Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coupling between switching regulation and torque generation in bacterial
  flagellar motor   The bacterial flagellar motor plays a crucial role in both bacterial
locomotion and chemotaxis. Recent experiments reveal that the switching
dynamics of the motor depends on the motor rotation speed, and thus the motor
torque, non-monotonically. Here we present a unified mathematical model which
models motor torque generation based on experimental torque-speed curves and
torque-dependent switching based on the conformational spread model. The model
successfully reproduces the observed switching rate as a function of the
rotation speed, and provides a generic physical explanation independent of most
details. A stator affects the switching dynamics through two mechanisms:
accelerating the conformation flipping rates of individual rotor switching
units, which favours slower motor speed and thus increasing torque; and
affecting more switching units within unit time, which favours faster speed.
Consequently, the switching rate shows a maximum at intermediate speed. Our
model predicts that a motor switches more often with more stators. The
load-switching relation may serve as a mechanism for sensing the physical
environment, similar to the chemotaxis system for sensing the chemical
environment. It may also coordinate the switch dynamics of motors within a
cell.

36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom