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. Author manuscript; available in PMC: 2019 Jul 3.
Published in final edited form as: Biochemistry. 2018 May 24;57(26):3861–3866. doi: 10.1021/acs.biochem.8b00393

Figure 5.

Figure 5.

(A) MALDI mass spectra of Aβ(M1–42) peptides with A21G, E22G, E22K, and D23N mutations. (B) Typical yields of Aβ(M1–42), 15N-labeled Aβ(M` 1–42), and mutant Aβ(M1–42) peptides.