Cell Language Theory, The: Connecting Mind And Matter

(Elliott) #1
132 The Cell Language Theory: Connecting Mind and Matter

b2861 The Cell Language Theory: Connecting Mind and Matter “6x9”

biology have been citing the chemiosmosis as the sole mechanism of cou-
pling respiration to phosphorylation in mitochondria. For example, see
[213] reproduced in Figure 3.34(a).
The new experimental data that have emerged during the last two
decades in terms of the high-resolution X-ray structure of the F 1 F 0 –ATP
synthase and ETCs I, III, and IV make it necessary to re-evaluate the
basic premises underlying the chemiosmotic model of oxphos, in
agreement with recent criticism against the Mitchell model voiced by
Nath [151, 177]. One way to bring together these new developments
in the field of mitochondrial bioenergetics is shown in Figure 3.35.
The formulation of the new mechanism of oxphos presented in this
figure incorporates the experimental findings reported mainly by three
groups:

(i) the group in Helsinki headed by M. Wikstrὃm whose extensive work
on the proton-translocating cytochrome c oxidase dates back to the
early 1970s [241],
(ii) the group in Rochester led by A. Senior whose work on the structure
of the ATP synthase or Complex V also goes back to the early 1970s
[242], and
(iii) the group in Tokyo headed by H. Noji who demonstrated the rotary
motion of the g-subunit in 2001 [205] and the rotational propagation
of the conformational waves in the a 3 b 3 hexamer of the F 1 -subunit in
2011 [85].

It is for this reason that I elected to name the mechanism of oxphos
shown in Figure 3.35 the Rochester–Noji–Helsinki (RoNoH) mechanism.
(In passing, I should point out that I originally named the mechanism the
Senior−Noji–Wikstrὃm (SNoW) mechanism but had to change it to
RoNoH to comply with the wishes of the two of the three investigators
named above.)
What is prominently shown in Figure 3.35 is the rotary motion of the
conformational waves through the b-subunits but not the underlying
rotary motions of the g-subunit which is ultimately coupled to the flow
of protons through the F 0 -subunit. One possible mechanism for the hid-
den rotary motions of the g-subunit driven by the proton flow through the

b2861_Ch-03.indd 132 17-10-2017 11:46:49 AM

Free download pdf