Protein structure calculation with a max-min ant system

Gimmler, Jens; Gronwald, Wolfram; Möller, Heiko M.; Exner, Thomas E.

Protein structure calculation with a max-min ant system

Dateien

Gimmler_104691.pdfGröße: 57.25 KBDownloads: 421

Datum

2009

Autor:innen

Gimmler, Jens

Gronwald, Wolfram

Möller, Heiko M.

Exner, Thomas E.

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Chemie
Zukunftskolleg

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Chemistry Central Journal. 2009, 3(Suppl 1), pp. P52. ISSN 1752-153X. Available under: doi: 10.1186/1752-153X-3-S1-P52

Zusammenfassung

Despite the fact that many different programs have been developed in the field of NMR-based structure determination, the 3D structure determination of a large protein is still very time consuming and needs a lot of manual intervention. Therefore, it is highly desired to automate as many of the steps "peak picking", "assignment", and "structure calculation" as possible in a self-consistent manner. To be successful, such programs have to be very flexible to benefit from different types of constraints and robust in dealing with ambiguities and noise in the spectra. Here, we introduce a new expandable approach to determine the 3D structure of proteins. At the moment this includes the final step of structure calculation from distance as well as angle constraints. A special kind of Ant Colony Optimization algorithm, namely a Max-Min Ant System (MMAS) is used to optimize the protein conformation in torsion angle space. The structure is optimized with respect to a target function that scores the different conformations taking constraint violations into account. New developments aim at considering highly ambiguous distance constraints, which are obtained from automatic NOE assignments. To cope with these ambiguous distance constraints we use different approaches, especially probabilities for possible assignments calculated with the program KNOWNOE to guide the search.

Fachgebiet (DDC)

540 Chemie

Zitieren

ISO 690

GIMMLER, Jens, Wolfram GRONWALD, Heiko M. MÖLLER, Thomas E. EXNER, 2009. Protein structure calculation with a max-min ant system. In: Chemistry Central Journal. 2009, 3(Suppl 1), pp. P52. ISSN 1752-153X. Available under: doi: 10.1186/1752-153X-3-S1-P52

BibTex

@article{Gimmler2009Prote-9858,
  year={2009},
  doi={10.1186/1752-153X-3-S1-P52},
  title={Protein structure calculation with a max-min ant system},
  number={Suppl 1},
  volume={3},
  issn={1752-153X},
  journal={Chemistry Central Journal},
  author={Gimmler, Jens and Gronwald, Wolfram and Möller, Heiko M. and Exner, Thomas E.},
  note={Article Number: P52}
}

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