RCSB PDB - 2MI8: Solution structure of lysine-free (K0) ubiquitin (original) (raw)
2MI8 | pdb_00002mi8
Solution structure of lysine-free (K0) ubiquitin
This is version 1.3 of the entry. See complete history.
Solution structure of lysine-free (K0) ubiquitin.
[Huang, T.](/search?q=citation.rcsb%5Fauthors:Huang, T.), [Li, J.](/search?q=citation.rcsb%5Fauthors:Li, J.), [Byrd, R.A.](/search?q=citation.rcsb%5Fauthors:Byrd, R.A.)
(2014) Protein Sci 23: 662-667
PubMed Abstract:
Lysine-free ubiquitin (K0-Ub) is commonly used to study the ubiquitin-signaling pathway, where it is assumed to have the same structure and function as wild-type ubiquitin (wt-Ub). However, the K0-Ub (15) N heteronuclear single quantum correlation NMR spectrum differs significantly from wt-Ub and the melting temperature is depressed by 19°C, raising the question of the structural integrity and equivalence to wt-Ub. The three-dimensional structure of K0-Ub was determined by solution NMR, using chemical shift and residual dipolar coupling data. K0-Ub adopts the same backbone structure as wt-Ub, and all significant chemical shifts can be related to interactions impacted by the K to R mutations.
Organizational Affiliation:
Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland, 21702.
Macromolecule Content
- Total Structure Weight: 8.77 kDa
- Atom Count: 616
- Modelled Residue Count: 76
- Deposited Residue Count: 76
- Unique protein chains: 1
Find similar proteins by:
(by identity cutoff) | 3D Structure
Experimental Data & Validation
Experimental Data
- Method: SOLUTION NMR
- Conformers Calculated: 10000
- Conformers Submitted: 20
- Selection Criteria: structures with the lowest energy
Revision History (Full details and data files)
- Version 1.0: 2014-04-02
Type: Initial release - Version 1.1: 2014-05-07
Changes: Database references - Version 1.2: 2023-06-14
Changes: Data collection, Database references, Other - Version 1.3: 2024-05-15
Changes: Data collection, Database references