Evidence of myristylated disulfide-linked dimer of variant surface glycoprotein of Trypanosoma brucei-brucei |
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Authors: | M Hublart L Mendon?a-Previato F Boutignon G Huet-Duvillier P Degand |
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Institution: | Unité INSERM No. 16, Lille, France. |
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Abstract: | 1. Variant surface glycoprotein (VSGs) of Trypanosoma brucei-brucei may exist as a disulfide-linked dimer in both forms: myristylated (mfVSG) and non-myristylated (sVSG), as judge by fluorography and immunoblotting of SDS-PAGE under non-reducing conditions. 2. The dimeric VSG form is labeled with 3H]-myristic acid in our incorporation conditions. 3. AnTat 1.1 trypanosomes preincubated with tunicamycin and incubated with 3H]-myristic acid synthesized a labeled molecule that has an apparent molecular weight slightly smaller than the native form, and that also corresponds to a disulfide-linked dimer. |
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