TABLE 2

β-Alanine dose-response data for GlyRs with unnatural amino acids incorporated at positions 63, 159, and 207

Data are presented as mean ± S.E.M.

EC50nHR(β-Ala/Gly)n
μM
63-Phe (WT)315 ± 161.6 ± 0.11.0 ± 0.36
63-F-Phe123 ± 4*2.2 ± 0.11.1 ± 0.45
63-F2-Phe3890 ± 150*1.6 ± 0.10.5 ± 0.24
63-F3-Phe1590 ± 210*1.6 ± 0.40.2 ± 0.14
159-Phe (WT)373 ± 82.0 ± 0.10.8 ± 0.14
159-F-Phe470 ± 33*1.9 ± 0.20.9 ± 0.35
159-F2-Phe3290 ± 120*1.7 ± 0.10.7 ± 0.26
159-CN-Phe11,500 ± 500*1.6 ± 0.10.7 ± 0.17
159-F3-Phe20,600 ± 2100*1.3 ± 0.20.1 ± 0.015
207-Phe (WT)559 ± 301.7 ± 0.20.8 ± 0.13
207-F-Phe615 ± 541.6 ± 0.20.5 ± 0.15
207-F2-Phe32,300 ± 1500*2.1 ± 0.20.1 ± 0.034
207-CN-Phe5080 ± 140*1.6 ± 0.10.4 ± 0.027
207-F3-Phe47,900 ± 2100*1.9 ± 0.40.1 ± 0.034
  • * P < 0.05, significantly different from WT for EC50 values (Student's t test).