Although MALDI-TOF mass spectrometric analysis has been applied to the characterization of yeast species important in winemaking, relatively few taxa have so far been examined, and the value of low mass peaks for identification has not, to our knowledge, been previously determined. We describe a modified (pre-mixing) procedure for extraction of low (m/z 500-4000) - and high (m/z 2000-20,000) mass range moieties detected by MALDI-TOF and compare it with a previously described, proposed standard method based on a dried-droplet approach. Thirty-three strains representing 21 yeast species were examined. We found our modified method consistently yielded more discriminatory peaks and a broader mass range detection than the proposed standard method for the species examined. Cluster analyses of MALDI-TOF profiles also indicated better separation between species when the pre-mixing method was used, especially where high mass features were used. The use of low mass features may be useful for strain-level discrimination.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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