, SDS-PAGE Sus scrofa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
Proteins + H2O Sus scrofa turnover of intracellular proteins ?
-
?

Organism

Organism UniProt Comment Textmining
Sus scrofa
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Sus scrofa

Source Tissue

Source Tissue Comment Organism Textmining
kidney
-
Sus scrofa
-

Storage Stability

Storage Stability Organism
-20°C, 4 months, stable Sus scrofa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
benzyloxycarbonyl-Phe-Arg-4-methylcoumarin-7-amide
-
Sus scrofa benzyloxycarbonyl-Phe-Arg + 7-amino-4-methylcoumarin
-
?
Proteins + H2O turnover of intracellular proteins Sus scrofa ?
-
?

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
63 71 benzyloxycarbonyl-Phe-Arg-4-methylcoumaryl-7-amide
-
Sus scrofa

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Sus scrofa

pH Stability

pH Stability pH Stability Maximum Comment Organism
4 6.7 stable Sus scrofa

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.000015 0.000017 leupeptin
-
Sus scrofa