کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10749117 1050286 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mammalian farnesyltransferase α subunit regulates vacuolar protein sorting-associated protein 4A (Vps4A) - dependent intracellular trafficking through recycling endosomes
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Mammalian farnesyltransferase α subunit regulates vacuolar protein sorting-associated protein 4A (Vps4A) - dependent intracellular trafficking through recycling endosomes
چکیده انگلیسی
The protein farnesyltransferase (FTase) mediates posttranslational modification of proteins with isoprenoid lipids. FTase is a heterodimer and although the β subunit harbors the active site, it requires the α subunit for its activity. Here we explore the other functions of the FTase α subunit in addition to its established role in protein prenylation. We found that in the absence of the β subunit, the α subunit of FTase forms a stable autonomous dimeric structure in solution. We identify interactors of FTase α using mass spectrometry, followed by rapid in vitro analysis using the Leishmania tarentolae cell - free system. Vps4A was validated for direct binding to the FTase α subunit both in vitro and in vivo. Analysis of the interaction with Vps4A in Hek 293 cells demonstrated that FTase α controls trafficking of transferrin receptor upstream of this protein. These results point to the existence of previously undetected biological functions of the FTase α subunit that includes control of intracellular membrane trafficking.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 468, Issue 4, 25 December 2015, Pages 580-586
نویسندگان
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