A rapid four column purification of 2-deoxy-D-glucoside-2-sulphamate sulphohydrolase from human liver

Don Mahuran, Peter Clements, John Hopwood

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7 Citations (Scopus)

Abstract

2-Deoxy-D-glucoside-2-sulphamate sulphohydrolase was extracted from human liver and purified 40 000-fold by a simple four column procedure. The purification was followed using a specific substrate isolated from an acid hydrolysate of heparin, O-(α-2-sulphamino-2-deoxy-D-glucopyranosyl)-(1→3)-L-[6,3H]idonic acid. Only one form of the enzyme was seen on either ion exchange chromatography or isoelectric focussing, with a pI of 6.8. The apparent Mr of the haloenzyme as determined by gel filtration was 190 000 ± 20 000. Two other larger Mr protein peaks observed on gel filtration appear to be an inactive dimer of the 190 000 dalton peak and a larger aggregate near the exclusion limit of the column. On polyacrylamide disc gel electrophoresis in sodium dodecyl sulphate, with or without prior reduction, each protein peak from the gel filtration column electrophoreced as a single major band with an apparent Mr corresponding to 55 000 ± 6000.

Original languageEnglish
Pages (from-to)359-365
Number of pages7
JournalBBA - General Subjects
Volume757
Issue number3
DOIs
Publication statusPublished or Issued - 9 Jun 1983

Keywords

  • (Human liver)
  • Deoxyglucoside sulphamate sulphohydrolase
  • Lysosomal hydrolase
  • Sanfilippo syndrome

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology

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