Proteomic Analysis of Bacillus thuringiensis at Different Growth Phases by Using an Automated Online Two-Dimensional Liquid Chromatography-Tandem Mass Spectrometry Strategy

Author:

Huang Shaoya1,Ding Xuezhi1,Sun Yunjun1,Yang Qi1,Xiao Xiuqing1,Cao Zhenping1,Xia Liqiu1

Affiliation:

1. College of Life Science, Hunan Normal University, Hunan Provincial Key Laboratory of Microbial Molecular Biology-State Key Laboratory Breeding Base of Microbial Molecular Biology, Changsha, China

Abstract

ABSTRACT The proteome of a new Bacillus thuringiensis subsp. kurstaki strain, 4.0718, from the middle vegetative ( T 1 ), early sporulation ( T 2 ), and late sporulation ( T 3 ) phases was analyzed using an integrated liquid chromatography (LC)-based protein identification system. The system comprised two-dimensional (2D) LC coupled with nanoscale electrospray ionization (ESI) tandem mass spectrometry (MS/MS) on a high-resolution hybrid mass spectrometer with an automated data analysis system. After deletion of redundant proteins from the different batches and B. thuringiensis subspecies, 918, 703, and 778 proteins were identified in the respective three phases. Their molecular masses ranged from 4.6 Da to 477.4 Da, and their isoelectric points ranged from 4.01 to 11.84. Function clustering revealed that most of the proteins in the three phases were functional metabolic proteins, followed by proteins participating in cell processes. Small molecular and macromolecular metabolic proteins were further classified according to the Kyoto Encyclopedia of Genes and Genome and BioCyc metabolic pathway database. Three protoxins (Cry2Aa, Cry1Aa, and Cry1Ac) as well as a series of potential intracellular active factors were detected. Many significant proteins related to spore and crystal formation, including sporulation proteins, help proteins, chaperones, and so on, were identified. The expression patterns of two identified proteins, CotJc and glutamine synthetase, were validated by Western blot analysis, which further confirmed the MS results. This study is the first to use shotgun technology to research the proteome of B. thuringiensis . Valuable experimental data are provided regarding the methodology of analyzing the B. thuringiensis proteome (which can be used to produce insecticidal crystal proteins) and have been added to the related protein database.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference55 articles.

1. Microbial Metalloproteinases Mediate Sensing of Invading Pathogens and Activate Innate Immune Responses in the Lepidopteran Model Host Galleria mellonella

2. Sporulation and δ-endotoxin synthesis by Bacillus thuringiensis;Aronson A;Cell. Mol. Life Sci.,2002

3. γ-Aminobutyric Acid Pathway and Modified Tricarboxylic Acid Cycle Activity During Growth and Sporulation of Bacillus thuringiensis

4. Proteomic profiling of cellular stresses in Bacillus subtilis reveals cellular networks and assists in elucidating antibiotic mechanisms of action;Bandow JE;Prog. Drug Res.,2007

5. Bacillus thuringiensis natural and recombinant bioinsecticide products;Baum J;Methods Biotechnol.,1999

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