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High-Resolution Mass Spectrometry (HRMS)01:15

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The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the sum of the masses of protons and neutrons inside, considering the masses of protons and neutrons as equal. However, the masses of the proton (1.6726 × 10−24 g) and neutron (1.6749 × 10−24 g) are not truly equal. There is a minor error in the expression of atomic masses relative to the simplest atom of hydrogen. For...
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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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OctoChemDB:高解像度MSデータを用いた小分子識別のための集約データベース.

Ricardo Silvestre1,2, Rémi Martinent1, Laure Menin2

  • 1School of Engineering and Architecture, Institute of Chemical Technology, HES-SO University of Applied Sciences and Arts Western Switzerland, Fribourg 1700, Switzerland.

Analytical chemistry
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まとめ
この要約は機械生成です。

OctoChemDBは,化学,生物,スペクトルデータを集中して,小分子識別を強化します. その REST API と Web アプリケーションは,迅速な m/z ベースの検索とスペクトルマッチングを可能にし,効率的なデレプリケーションを可能にします.

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科学分野:

  • 計算化学と化学情報学
  • 分析化学と質量スペクトロメトリ
  • バイオインフォマティクスとデータサイエンス

背景:

  • 高解像度質量スペクトロメトリ (HRMS) は,化学データベースを使用した小分子デレプリケーションに不可欠です.
  • 既存のデータベースには,直接的なm/zベースの検索機能や,強力なスペクトルデータ処理機能が欠けていることが多い.
  • これは,化合物の急速識別ワークフローの効率を制限する.

研究 の 目的:

  • 多様な化学,生物,スペクトルデータを統合した集中データベースであるOctoChemDBを開発する.
  • 研究ワークフローにシームレスに統合するために,REST APIを介してプログラムアクセスを提供します.
  • 先進的な小分子識別とデレプリケーションのためのユーザーフレンドリーなWebアプリケーションを作成します.

主な方法:

  • オープンアクセスリソース (PubChem,MassBank,GNPS) から集約され,調和されたデータ.
  • データをクエリするためのREpresentational State Transfer Application Program Interface (REST API) を実装しました.
  • m/zベースの検索,式予測,同位体相似性,断片分析,文献検索を備えたウェブアプリケーションを開発しました.

主要な成果:

  • OctoChemDBは,異なった化学およびスペクトルのデータセットを統合し,調和させることに成功しています.
  • REST APIは,統合されたデータの効率的なプログラムアクセスとカスタムクエリを可能にします.
  • ウェブアプリケーションは,ケーススタディ (例えば,MDMA,カフェイン) を通じて,小分子識別を効果的に実証しました.

結論:

  • OctoChemDBとその関連するAPI/ウェブアプリケーションは,小分子識別とデレプリケーションを大幅に加速します.
  • このプラットフォームは,HRMSデータを活用する研究者のための強力でユーザーフレンドリーなツールを提供します.
  • オープンソースの利用可能性は,さらなる開発と多様な化学情報工学のワークフローへの統合を促進します.