Table 5.

Residues that shift E_m(P_A) and E_m(P_B) in the PSI protein environment (mV)

Residue	Em(PA) shift			Residue	Em(PB) shift
	Side chain	Backbone	Total		Side chain	Backbone	Total
Decreasing Em(PA) and Em(PB)
Asp-B444	−94	4	−90	Asp-A463	−102	4	−98
Asp-A463	−70	3	−67	His-B660	−70	6	−64
His-A680	−72	5	−67	Asp-B444	−66	3	−63
A–1A			−65	FX			−47
FX			−48	Asp-B575	−42	0	−42
Asp-B575	−41	0	−42	A–1B			−41
Asp-A593	−33	−2	−35	Asp-B580	−31	−2	−33
His-B660	−31	0	−31	His-A680	−31	−1	−32
Asp-B580	−28	−2	−30	Asp-A593	−29	−2	−31