Fig. 7.

Comparison of ¹³C R ₁ relaxation in partially deuterated and non-deuterated samples. a–c Representative R ₁ relaxation decays measured for two Phe residues (a–b) and one His (c) on a partially deuterated sample (open circles) and non-deuterated sample (black circles). d Fitted R ₁ relaxation rate constants for all ¹³C sites characterized in Gal3C. The deuteration levels at the vicinal sites are estimated to 50–55 % for Phe and Tyr ¹Hε, and 60 % for Trp ¹Hζ3 (see Table S1)