Interactive analysis of mass spectrometry data
First Claim
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1. A non-transitory machine-readable medium that stores instructions, which, when performed by a machine, cause the machine to perform operations comprising:
- receiving a data file comprising mass spectrometry (MS) data for a sample comprising a reference molecule and one or more variant molecules, wherein each variant molecule has a chemical modification relative to the reference molecule;
providing an assembly of molecular identifications, wherein each molecular identification correlates a spectral representation with the reference molecule and a modification state for a variant molecule relative to the reference molecule;
selecting a molecular identification based on user-input; and
simultaneously and interactively displaying a first arrangement of a plurality of spectral representations, wherein a first spectral representation of the first arrangement is correlated to the selected molecular identification and a second spectral representation of the first arrangement is correlated to a first molecular identification having the same reference molecule but different modification state;
wherein a user selection or modification in the first spectral representation is automatically made in the second spectral representation and a user selection or modification in the second spectral representation is automatically made in the first spectral representation.
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Abstract
This invention relates to graphical user-interactive displays for use in MS-based analysis of protein impurities, as well as methods and software for generating and using such. One aspect provides a user-interactive display comprising an extracted mass chromatogram (XIC), an MS1 spectrum and an MS2 spectrum, all simultaneously representing a user-selected peptide. Another aspect provides a user interactive display simultaneously presenting paired spectra (XIC, MS1 and/or MS2) for a variant peptide and its corresponding wildtype counterpart.
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Citations
18 Claims
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1. A non-transitory machine-readable medium that stores instructions, which, when performed by a machine, cause the machine to perform operations comprising:
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receiving a data file comprising mass spectrometry (MS) data for a sample comprising a reference molecule and one or more variant molecules, wherein each variant molecule has a chemical modification relative to the reference molecule; providing an assembly of molecular identifications, wherein each molecular identification correlates a spectral representation with the reference molecule and a modification state for a variant molecule relative to the reference molecule; selecting a molecular identification based on user-input; and simultaneously and interactively displaying a first arrangement of a plurality of spectral representations, wherein a first spectral representation of the first arrangement is correlated to the selected molecular identification and a second spectral representation of the first arrangement is correlated to a first molecular identification having the same reference molecule but different modification state; wherein a user selection or modification in the first spectral representation is automatically made in the second spectral representation and a user selection or modification in the second spectral representation is automatically made in the first spectral representation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for displaying mass spectrometry data comprising:
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receiving a data file comprising mass spectrometry (MS) data for a sample comprising a reference molecule and one or more variant molecules, wherein each variant molecule has a chemical modification relative to the reference molecule; providing an assembly of molecular identifications, wherein each molecular identification correlates a spectral representation with the reference molecule and a modification state for a variant molecule relative to the reference molecule; selecting a molecular identification based on user-input; and simultaneously and interactively displaying a first arrangement of a plurality of spectral representations, wherein a first spectral representation of the first arrangement is correlated to the selected molecular identification and a second spectral representation of the first arrangement is correlated to a first molecular identification having the same reference molecule but different modification state; wherein a user selection or modification in the first spectral representation is automatically made in the second spectral representation and a user selection or modification in the second spectral representation is automatically made in the first spectral representation.
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Specification