http://www.cnr.it/ontology/cnr/individuo/prodotto/ID311941
The Structure of Neuronal Calcium Sensor-1 in Solution Revealed by Molecular Dynamics Simulations (Articolo in rivista)
- Type
- Label
- The Structure of Neuronal Calcium Sensor-1 in Solution Revealed by Molecular Dynamics Simulations (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1371/journal.pone.0074383 (literal)
- Alternative label
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- Bellucci L.; Corni S.; Di Felice R.; Paci E. (literal)
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- Center S3, CNR Institute Nanoscience, Modena, Italy; Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom (literal)
- Titolo
- The Structure of Neuronal Calcium Sensor-1 in Solution Revealed by Molecular Dynamics Simulations (literal)
- Abstract
- Neuronal calcium sensor-1 (NCS-1) is a protein able to trigger signal transduction processes by binding a large number of substrates and re-shaping its structure depending on the environmental conditions. The X-ray crystal structure of the unmyristoilated NCS-1 shows a large solvent-exposed hydrophobic crevice (HC); this HC is partially occupied by the C-terminal tail and thus elusive to the surrounding solvent. We studied the native state of NCS-1 by performing room temperature molecular dynamics (MD) simulations starting from the crystal and the solution structures. We observe relaxation to a state independent of the initial structure, in which the C-terminal tail occupies the HC. We suggest that the C-terminal tail shields the HC binding pocket and modulates the affinity of NCS-1 for its natural targets. By analyzing the topology and nature of the inter-residue potential energy, we provide a compelling description of the interaction network that determines the three-dimensional organization of NCS-1. © 2013 Bellucci et al. (literal)
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