NMR analysis.

1H NMR based characterization of AT1-HSA, HSA and AT1 peptide. The AT1 peptide exhibits a spectrum with sharp peaks at δ = 0.5–1.0, δ = 1.1–2.1, δ = 2.8–3.8, δ = 4.0–5.0 and δ = 6.3–7.3. The peaks at δ = 6.8 due to tyrosine and around δ = 3.8–4.0 due to glycine from the AT1 peptide can be seen on the AT1-HSA spectrum around δ = 3.5–4.0 and 6.8 ppm.