Objective
Isoform complexes of Na,K-ATPase , an αβ-heterooligomer, have recently been identified as crucial regulators of muscle and neural physiology and were furthermore identified as the primary cause of neurological diseases. Of particular interest are α2β2 & α2β3, which are expressed in muscle and astrocytes (α2β2) and the ciliary body (α2β3). Both exhibit a significantly lower affinity for K-ions and a steeper voltage dependence than the housekeeping α1β1 complex. These features keep α2-isoforms inactive at resting conditions but allow to respond to transient elevations of extracellular K after muscle and neuronal activity. Moreover, both complexes can be selectively inhibited by cardiac steroids, making them promising drug targets for the treatment of heart failure (α2β2) and glaucoma (α2β3). Differences in affinity for K and cardiac steroids were attributed to the β-subunit recently, yet the root cause and molecular details remained elusive. Hence, I propose to investigate the structure of α2-isoforms purified from the yeast Pichia pastoris by x-ray crystallography and cryo electron microscopy. In addition to its physiological and pharmacological role mutations of Na,K-ATPase cause severe neurological diseases, e.g. Alternating Hemiplegia of Childhhod. Disease mutations typically inactivate the Na-pump causing severe motor and cognitive disorder. However, the effects of mutations on the ATPase’s reaction cycle have not been investigated in detail, leaving the cause of inactivation in the dark. Part two of the proposal addresses this gap of knowledge. The two most common mutations E815K and D801N will be expressed in P. pastoris and the effect of mutations on partial reactions of the Na,K-ATPase’s reaction cycle will be investigated and subsequently, structural studies will be carried out. This work will promote our understanding of Na,K-ATPase in health and disease and lay the foundation for the development of new drugs.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- medical and health sciences clinical medicine ophthalmology glaucoma
- natural sciences physical sciences optics microscopy electron microscopy
- natural sciences biological sciences genetics mutation
- medical and health sciences basic medicine physiology
- medical and health sciences clinical medicine cardiology
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2017
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
8000 Aarhus C
Denmark
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.