TABLE 1.

Comparison of quadrupolar splittings of 1-Me-Trp versus Trp in gA

See “Results” for assignment information. All samples were oriented at β = 0°. A quadrupole coupling constant of 180 kHz (static value) was used to estimate the ΔΘ values.

Trp position	C2 deuteron Δνq		ΔΘ
	Trpa	1-Me-Trp
	kHz			degrees
9	43	62	2.7
11	96	143	6.9
13	106	126	2.9
15	125	153	4.3

Trp position	C5 deuteron Δνq		ΔΘ
	Trpa	1-Me-Trp
	kHz			degrees
9	151	168	2.7
11	188	204	2.9
13	205	206	0.2
15	205	207	0.4

^aData from Ref. 44.