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Literature summary for 3.1.1.13 extracted from

  • van Berkel, T.J.C.; Vaandrager H.; Kruijt, J.K.; Koster, J.F.
    Characteristics of acid lipase and acid cholesteryl esterase activity in parenchymal and non-parenchymal rat liver cells (1980), Biochim. Biophys. Acta, 617, 446-457.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
EDTA slight activation Rattus sp.

Inhibitors

Inhibitors Comment Organism Structure
ammonium chloride slightly inhibitory Rattus sp.
Ca2+ 18% inhibition at 1 mM Rattus sp.
iodoacetate 100% inhibition at 50 mM Rattus sp.
Mg2+ 11% inhibition at 1 mM Rattus sp.
NaCl 44% inhibition at 0.5 M Rattus sp.
NaF 54% inhibition at 1 mM Rattus sp.
p-chloromercuribenzoate 84% inhibition at 0.25 mM Rattus sp.
Protamine sulfate 55% inhibition at 0.36 M Rattus sp.
Triton X-100 20% inactivation at 20 mM Rattus sp.

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.011
-
cholesteryl oleate non-parenchymal cells Rattus sp.
0.029
-
cholesteryl oleate parenchymal cells Rattus sp.

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
cholesteryl esters + H2O Rattus sp.
-
cholesterol + fatty acid
-
?

Organism

Organism UniProt Comment Textmining
Rattus sp.
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
mammary gland
-
Rattus sp.
-
parenchyma
-
Rattus sp.
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.004
-
in parenchymal cells Rattus sp.
0.007
-
whole liver homogenate Rattus sp.
0.05
-
in non-parenchymal cells Rattus sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
cholesteryl esters + H2O
-
Rattus sp. cholesterol + fatty acid
-
?
cholesteryl oleate + H2O
-
Rattus sp. cholesterol + oleic acid
-
?

Synonyms

Synonyms Comment Organism
acid cholesteryl esterase
-
Rattus sp.

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3.5
-
non-parenchymal cells Rattus sp.
4
-
parenchymal cells Rattus sp.