In our model, TTX docked with the unmodified DEKA channel shows classic interactions with known TTX-binding determinants, including D377 [20] and F378 [21] (housefly numbering) in DI, E985 (DII) [20] and K1497 (DIII).
Interactions between nonpolar and polar groups occur rarely, because of the free energy cost of desolvating a hydrogen bond donor or acceptor without a compensating hydrogen bond, yet nonpolar−polar interactions can provide some specificity among interacting partners; on the other hand, classic hydrophobic interactions cannot, where two interacting partners can readily slide relative to one other.
Without considering long-term shrinkage and creep effects in the concrete, Newmark, Siess and Viest deriived the classic partial interaction solution in 1951, quantifying the increase in beam's stiffness as the stiffness of the mechanical shear connection increases; the solution being represented with hyperbolic trigonometric functions.
This classic GxE interaction led to a burgeoning of research that remains controversial (4 6,12).
In the classic single interaction model, cheating is always favored over cooperation (T > R > P > S, see methods above and Fig. 2a).
This mutually exclusive relationship between these two gene mutations has also been noted by Kandoth et al. "Mutual exclusivity" of mutations is indicative of a classic genetic interaction between genes that function in the same pathway.
In one classic gene environment interaction, people with an inherited mutation at allele 1555 of mitochondrial DNA (found in 1 of every 1,200 people) will have a high likelihood of deafness with exposure to aminoglycoside antibiotics such as gentamicin, says Cohen.
Thus in addition to the classic switch interactions where miRNA induction results in the downregulation of preexisting mRNA targets, other types of interactions described as tuning and neutral are also possible [9], [38].
The resulting mode shapes are defined as continuous functions; this is advantageous as they can be directly used in the second approach, i.e., the classic modal-interaction approach in order to obtain the coupled equations of the system.
These data suggest that thalamocortical interactions in the rat somatosensory system can generate complex spatial transformations of multiwhisker stimuli that go beyond the classic inhibitory interactions previously observed.
