Recombinant Bacillus anthracis UPF0295 protein BAMEG_4067 (BAMEG_4067)

Introduction and Overview

Recombinant Bacillus anthracis UPF0295 protein BAMEG_4067 belongs to the UPF0295 protein family, where "UPF" designates an Uncharacterized Protein Family. This classification indicates that while the protein has been identified and sequenced, its precise biological functions remain to be fully elucidated. The protein originates from Bacillus anthracis, the gram-positive, spore-forming bacterium that causes anthrax, a serious infectious disease affecting both humans and animals .

The recombinant form of BAMEG_4067 has been produced to facilitate various research applications, providing scientists with a tool to investigate the structural and functional properties of this bacterial protein. As part of the ongoing research into B. anthracis, this protein represents a potential avenue for enhancing our understanding of bacterial physiology and pathogenesis.

Table 1: Basic Properties of BAMEG_4067

Production and Purification Methodologies

The recombinant BAMEG_4067 protein is produced through heterologous expression in Escherichia coli. The full-length protein (amino acids 1-118) is expressed with an N-terminal histidine tag, which facilitates efficient purification using affinity chromatography techniques .

The production process involves cloning the BAMEG_4067 gene into an appropriate expression vector, transforming E. coli with this construct, inducing protein expression, and subsequently purifying the target protein from bacterial lysates. Following expression and purification, the protein is typically supplied in a lyophilized powder form with a purity exceeding 90%, as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis .

Table 2: Production and Purification Details

Comparative Analysis with Other B. anthracis Proteins

While BAMEG_4067 is less studied than the major virulence factors of B. anthracis such as protective antigen (PA), lethal factor (LF), and edema factor (EF), understanding its potential role in bacterial physiology can provide valuable insights into anthrax pathogenesis.

Unlike the well-characterized toxin components that have defined roles in anthrax pathogenesis, BAMEG_4067 belongs to the UPF0295 family with uncertain function. The major toxin components of B. anthracis operate together to form the lethal toxin (PA+LF) and edema toxin (PA+EF), which target host cells through specific receptors like TEM8 and CMG2 .

The cellular localization of BAMEG_4067 can be inferred from its amino acid sequence, which suggests it may be a membrane-associated protein based on its hydrophobic regions . This contrasts with the secreted nature of the anthrax toxin components and is more reminiscent of surface layer proteins like EA1 and Sap that have structural roles in B. anthracis .

Research Applications and Potential Significance

While the specific biological function of BAMEG_4067 in Bacillus anthracis remains to be fully characterized, the recombinant protein has several important applications in research:

1. Structural Biology Studies: The purified protein can be used for crystallographic or NMR studies to determine its three-dimensional structure, which could provide insights into its function .

2. Protein-Protein Interaction Analysis: Identifying potential binding partners or complexes formed by BAMEG_4067 in bacterial cells could reveal its role in cellular processes .

3. Antibody Development: The recombinant protein can serve as an antigen for generating specific antibodies useful for detection and localization studies .

4. Functional Assays: Investigating any potential enzymatic activities or biochemical functions through in vitro assays could clarify the protein's role in bacterial physiology .

5. Immunological Research: The protein could be used to study host immune responses to B. anthracis components, potentially contributing to vaccine development research .

The recombinant BAMEG_4067 protein is commercially available for research purposes only and is not intended for human consumption or diagnostic applications .