. Author manuscript; available in PMC: 2013 Jul 4.

Published in final edited form as: J Am Chem Soc. 2012 Jun 22;134(26):10717–10720. doi: 10.1021/ja300624j

Table 1.

Exchange rate, protection factors and "W" coupling constants measured at 263K

	k_HD (Hz)	β PF^*	α PF^**	⁴J_H7-C2 (Hz)
Residue I	0.90 ± 0.12	3.33	3.79	NO
Residue II	1.28 ±0.33	2.34	2.66	0.8 ± 0.5
Residue III	0.77 ± 0.28	3.90	4.43	1.5 ± 0.5
Residue IV	3.41 ± 0.06	0.88	1.00	NO

Protection factor with respect to SiA monomer;

^**

Protection factor with respect to Residue IV; NO means that no correlation was observed