RCSB PDB - 1C3T: ROTAMER STRAIN AS A DETERMINANT OF PROTEIN STRUCTURAL SPECIFICITY (original) (raw)
1C3T | pdb_00001c3t
ROTAMER STRAIN AS A DETERMINANT OF PROTEIN STRUCTURAL SPECIFICITY
This is version 1.4 of the entry. See complete history.
Rotamer strain as a determinant of protein structural specificity.
[Lazar, G.A.](/search?q=citation.rcsb%5Fauthors:Lazar, G.A.), [Johnson, E.C.](/search?q=citation.rcsb%5Fauthors:Johnson, E.C.), [Desjarlais, J.R.](/search?q=citation.rcsb%5Fauthors:Desjarlais, J.R.), [Handel, T.M.](/search?q=citation.rcsb%5Fauthors:Handel, T.M.)
(1999) Protein Sci 8: 2598-2610
PubMed Abstract:
We present direct evidence for a change in protein structural specificity due to hydrophobic core packing. High resolution structural analysis of a designed core variant of ubiquitin reveals that the protein is in slow exchange between two conformations. Examination of side-chain rotamers indicates that this dynamic response and the lower stability of the protein are coupled to greater strain and mobility in the core. The results suggest that manipulating the level of side-chain strain may be one way of fine tuning the stability and specificity of proteins.
Organizational Affiliation:
Department of Molecular and Cell Biology, University of California, Berkeley 94720, USA.
Macromolecule Content
- Total Structure Weight: 8.58 kDa
- Atom Count: 602
- Modelled Residue Count: 76
- Deposited Residue Count: 76
- Unique protein chains: 1
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(by identity cutoff) | 3D Structure
Experimental Data & Validation
Experimental Data
- Method: SOLUTION NMR
- Conformers Calculated: 30
- Conformers Submitted: 20
- Selection Criteria: structures with the lowest energy
Revision History (Full details and data files)
- Version 1.0: 1999-08-20
Type: Initial release - Version 1.1: 2008-04-27
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 1.3: 2018-03-14
Changes: Database references, Derived calculations - Version 1.4: 2024-04-10
Changes: Data collection, Database references