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- V Henne, A Piiper, H D Söling
- FEBS letters
- 1987

It has been shown recently by several groups that 5'-GTP can release calcium from intracellular compartments independently from inositol 1,4,5-trisphosphate (Ins(1,4,5)P3) by a mechanism which seems to be different from that used by Ins(1,4,5)P3. We report here for the first time that the 5'-GTP-sensitive and the Ins(1,4,5)P3-sensitive calcium pools reside… (More)

We develop a multilevel algorithm for hypergraph partitioning that contracts the vertices one at a time and thus allows very high quality. This includes a rating function that avoids nonuniform vertex weights, an efficient " semi-dynamic " hypergraph data structure, a very fast coarsening algorithm, and two new local search algorithms. One is a k-way… (More)

We develop a multilevel algorithm for hypergraph partitioning that contracts the vertices one at a time. Using several caching and lazy-evaluation techniques during coarsen-ing and refinement, we reduce the running time by up to two-orders of magnitude compared to a naive n-level algorithm that would be adequate for ordinary graph partitioning. The overall… (More)

Many problems in computer science can be represented by a graph and reduced to a graph clustering or k-way partitioning problem. In the classical definition, a graph consists of nodes and edges which usually connect exactly two nodes. Hypergraphs are a generalization of graphs, where every edge can connect an arbitrary number of nodes. Recent results… (More)

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