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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Metabolic cooperation between argininosuccinate synthetase and argininosuccinate lyase deficient human fibroblasts.

Human fibroblasts deficient in either argininosuccinate synthetase or argininosuccinate lyase show low levels of incorporation of [14C]citrulline into protein. However, when these two cell types are co-cultured [14C]citrulline incorporation is restored to the levels found in control cultures. This metabolic cooperation is cell-density-dependent and does not occur by diffusion of argininosuccinate into the medium. Our results indicate that argininosuccinate passes between the two cell types via intercellular junctions, and this system provides a simple and accurately quantifiable model for the study of intercellular communication.[1]

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