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A new method for the isolation of aminoacylase from mammalian kidneys.

Abstract: Aminoacylase (E.C. 3.5.1.14) was isolated from the kidneys of different mammalian species (horse, cattle, rabbit and pig) by extracting the organ with water and subjecting the extract to heat treatment at 70 degrees C for 10 min, then, after having removed denatured proteins by fractionating those remaining in the solution by ammonium sulfate. The enzyme obtained in this way can either be used directly for practical purposes (e.g. preparation of immobilized aminoacylase) or further purified by chromatography. For the further purification of porcine kidney aminoacylase we applied a combination of ion exchange chromatography and gel filtration.
Publication Date: 1980-01-01 PubMed ID: 7282295
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  • Journal Article

Summary

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The research explores a novel approach to isolate the enzyme aminoacylase from mammalian kidneys. The authors extracted the enzyme from different mammalian species and further purified it, demonstrating that it can be used for practical purposes.

Methodology

The researchers developed a method to isolate the enzyme aminoacylase. This involves:

  • Extracting the enzyme from the kidneys of different mammalian species, namely horses, cattle, rabbits, and pigs.
  • The extraction process involves treating the kidney with water and thereafter, subjecting the extract to heat treatment at 70 degrees Celcius for 10 minutes.

Protein Fractionation Process

After heating, the denatured or non-functional proteins are removed. This is followed by:

  • Fractionating the remaining proteins in the solution by using ammonium sulfate, a common method for protein purification.
  • The end result of this process is the isolated aminoacylase enzyme.

Practical Application and Further Purification

The isolated enzyme has potential practical applications and can be used directly for these. One such application mentioned in the study is for the preparation of immobilized aminoacylase. However, for further purification, the study describes a combination of ion exchange chromatography and gel filtration, particularly for the purification of aminoacylase from porcine (pig) kidneys.

Significance

This study provides a new methodology for the isolation of the aminoacylase enzyme from mammalian kidneys. The innovative part of the research lies in the method to isolate and purify this enzyme, which can potentially expedite research and practical applications that rely on this particular enzyme. The research also opens avenues for further exploration in enzyme isolation techniques from mammalian organs.

Cite This Article

APA
Szajáni B. (1980). A new method for the isolation of aminoacylase from mammalian kidneys. Acta Biochim Biophys Acad Sci Hung, 15(4), 287-293.

Publication

NlmUniqueID: 0067725
Country: Hungary
Language: English
Volume: 15
Issue: 4
Pages: 287-293

Researcher Affiliations

Szajáni, B

    MeSH Terms

    • Amidohydrolases / isolation & purification
    • Ammonium Sulfate
    • Animals
    • Cattle
    • Chromatography, Gel
    • Chromatography, Ion Exchange
    • Horses
    • Hot Temperature
    • Kidney / enzymology
    • Protein Denaturation
    • Rabbits
    • Swine

    Citations

    This article has been cited 2 times.
    1. Miller YE, Minna JD, Gazdar AF. Lack of expression of aminoacylase-1 in small cell lung cancer. Evidence for inactivation of genes encoded by chromosome 3p. J Clin Invest 1989 Jun;83(6):2120-4.
      doi: 10.1172/JCI114125pubmed: 2542383google scholar: lookup
    2. Szajáni B, Südi P, Klamár G, Jászay ZM, Petneházy I, Töke L. Effects of carbodiimide structure on the immobilization of enzymes. Appl Biochem Biotechnol 1991 Aug;30(2):225-31.
      doi: 10.1007/BF02921689pubmed: 1952934google scholar: lookup