A novel method for viral display of ER membrane proteins on budded baculovirus

被引：22

作者：

Urano, Y

Yamaguchi, M

Fukuda, R

Masuda, K

Takahashi, K

Uchiyama, Y

Iwanari, H

Jiang, SY

Naito, M

Kodama, T

Hamakubo, T

机构：

[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Dept Mol Biol, Tokyo 1538904, Japan

[2] Univ Tokyo, Adv Sci & Technol Res Ctr, Dept Med, Tokyo 1538904, Japan

[3] Pereus Proteom Inc, Bunkyo Ku, Tokyo 1120004, Japan

[4] Niigata Univ, Grad Sch Med & Dent Sci, Div Cellular & Mol Pathol, Dept Cellular Funct, Niigata 9518510, Japan

[5] Niigata Univ, Grad Sch Med & Dent Sci, Niigata 9518510, Japan

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 2003年 / 308卷 / 01期

关键词：

SREBP; SCAP; endoplasmic reticulum; Sf9; baculovirus; budded virus; monoclonal antibody;

D O I：

10.1016/S0006-291X(03)01355-X

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The baculovirus expression system has been used to express large quantities of various proteins, including membrane receptors. Here, we reveal a novel property of this expression system to be that certain membrane proteins can be displayed on the budded virus itself. We introduced the genes encoding sterol regulatory element-binding protein-2 (SREBP-2) or SREBP cleavage-activating protein (SCAP), important integral membrane proteins of the endoplasmic reticulum (ER) and/or the Golgi apparatus related to cellular cholesterol regulation, into a baculovirus vector. When insect cells were infected with SREBP-2 or SCAP recombinant viruses, it was found that these ER membrane proteins appeared on the budded baculovirus in addition to the host cell membrane fraction. Compared to proteins expressed on the cell membrane, membrane proteins displayed on virus exhibited both less aggregation and less degradation upon immunoblotting. Using this viral displayed SCAP as the screening antigen, we then generated a new monoclonal antibody specific against SCAP, which was useful for immunological localization studies. This system, which takes advantage of the viral display of membrane proteins, should prove to be a powerful additional tool for postgenomic protein analysis. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：191 / 196

页数：6

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