Gurnett AM, Ward J, Raper J, Turner MJ. Purification and characterisation of membrane-form variant surface glycoproteins of Trypanosoma brucei.
Mol Biochem Parasitol 1986;
20:1-13. [PMID:
3016534 DOI:
10.1016/0166-6851(86)90137-4]
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Abstract
Membrane-form variant surface glycoprotein of Trypanosoma brucei can be prepared in the presence of para-chloromercuriphenylsulphonic acid. The membrane-bound enzyme that usually cleaves a lipid from this glycoprotein, thus producing the soluble variant surface glycoprotein, is inhibited by a range of sulphydryl reagents. The effect of such inhibitors, both on cell lysates and on semi-purified enzyme, reveals that the enzyme may have a sulphydryl at or near its active site. Fatty acid analysis and isoelectric point measurements of membrane form and soluble form are presented.
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