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Mass Spectrometry-based Comparative Analysis of Membrane Protein: High-speed Centrifuge Method Versus Reagent-based Method
Korean J Clin Lab Sci 2019;51:78-85  
Published on March 31, 2019
Copyright © 2019 Korean Society for Clinical Laboratory Science.

Jiyeong Lee1, Ae Eun Seok1, Arum Park1, Sora Mun2, Hee-Gyoo Kang1,2

1Department of Biomedical Laboratory Science, Eulji University, Seongnam, Korea 2Department of Senior Healthcare, BK21 Plus Program, Graduate School, Eulji University, Seongnam, Korea
Correspondence to: Hee-Gyoo Kang
Department of Biomedical Laboratory Science, College of Health Sciences, Eulji University, 553 Sanseong-daero, Sujeong-gu, Seongnam 13135, Korea, Tel: 82-31-740-7315, E-mail: kanghg@eulji.ac.kr, ORCID: https://orcid.org/0000-0001-8690-2483
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Membrane proteins are involved in many common diseases, including heart disease and cancer. In various disease states, such as cancer, abnormal signaling pathways that are related to the membrane proteins cause the cells to divide out of control and the expression of membrane proteins can be altered. Membrane proteins have the hydrophobic environment of a lipid bilayer, which makes an analysis of the membrane proteins notoriously difficult. Therefore, this study evaluated the efficacy of two different methods for optimal membrane protein extraction. High-speed centrifuge and reagent-based method with a -/+ filter aided sample preparation (FASP) were compared. As a result, the high-speed centrifuge method is quite effective in analyzing the mitochondrial inner membranes, while the reagent-based method is useful for endoplasmic reticulum membrane analysis. In addition, the function of the membrane proteins extracted from the two methods were analyzed using GeneGo software. GO processes showed that the endoplasmic reticulum-related responses had higher significance in the reagent-based method. An analysis of the process networks showed that one cluster in the high-speed centrifuge method and four clusters in the reagent-based method were visualized. In conclusion, the two methods are useful for the analysis of different subcellular membrane proteins, and are expected to assist in selecting the membrane protein extraction method by considering the target subcellular membrane proteins for study.
Keywords : High-speed centrifuge method, Membrane protein, Membrane protein extraction, Reagent-based method

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