Rapid sampling of molecular motions with prior information constraints.
Proteins are active, flexible machines that perform a range of different functions. Innovative experimental approaches may now provide limited partial information about conformational changes along motion pathways of proteins. There is therefore a need for computational approaches that can efficient...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2009-02-01
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| Series: | PLoS Computational Biology |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19247429/?tool=EBI |
| _version_ | 1819036720476192768 |
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| author | Barak Raveh Angela Enosh Ora Schueler-Furman Dan Halperin |
| author_facet | Barak Raveh Angela Enosh Ora Schueler-Furman Dan Halperin |
| author_sort | Barak Raveh |
| collection | DOAJ |
| description | Proteins are active, flexible machines that perform a range of different functions. Innovative experimental approaches may now provide limited partial information about conformational changes along motion pathways of proteins. There is therefore a need for computational approaches that can efficiently incorporate prior information into motion prediction schemes. In this paper, we present PathRover, a general setup designed for the integration of prior information into the motion planning algorithm of rapidly exploring random trees (RRT). Each suggested motion pathway comprises a sequence of low-energy clash-free conformations that satisfy an arbitrary number of prior information constraints. These constraints can be derived from experimental data or from expert intuition about the motion. The incorporation of prior information is very straightforward and significantly narrows down the vast search in the typically high-dimensional conformational space, leading to dramatic reduction in running time. To allow the use of state-of-the-art energy functions and conformational sampling, we have integrated this framework into Rosetta, an accurate protocol for diverse types of structural modeling. The suggested framework can serve as an effective complementary tool for molecular dynamics, Normal Mode Analysis, and other prevalent techniques for predicting motion in proteins. We applied our framework to three different model systems. We show that a limited set of experimentally motivated constraints may effectively bias the simulations toward diverse predicates in an outright fashion, from distance constraints to enforcement of loop closure. In particular, our analysis sheds light on mechanisms of protein domain swapping and on the role of different residues in the motion. |
| first_indexed | 2024-12-21T08:10:00Z |
| format | Article |
| id | doaj.art-32573e12464a40a8a863bffe9bd70563 |
| institution | Directory Open Access Journal |
| issn | 1553-734X 1553-7358 |
| language | English |
| last_indexed | 2024-12-21T08:10:00Z |
| publishDate | 2009-02-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj.art-32573e12464a40a8a863bffe9bd705632022-12-21T19:10:42ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582009-02-0152e100029510.1371/journal.pcbi.1000295Rapid sampling of molecular motions with prior information constraints.Barak RavehAngela EnoshOra Schueler-FurmanDan HalperinProteins are active, flexible machines that perform a range of different functions. Innovative experimental approaches may now provide limited partial information about conformational changes along motion pathways of proteins. There is therefore a need for computational approaches that can efficiently incorporate prior information into motion prediction schemes. In this paper, we present PathRover, a general setup designed for the integration of prior information into the motion planning algorithm of rapidly exploring random trees (RRT). Each suggested motion pathway comprises a sequence of low-energy clash-free conformations that satisfy an arbitrary number of prior information constraints. These constraints can be derived from experimental data or from expert intuition about the motion. The incorporation of prior information is very straightforward and significantly narrows down the vast search in the typically high-dimensional conformational space, leading to dramatic reduction in running time. To allow the use of state-of-the-art energy functions and conformational sampling, we have integrated this framework into Rosetta, an accurate protocol for diverse types of structural modeling. The suggested framework can serve as an effective complementary tool for molecular dynamics, Normal Mode Analysis, and other prevalent techniques for predicting motion in proteins. We applied our framework to three different model systems. We show that a limited set of experimentally motivated constraints may effectively bias the simulations toward diverse predicates in an outright fashion, from distance constraints to enforcement of loop closure. In particular, our analysis sheds light on mechanisms of protein domain swapping and on the role of different residues in the motion.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19247429/?tool=EBI |
| spellingShingle | Barak Raveh Angela Enosh Ora Schueler-Furman Dan Halperin Rapid sampling of molecular motions with prior information constraints. PLoS Computational Biology |
| title | Rapid sampling of molecular motions with prior information constraints. |
| title_full | Rapid sampling of molecular motions with prior information constraints. |
| title_fullStr | Rapid sampling of molecular motions with prior information constraints. |
| title_full_unstemmed | Rapid sampling of molecular motions with prior information constraints. |
| title_short | Rapid sampling of molecular motions with prior information constraints. |
| title_sort | rapid sampling of molecular motions with prior information constraints |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19247429/?tool=EBI |
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