| Autor: |
Jordan JS; Department of Chemistry, University of California, Berkeley, California 94720-1460, United States., Harper CC; Department of Chemistry, University of California, Berkeley, California 94720-1460, United States., Williams ER; Department of Chemistry, University of California, Berkeley, California 94720-1460, United States. |
| Jazyk: |
angličtina |
| Zdroj: |
Analytical chemistry [Anal Chem] 2024 Oct 12. Date of Electronic Publication: 2024 Oct 12. |
| DOI: |
10.1021/acs.analchem.4c04669 |
| Abstrakt: |
Protein aggregation is involved in many human diseases, but characterizing the sizes and shapes of intermediate oligomers (∼10-100 nm) that are important to the formation of macroscale aggregates like amyloid fibrils is a significant analytical challenge. Here, charge detection mass spectrometry (CDMS) is used to characterize individual conformational states of bovine serum albumin oligomers with up to ∼225 molecules (15 MDa). Elongated, partially folded, and globular conformational families for each oligomer can be readily distinguished based on the extent of charging. The abundances of individual conformers vary with changes in the monomer concentration or by adding aggregation inhibitors, such as SDS, heparin, or MgCl 2 . These results show the potential of CDMS for investigating intermediate oligomers in protein aggregation processes that are important for understanding aggregate formation and inhibition mechanisms and could accelerate formulation buffer development to prevent the aggregation of biotherapeutics. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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