The Bhopalator 141“6x9” b2861 The Cell Language Theory: Connecting Mind and Matterpassive and active ATP syntheses is that the structural changes undergone
by the ATPase when catalyzing the former belong to the category of “pas-
sive conformations”, while those of the ATPase when catalyzing the latter
belong to the category of “active conformations” as defined in Table 3.17.
Active ATP synthesis driven by active conformational changes of ATP
synthase can be considered as being driven by the mechanical (e.g., elastic
or torsional) energy, i.e., conformons (Section 3.4), stored in ATP syn-
thase and thus can be represented as follows:ADP + Pi + conformationally strained ATP synthase
↓1
ATP + conformationally relaxed ATP synthase (3.42)Equivalently,ADP + Pi + conformons → ATP + H 2 O (3.43)which is more clearly represented as
[AD.Pi] → (ATP.H 2 O) (3.44)where the symbols [...] and (...) indicate, respectively, the conformation-
ally strained (the high affinity form, H) and conformationally relaxed (the
medium affinity form, M) nucleotide binding pockets of ATP synthase,
i.e., the b-subunit of the F 1 F 0 –ATP synthase (see Figure 3.35).
Just as active transport of K+ into the cell can occur despite the fact
that there are more K+ inside than outside the cell driven by the Na+/K+
ATPase, so it can be predicted that the active synthesis of ATP can occur
even if the H+ and ATP concentrations are high inside the matrix space
relative to their concentrations in the intermembrane space.3.3.9 Cytochrome c Oxidase an Electron-Driven Proton Sink
and Pump
In 1977, Wikstrὃm [216] measured the trans-membrane pH gradient,
trans-membrane electrical potential, ∆y, and the conformational changeb2861_Ch-03.indd 141 17-10-2017 11:46:53 AM