کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2021180 1069234 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Expression and characterization of human glycosylated interleukin-1 receptor antagonist in Pichia pastoris
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Expression and characterization of human glycosylated interleukin-1 receptor antagonist in Pichia pastoris
چکیده انگلیسی
Interleukin-1 receptor antagonist is an inhibitor of the pro-inflammatory action of interleukin-1. The gene encoding for interleukin-1 receptor antagonist (IL-1ra) was cloned into a Pichia pastoris expression vector pPICzαA (Invitrogen, USA) and transformed into P. pastoris strain SMD1168H. Multi-copy selection of the gene produced a high expressing strain of IL-1ra that produced 17 mg/L of total secreted purified protein. The IL-1ra produced in P. pastoris was a mixture of glycosylated and non-glycosylated IL-1ra where 70% of the total protein was glycosylated. SP-Sepharose purification allowed for separation of the two expressed forms of IL-1ra, which permits biochemical investigation of glycosylated and non-glycosylated IL-1ra using one expression system. Mass spectrometric analysis revealed the expression of the full-length protein and that the glycosylated IL-1ra contained high mannose glycoforms that ranged from Man9GlcNAc2 to Man14GlcNAc2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protein Expression and Purification - Volume 59, Issue 1, May 2008, Pages 64-68
نویسندگان
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