The ORFeome of Staphylococcus aureus v 1.1

Area of Science:

• Microbiology
• Genomics
• Systems Biology

Background:

• Staphylococcus aureus is a major cause of human illness and death.
• Antibiotic resistance, particularly Methicillin-resistant S. aureus (MRSA), complicates treatment.
• Omics approaches require a complete set of protein-encoding open reading frames (ORFs) for S. aureus.

Purpose of the Study:

• To construct the first ORFeome library for Staphylococcus aureus.
• To facilitate systems biology research on this pathogen.

Main Methods:

• Genome sequencing of S. aureus strain Mu50 to identify ORFs.
• Design of PCR primers based on genome sequence.
• Construction of an ORFeome library using Gateway cloning technology from a clinical isolate.
• Verification of library quality via DNA sequencing and PCR amplification.
• Demonstration of library functionality through protein expression and yeast 2-hybrid assays.

Main Results:

• The S. aureus ORFeome library contains 2562 unique Gateway entry clones, representing 95% ORF coverage.
• Library quality was confirmed through rigorous DNA sequencing and PCR.
• Functional validation included recombinant protein expression and yeast 2-hybrid screening for protein interactions.

Conclusions:

• The developed S. aureus ORFeome library is a novel and crucial resource.
• This library will advance the systems biology investigation of S. aureus.
• It is a key tool for understanding and combating infections caused by this pathogen.