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Somya, Mani
첨단연성물질 연구단
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Graph-theoretic constraints on vesicle traffic networks

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Title
Graph-theoretic constraints on vesicle traffic networks
Author(s)
SOMYA MANI; Krishnan, Kesav; Thattai, Mukund
Publication Date
2022-03
Journal
JOURNAL OF BIOSCIENCES, v.47, no.1
Publisher
INDIAN ACAD SCIENCES
Abstract
Eukaryotic cells use small membrane-enclosed vesicles to transport molecular cargo between intracellular compartments. Interactions between molecules on vesicles and compartments determine the source and target compartment of each vesicle type. The set of compartment and vesicle types in a cell define the nodes and edges of a transport graph known as the vesicle traffic network. The transmembrane SNARE proteins that regulate vesicle fusion to target compartments travel in cycles through the transport graph, but the paths they follow must be tightly regulated to avoid aberrant vesicle fusion. Here we use graph-theoretic ideas to understand how such molecular constraints place constraints on the structure of the transport graph. We identify edge connectivity (the minimum number of edges that must be removed to disconnect a graph) as a key determinant that separates allowed and disallowed types of transport graphs. As we increase the flexibility of molecular regulation, the required edge connectivity decreases, so more types of vesicle transport graphs are allowed. These results can be used to aid the discovery of new modes of molecular regulation and new vesicle traffic pathways.
URI
https://pr.ibs.re.kr/handle/8788114/11383
DOI
10.1007/s12038-021-00252-5
ISSN
0250-5991
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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