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Computational Biology Commons

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COBRA Preprint Series

2009

Articles 1 - 2 of 2

Full-Text Articles in Computational Biology

Targeted Genomic Signature Profiling With Quasi-Alignment Statistics, Rao Mallik Kotamarti, Douglas W. Raiford, Michael Hahsler, Yuhang Wang, Monnie Mcgee, Maggie Dunham Nov 2009

Targeted Genomic Signature Profiling With Quasi-Alignment Statistics, Rao Mallik Kotamarti, Douglas W. Raiford, Michael Hahsler, Yuhang Wang, Monnie Mcgee, Maggie Dunham

COBRA Preprint Series

Genome databases continue to expand with no change in the basic format of sequence data. The prevalent use of the Classic alignment based search tools like BLAST have significantly pushed the limits of Genome Isolate research. The relatively new frontier of Metagenomic research deals with thousands of diverse genomes with newer demands beyond the current homologue search and analysis. Compressing sequence data into a complex form could facilitate a broader range of sequence analyses. To this end, this research explores reorganizing sequence data as complex Markov signatures also known as Extensible Markov Models. Markov models have found successful application in …


A Novel Topology For Representing Protein Folds, Mark R. Segal Mar 2009

A Novel Topology For Representing Protein Folds, Mark R. Segal

COBRA Preprint Series

Various topologies for representing three dimensional protein structures have been advanced for purposes ranging from prediction of folding rates to ab initio structure prediction. Examples include relative contact order, Delaunay tessellations, and backbone torsion angle distributions. Here we introduce a new topology based on a novel means for operationalizing three dimensional proximities with respect to the underlying chain. The measure involves first interpreting a rank-based representation of the nearest neighbors of each residue as a permutation, then determining how perturbed this permutation is relative to an unfolded chain. We show that the resultant topology provides improved association with folding and …