. Author manuscript; available in PMC: 2015 Oct 9.

Published in final edited form as: Biochim Biophys Acta. 2008 Feb 20;1784(9):1200–1207. doi: 10.1016/j.bbapap.2008.01.020

Table 2.

Secondary structure parameters of AChR LETMDs determined by TrpPPs and FT power spectra.

		TrpPPs		FT power spectra

AChR type	No residues	Periodicity	Expected rotation angle	Rotation angle	Peak ratio	Mean periodicity

		residues/turn	Degree	degree		residues/turn
αM3 Muscle-type	18	3.24 ± 0.70	111.11	102.25	2.94	3.52
αM3 Torpedo	13	3.17 ± 1.04	113.56	115.00	0.53	3.13
αM4 Torpedo	11	3.28 ± 0.74	109.76	100.76	3.15	3.57
βM3 Torpedo	15	2.61 ± 0.74	137.93	138.06	0.75	2.61
γM4 Torpedo	12	3.19 ± 0.45	112.85	108.88	2.67	3.31

Given values correspond to analysis performed on the entire sequence of ACh EC₅₀ values from the AChR LETMDs. Periodicities of the TrpPPs are given as mean ± SD. Expected rotation angles of the TrpPPs and the mean periodicities of the peaks that correspond to mean periodicities of the TrpPPs were calculated using periodicity (residues/turn) = 360°/rotation angle.