The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2023
Filed:
Nov. 11, 2020
Shimadzu Corporation, Kyoto, JP;
Masaki Murase, Kyoto, JP;
Takashi Nishikaze, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A glycopeptide analyzer that performs a structural analysis on glycoforms of a glycoprotein, including: a spectrum creator creating an MS/MS spectrum for each elution time based on data acquired by an LC/MS analysis of a sample containing glycopeptides originating from a target glycoprotein; a peptide mass calculator selecting a glycopeptide-related spectrum from a plurality of MS/MS spectra and calculating the mass of a peptide from the selected spectrum; a similarity determiner determining a similarity between the glycopeptide-related spectrum and each of the other MS/MS spectra; an elution-time range estimator estimating an elution-time range based on a distribution of the frequency of occurrence of an MS/MS spectrum for which a high level of similarity has been determined on a time axis; and a glycan composition estimator selecting an ion peak corresponding to a mass equal to or greater than a peptide mass and estimating a glycan composition based on the peak.