Canon Kabushiki Kaisha

Jumpei Naito

Manabu Komatsu

Hiroyuki Hashimoto

Masafumi Kyogaku

Kota Iwasaki

Yoichi Otsuka

Shuya Satoh

The problem to be solved by the present invention is to provide a method for treating a polypeptide including a cysteine residue for enhancing the sensitivity of detection thereof in mass spectrometry using charged particles. A mass spectrometry method for a polypeptide including a cysteine residue is provided which includes treating the polypeptide including a cysteine residue with a cyanation agent, treating the cyanated polypeptide with a base, and then desorption ionizing the base-treated polypeptides using charged particles for mass spectrometry.

Mass spectrometry method for a polypeptide including a cysteine residue

An optical measurement device includes a light source unit including a first laser light source configured to emit a laser beam having a first wavelength and a second laser light source configured to emit a laser beam having a second wavelength, a measurement wave number setting unit, and a light source adjustment unit configured to adjust at least one of the first wavelength and the second wavelength such that a difference between or a sum of a first wave number corresponding to the first wavelength and a second wave number corresponding to the second wavelength matches a measurement wave number set through the measurement wave number setting unit.

Light source adjustment unit, optical measurement device, subject information obtaining system, and wavelength adjustment program

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Kawasaki, Japan

Jumpei Naito