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. 1997 May 13;94(10):5090–5094. doi: 10.1073/pnas.94.10.5090

Figure 4.

Figure 4

Phosphoamino acid analysis of 20-kDa and 23-kDa PS1 CTFs. COS-huPS1 cells were labeled with [32P]orthophosphate, treated with PDBu, and subjected to immunoprecipitation. The two major phosphorylated CTF species were subjected to phosphoamino acid analysis and were visualized by phosphorimager.