These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Identification of hemoglobin variants by top-down mass spectrometry using selected diagnostic product ions.
    Author: Coelho Graça D, Hartmer R, Jabs W, Beris P, Clerici L, Stoermer C, Samii K, Hochstrasser D, Tsybin YO, Scherl A, Lescuyer P.
    Journal: Anal Bioanal Chem; 2015 Apr; 407(10):2837-45. PubMed ID: 25753013.
    Abstract:
    Hemoglobin disorder diagnosis is a complex procedure combining several analytical steps. Due to the lack of specificity of the currently used protein analysis methods, the identification of uncommon hemoglobin variants (proteoforms) can become a hard task to accomplish. The aim of this work was to develop a mass spectrometry-based approach to quickly identify mutated protein sequences within globin chain variants. To reach this goal, a top-down electron transfer dissociation mass spectrometry method was developed for hemoglobin β chain analysis. A diagnostic product ion list was established with a color code strategy allowing to quickly and specifically localize a mutation in the hemoglobin β chain sequence. The method was applied to the analysis of rare hemoglobin β chain variants and an (A)γ-β fusion protein. The results showed that the developed data analysis process allows fast and reliable interpretation of top-down electron transfer dissociation mass spectra by nonexpert users in the clinical area.
    [Abstract] [Full Text] [Related] [New Search]