Abstract
The molecular weights of femtomole quantities of small peptides attached to polystyrene beads have been determined with imaging time-of-flight secondary ion mass spectrometry. The analysis is made possible by the selective clipping of the bond linking the peptide to a bead with trifluoroacetic acid vapor before the secondary ion mass spectrometry assay. The approach can be applied to large numbers of 30- to 60-micrometer polystyrene beads for the direct characterization of massive combinatorial libraries.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 399-402 |
| Number of pages | 4 |
| Journal | Science |
| Volume | 264 |
| Issue number | 5157 |
| State | Published - Apr 15 1994 |
All Science Journal Classification (ASJC) codes
- General