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. 11, 2019
Filed:
Dec. 27, 2017
Shimadzu Corporation, Kyoto-shi, Kyoto, JP;
Sadanori Sekiya, Kusatsu, JP;
Hidenori Takahashi, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
In a mass spectrum of fragment ions obtained by dissociating peptide-derived ions using the technique of irradiating the ions with hydrogen radicals, either pairs of a-type and c-type ions or those of z-type and z-type ions are characteristically observed. Since the mass difference of those ion pairs is previously known, a pair peak searchersearches for pair peaks having a predetermined mass difference in a mass spectrum created by a mass spectrum creator, and adds to the detected pair peaks a piece of information indicating that they are pairs of a-type and c-type ions or those of x-type and z-type ions. When estimating the amino acid sequence of the peptide by a database search, a protein identifieruses the ion-pair information in addition to the m/z value of each peak, whereby the accuracy of the estimation or identification the amino acid sequence can be improved.