The purification and characterization of human kidney l-arginine: Glycine amidinotransferase

Myron D. Gross, Mark A. Eggen, Alex Simon, John F. Van Pilsum

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Human kidney l-arginine:glycine amidinotransferase (transamidinase) has been purified to a homogeneous state as defined by native and sodium dodecyl sulfate gel electrophoresis and by ultracentrifugation (sedimentation equilibrium) experiments. The four steps in the isolation procedure were chromatography with DEAE-cellulose, gel filtration with Sephadex G-150, chromatography with phenyl Sepharose, and high-pressure liquid chromatography with hydroxylapatite. The final product represented a 90-fold purification of the enzyme. Human kidney transamidinase is a dimer with a molecular mass of 89,000 Da and subunit masses of 44,000 Da. The Km for arginine and glycine were both 2.5 mm and the Vmax was 0.5 μmol ornithine/min/mg protein. The ultraviolet absorption spectrum, specific activity, and isoelectric points were determined for human kidney transamidinase. Multiple forms of the enzyme were obtained by isoelectric focusing. Human kidney transamidinase cross-reacted with polyclonal antibodies raised to rat kidney transamidinase. All of the properties of human kidney transamidinase that we have examined were similar to those of rat kidney transamidinase. A close evolutionary relationship between the rat and human kidney transamidinase is suggested.

Original languageEnglish (US)
Pages (from-to)747-755
Number of pages9
JournalArchives of Biochemistry and Biophysics
Volume251
Issue number2
DOIs
StatePublished - 1986
Externally publishedYes

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Amidinotransferases
Purification
Kidney
Rats
Chromatography
Gels
High pressure liquid chromatography
DEAE-Cellulose Chromatography
DEAE-Cellulose
Ornithine
glycine amidinotransferase
Ultracentrifugation
Isoelectric Point
Isoelectric Focusing
Molecular mass
Enzymes
Durapatite
Electrophoresis
Sedimentation
Sodium Dodecyl Sulfate

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

The purification and characterization of human kidney l-arginine : Glycine amidinotransferase. / Gross, Myron D.; Eggen, Mark A.; Simon, Alex; Van Pilsum, John F.

In: Archives of Biochemistry and Biophysics, Vol. 251, No. 2, 1986, p. 747-755.

Research output: Contribution to journalArticle

Gross, Myron D. ; Eggen, Mark A. ; Simon, Alex ; Van Pilsum, John F. / The purification and characterization of human kidney l-arginine : Glycine amidinotransferase. In: Archives of Biochemistry and Biophysics. 1986 ; Vol. 251, No. 2. pp. 747-755.
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