Proteomic differences in methicillin-sensitive and methicillin-resistant Staphylococcus aureus

Description of Data

To establish general differences between the protein expression in S. aureus strains, five methicillin sensitive S. aureus (MSSA) strains and five methicillin resistant S. aureus (MRSA) strains were compared both individually and as MSSA and MRSA groups in the absence of antibiotics. Proteins were compared by ultra-performance liquid chromatography-mass spectrometry.

Date made available	22 Oct 2024
Publisher	Pride ProteomeXchange
Date of data production	22 Oct 2024
Geographical coverage	Australia, Germany, Vietnam, USA, New Zealand

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Poonam Mudgil

DOI
10.6019/PXD021629

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Description: To establish general differences between the protein expression in S. aureus strains, five methicillin sensitive S. aureus (MSSA) strains and five methicillin resistant S. aureus (MRSA) strains were compared both individually and as MSSA and MRSA groups in the absence of antibiotics. Proteins were compared by ultra-performance liquid chromatography-mass spectrometry. Sample Processing Protocol: A whole protein extract was obtained from each strain using a modified Bligh and Dyer method. This protein extract was then digested using trypsin and the the Waters RapidGest SF Surfactant Procedure. The digested protein sample was then analyzed by UPLC-MS using a Waters nanoAcquity UPLC sample manager fitted with a binary solvent manager. Mass spectrometric detection was conducted using a Waters Synapt G2-Si. Data Processing Protocol: Proteins were identified using Progenesis QIP and the Uniprot S. aureus database. The following search conditions were used. The allowed maximum missed cleavages = 1, the allowed false discovery rate = 4% and the maximum protein size was set to 250 kDa. Peptide modifications were set to variable and included carbamidomethyl C, deamidation N, deamidation Q, oxidation M and propionamide C. The ion matching requirements were fragments/peptide of 1 or more, fragments/protein of 3 or more and peptides/protein of 1 or more.
To establish general differences between the protein expression in S. aureus strains, five methicillin sensitive S. aureus (MSSA) strains and five methicillin resistant S. aureus (MRSA) strains were compared both individually and as MSSA and MRSA groups in the absence of antibiotics. Proteins were compared by ultra-performance liquid chromatography-mass spectrometry. Sample Processing Protocol A whole protein extract was obtained from each strain using a modified Bligh and Dyer method. This protein extract was then digested using trypsin and the the Waters RapidGest SF Surfactant Procedure. The digested protein sample was then analyzed by UPLC-MS using a Waters nanoAcquity UPLC sample manager fitted with a binary solvent manager. Mass spectrometric detection was conducted using a Waters Synapt G2-Si. Data Processing Protocol Proteins were identified using Progenesis QIP and the Uniprot S. aureus database. The following search conditions were used. The allowed maximum missed cleavages = 1, the allowed false discovery rate = 4% and the maximum protein size was set to 250 kDa. Peptide modifications were set to variable and included carbamidomethyl C, deamidation N, deamidation Q, oxidation M and propionamide C. The ion matching requirements were fragments/peptide of 1 or more, fragments/protein of 3 or more and peptides/protein of 1 or more.
To establish general differences between the protein expression in S. aureus strains, five methicillin sensitive S. aureus (MSSA) strains and five methicillin resistant S. aureus (MRSA) strains were compared both individually and as MSSA and MRSA groups in the absence of antibiotics. Proteins were compared by ultra-performance liquid chromatography-mass spectrometry.

1 Article

Untargeted proteomic differences between clinical strains of methicillin-sensitive and methicillin-resistant Staphylococcus aureus
Nikolic, P., Mudgil, P., Harman, D. G. & Whitehall, J., Jun 2023, In: Microbial Pathogenesis. 179, 7 p., 106121.
Research output: Contribution to journal › Article › peer-review
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Proteomic differences in methicillin-sensitive and methicillin-resistant Staphylococcus aureus

Description of Data

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DOI

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Research output

Untargeted proteomic differences between clinical strains of methicillin-sensitive and methicillin-resistant Staphylococcus aureus

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