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Protein-protein interaction substrate channelling and post-translational modification in multienzyme complexes

ReferenceB09560
Principal Investigator / Supervisor Professor Richard Perham
Co-Investigators /
Co-Supervisors
Institution University of Cambridge
DepartmentBiochemistry
Funding typeResearch
Value (£) 175,597
StatusCompleted
TypeResearch Grant
Start date 01/08/1998
End date 01/08/2001
Duration36 months

Abstract

High-expression systems for the E1 components of 2-oxo acid dehydrogenase complexes will be perfected and the interaction of E1 with the lipoyl domains of the E2 components will be studied using directed mutagenesis, SPR and NMR spectroscopy. This interaction forms the molecular basis of substrate channelling and will be distinguished from subsequent catalytic events, notably reductive acylation of the pendant lipoyl group. Similar experiments will be carried out on post-translational modification of the E2 lipoyl domains and the structurally homologous biotinyl domain of acetylCoA carboxylase by their respective ligases. This will explain how target lysine residues are selected for attachment of the catalytically essential swinging arms.

Summary

unavailable
Committee Closed Committee - Biomolecular Sciences (BMS)
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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