Correction for: Chennubhotla C, Bahar I (2007) Signal propagation in proteins and relation to equilibrium fluctuations. PLoS Comput Biol 3(9): e172. doi: 10.1371/journal.pcbi.0030172
Four mathematical expressions appeared incorrectly. The correct expressions follow.
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The hitting time expression Equation 14 involves three different types of contributions: a one-body term that depends on the destination node, 
; a two-body term that depends on the initial and final nodes, 
; and a series of three-body terms that depend on intermediate nodes, in addition to the two end points, 
.
Derivation of Equation 14. The discussion below borrows from results in [12,13]. Deriving 
from 
is a three-step process: …