In metabolic engineering, systems which allow coordinated control of two metabolic pathways can be useful. We designed two expression systems and demonstrated their application by coordinating glycogen synthesis and degradation. The first expression vector pMSW2 expressed the glycogen synthesis gene
Molecular and metabolic aspects of lysosomal glycogen
β Scribed by Robert Geddes; Pooranalingham Jeyarathan; Jacqueline A. Taylor
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 620 KB
- Volume
- 227
- Category
- Article
- ISSN
- 0008-6215
No coin nor oath required. For personal study only.
β¦ Synopsis
The high molecular weight glycogen associated with the lysosomal compartment in glycogen storage disease type VIII is more resistant to degradation by proteinase than normal glycogen. The assembly of large glycogen particles on disulphide-linked protein backbones has been confirmed and the disulphide-reducing nature of the lysosome appears to confer an advantage in the amylolytic degradation of glycogen. Experiments utilising acarbose, a lysosomal (1----4)-alpha-D-glucosidase inhibitor, show that some blood glucose could arise in normal mammals from extra-hepatic tissue, by degradation of the glycogen in the lysosomal compartment.
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