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. 1969 Dec;115(4):703–707. doi: 10.1042/bj1150703

Studies on the permeability of rat liver lysosomes to carbohydrates

J B Lloyd 1,*
PMCID: PMC1185196  PMID: 5357017

Abstract

1. The latency of nitrocatechol sulphatase activity was measured in rat liver lysosomes before and after preincubation in 0·25m solutions of 25 different carbohydrates. 2. Preincubation in disaccharides, hexitols, gluconate, glucuronate or lactate gave little or no rise in `free' sulphatase activity, indicating that these compounds do not easily penetrate the lysosomal membrane, but incubation in monosaccharides or the lower glycitols caused a progressive loss of latency. 3. Rates of increase in `free' activity were taken as an indication of rates of solute penetration into lysosomes and were correlated with the structure and molecular weight of each sugar. 4. Additional evidence for non-penetration of maltose was obtained by demonstrating that the latency of lysosomal α-glucosidase is independent of substrate concentration employed. 5. The results are discussed in the light of published data on the latency of lysosomal enzymes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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