Analytical Singular Value Decomposition for a Class of Stoichiometry Matrices
Analytical Singular Value Decomposition for a Class of Stoichiometry Matrices
复制标题
一类化学计量矩阵的解析奇异值分解
DOI:
10.1137/21m1418927
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发表时间:
2022
影响因子:
1.5
通讯作者:
Bortz, David M.
中科院分区:
文献类型:
--
作者:
Wentz, Jacqueline;Cameron, Jeffrey C.;Bortz, David M.
We present the analytical singular value decomposition of the stoichiometry matrix for a spatially discrete reaction-diffusion system. The motivation for this work is to develop a matrix decomposition that can reveal hidden spatial flux patterns of chemical reactions. We consider a 1D domain with two subregions sharing a single common boundary. Each of the subregions is further partitioned into a finite number of compartments. Chemical reactions can occur within a compartment, whereas diffusion is represented as movement between adjacent compartments. Inspired by biology, we study both (1) the case where the reactions on each side of the boundary are different and only certain species diffuse across the boundary and (2) the case where reactions and diffusion are spatially homogeneous. We write the stoichiometry matrix for these two classes of systems using a Kronecker product formulation. For the first scenario, we apply linear perturbation theory to derive an approximate singular value decomposition in the limit as diffusion becomes much faster than reactions. For the second scenario, we derive an exact analytical singular value decomposition for all relative diffusion and reaction time scales. By writing the stoichiometry matrix using Kronecker products, we show that the singular vectors and values can also be written concisely using Kronecker products. Ultimately, we find that the singular value decomposition of the reaction-diffusion stoichiometry matrix depends on the singular value decompositions of smaller matrices. These smaller matrices represent modified versions of the reaction-only stoichiometry matrices and the analytically known diffusion-only stoichiometry matrix. Lastly, we present the singular value decomposition of the model for the Calvin cycle in cyanobacteria and demonstrate the accuracy of our formulation. The MATLAB code, available at www.github.com/MathBioCU/ReacDiffStoicSVD, provides routines for efficiently calculating the SVD for a given reaction network on a 1D spatial domain.
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影响因子:
16.6
作者:
Soh, Siowling;Byrska, Marta;Kandere-Grzybowska, Kristiana;Grzybowski, Bartosz A.
通讯作者:
Grzybowski, Bartosz A.
DOI:
10.1016/j.camwa.2019.10.020
发表时间:
2019
期刊:
Comput. Math. Appl.
影响因子:
--
作者:
M. D’Autilia;I. Sgura;V. Simoncini
通讯作者:
V. Simoncini
影响因子:
2
作者:
Famili, I;Palsson, BO
通讯作者:
Palsson, BO
影响因子:
2.9
作者:
Michaelis L;Menten ML;Johnson KA;Goody RS
通讯作者:
Goody RS
DOI:
10.1016/j.biosystems.2012.04.001
发表时间:
2012
期刊:
Bio Systems
影响因子:
--
作者:
L. Palese;F. Bossis
通讯作者:
F. Bossis