Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Clustering and Signalling of Cell Receptors   As a response to ligand binding, transmembrane cell receptors often enhance
their clustering, or oligomerization, during the signalling process. Here we
present a statistical mechanical model which combines the aspects of clustering
and signalling. In this model, receptors float on the surface, while for two
neighboring receptors, there is an interaction energy dependent on their
conformational states. On the other hand, ligand binding of a receptor shifts
the energy difference between the two conformational states. Due to thermal
fluctuation, the effects of clustering and signalling are statistical average
quantities. This model reduces to a floating Ising model with a random field.
We calculate the signalling in a grand canonical ensemble mean field approach,
using Hubbard-Stratonovich transformation and replica method. Monte Carlo
simulations are also performed. Essential biological features are obtained in
our model.

6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom