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Importance of malto-oligosaccharides in the synthesis of starch

ReferenceD08036
Principal Investigator / Supervisor Professor Alison Smith
Co-Investigators /
Co-Supervisors
Professor Cathie Martin
Institution John Innes Centre
DepartmentMetabolic Biology
Funding typeResearch
Value (£) 167,572
StatusCompleted
TypeResearch Grant
Start date 03/11/1997
End date 03/11/2000
Duration36 months

Abstract

We propose to exploit our recent discovery that maltooligosaccharides (Mos) are required for the synthesis of the amylose component of starch. First, the Mos content of potato tubers will be lowered by expression of a yeast alpha -glucosidase. This is expected to result in a low-amylose starch, in which the isoform of starch synthase normally responsible for amylose synthesis (GBSSI) instead elongates amylopectin chains. The functional properties of this starch are predicted to be intermediate between those of wild-type and waxy starches. Second, the nature of the effect of Mos on GBSSI will be elucidated, and the location of GBSSI within starch granules will be defined. The project will deliver new, basic knowledge about the determination of starch structure and functionality, and novel starches which are likely to be of direct commercial value.

Summary

unavailable
Committee Closed Committee - Agri-food (AF)
Research TopicsX – not assigned to a current Research Topic
Research PriorityX – Research Priority information not available
Research Initiative X - not in an Initiative
Funding SchemeX – not Funded via a specific Funding Scheme
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