Dataset Information

Metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) Species, Positive Ionization Polarity

ABSTRACT: Paper title: Insights into the antimicrobial activities and metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) species from the rare marine biosphere Author List: Silva, SG, Paula, P, da Silva, J.P, Mil-Homens, D, Teixeira, MC, Fialho, A, Costa, R, Keller-Costa, T PubMedID: Brief description of the data submitted: RAW Files and .mzXML Files used to generate Figures 4 and 5. Sample Collection Method: Supernatants of 120 mL of Aquimarina spp. cultures grown in 1:2 diluted Marine Broth at 24 degrees Celsius in an incubator (Labtron) with 120 rpm orbital shaking for two days. Sample Extraction Method: Liquid extracts; Solid phase extraction (HLB cartridges); Elution with methanol (100%); Eluates were evaporated in a gentle flux of nitrogen gas and reconstituted in 500 microlitres of methanol-water (50:50 v/v). Ionization Souce and Polarity: Heated Electro-Spray Ionization source (HESI-II; Thermo Scientific). Positive Ionization Polarity. Chromatography and Phase: Thermo Scientific Accucore RP-18 column (2.1 times 100 mm, 2.6 microm), Water-Acetonitrile gradient with 0.1% formic acid.

INSTRUMENT(S): LTQ Orbitrap Elite

ORGANISM(S): Aquimarina (ncbitaxon:290174)

SUBMITTER: Tina Keller-Costa

PROVIDER: MSV000089550 | MassIVE | Thu May 26 08:15:00 BST 2022

REPOSITORIES: MassIVE

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Insights into the Antimicrobial Activities and Metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) Species from the Rare Marine Biosphere.

Silva Sandra Godinho SG Paula Patrícia P da Silva José Paulo JP Mil-Homens Dalila D Teixeira Miguel Cacho MC Fialho Arsénio Mendes AM Costa Rodrigo R Keller-Costa Tina T

Marine drugs 20220628 7

Two novel natural products, the polyketide cuniculene and the peptide antibiotic aquimarin, were recently discovered from the marine bacterial genus Aquimarina. However, the diversity of the secondary metabolite biosynthetic gene clusters (SM-BGCs) in Aquimarina genomes indicates a far greater biosynthetic potential. In this study, nine representative Aquimarina strains were tested for antimicrobial activity against diverse human-pathogenic and marine microorganisms and subjected to metabolomic ...[more]

PMID: 35877716

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Project description:Cells were treated with DMSO (biological triplicate) or degrader at indicated dose and time (Meta Treatment Table) and cells were harvested by centrifugation. Lysis buffer (8 M Urea, 50 mM NaCl, 50 mM 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (EPPS) pH 8.5, Protease and Phosphatase inhibitors from Roche) was added to the cell pellets and homogenized by 20 passes through a 21 gauge (1.25 in. long) needle to achieve a cell lysate with a protein concentration between 1 - 4 mg/mL. A micro-BCA assay (Pierce) was used to determine the final protein concentration in the cell lysate. 200 µg of protein for each sample were reduced and alkylated as previously described1. Proteins were precipitated using methanol/chloroform. In brief, four volumes of methanol were added to the cell lysate, followed by one volume of chloroform, and finally three volumes of water. The mixture was vortexed and centrifuged to separate the chloroform phase from the aqueous phase. The precipitated protein was washed with three volumes of methanol, centrifuged and the resulting washed precipitated protein was allowed to air dry. Precipitated protein was resuspended in 4 M Urea, 50 mM HEPES pH 7.4, followed by dilution to 1 M urea with the addition of 200 mM EPPS, pH 8. Proteins were first digested with LysC (1:50; enzyme:protein) for 12 hours at room temperature. The LysC digestion was diluted to 0.5 M Urea with 200 mM EPPS pH 8 followed by digestion with trypsin (1:50; enzyme:protein) for 6 hours at 37 °C. Tandem mass tag (TMT) reagents (Thermo Fisher Scientific) were dissolved in anhydrous acetonitrile (ACN) according to manufacturer’s instructions. Anhydrous ACN was added to each peptide sample to a final concentration of 30% v/v, and labeling was induced with the addition of TMT reagent to each sample at a ratio of 1:4 peptide:TMT label. The 11 or 16-plex labeling reactions were performed for 1.5 hours at room temperature and the reaction quenched by the addition of hydroxylamine to a final concentration of 0.3% for 15 minutes at room temperature. Each of the sample channels were combined in a 1:1 ratio, desalted using C18 solid phase extraction cartridges (Waters) and analyzed by LC-MS for channel ratio comparison. Samples were then combined using the adjusted volumes determined in the channel ratio analysis and dried down in a speed vacuum. The combined sample was then resuspended in 1% formic acid and acidified (pH 2 - 3) before being subjected to desalting with C18 SPE (Sep-Pak, Waters). Samples were then offline fractionated into 96 fractions by high pH reverse-phase HPLC (Agilent LC1260) through an aeris peptide xb-c18 column (phenomenex) with mobile phase A containing 5% acetonitrile and 10 mM NH4HCO3 in LC-MS grade H2O, and mobile phase B containing 90% acetonitrile and 10 mM NH4HCO3 in LC-MS grade H2O (both pH 8.0). The 96 resulting fractions were then pooled in a non-continuous manner into 24 fractions and these fractions were used for subsequent mass spectrometry analysis. Data were collected using an Orbitrap Fusion Lumos mass spectrometer (Thermo Fisher Scientific, San Jose, CA, USA) coupled with a Proxeon EASY-nLC 1200 LC pump (Thermo Fisher Scientific) or an Orbitrap Eclipse Tribrid mass spectrometer (Thermo Fisher Scientific, San Jose, CA, USA) coupled with an UltiMate 3000 RSLCnano System. Peptides were separated on an EasySpray ES803a/ES803a.rev2 75 μm inner diameter microcapillary column (Thermo Fisher Scientific) or a 100 µm inner diameter microcapillary column packed with ~ 50 cm of Accucore C18 resin (2.6 µM, 100 Å, Thermo Fisher Scientific). Peptides were separated using a 190 min gradient of 6 - 27% acetonitrile in 1.0% formic acid with a flow rate of 300 or 350 nL/min. Each analysis used an MS3-based TMT method as described previously. The data were acquired using a mass range of m/z 340 – 1350, resolution 120,000, AGC target 5 x 105, maximum injection time 100 ms, dynamic exclusion of 120 seconds for the peptide measurements in the Orbitrap. Data dependent MS2 spectra were acquired in the ion trap with a normalized collision energy (NCE) set at 35%, AGC target set to 1.8 x 104 and a maximum injection time of 120 ms. MS3 scans were acquired in the Orbitrap with a HCD collision energy set to 55%, AGC target set to 2 x 105, maximum injection time of 150 ms, resolution at 50,000 and with a maximum synchronous precursor selection (SPS) precursors set to 10.

Dataset Information

Metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) Species, Positive Ionization Polarity

Publications

Insights into the Antimicrobial Activities and Metabolomes of <i>Aquimarina</i> (<i>Flavobacteriaceae</i>, <i>Bacteroidetes</i>) Species from the Rare Marine Biosphere.

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