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A computer-based protocol for semiautomated assignments and 3D structure determination of proteins.
Meadows RP, Olejniczak ET, Fesik SW
(1994) J Biomol NMR 4: 79-96
MeSH Terms: Algorithms, Amino Acid Sequence, Automation, Carrier Proteins, Cell Line, Computer Graphics, Dipeptides, Heat-Shock Proteins, Humans, Magnetic Resonance Spectroscopy, Models, Molecular, Molecular Sequence Data, Protein Conformation, Tacrolimus, Tacrolimus Binding Proteins
Show Abstract · Added March 5, 2014
A strategy is presented for the semiautomated assignment and 3D structure determination of proteins from heteronuclear multidimensional Nuclear Magnetic Resonance (NMR) data. This approach involves the computer-based assignment of the NMR signals, identification of distance restraints from nuclear Overhauser effects, and generation of 3D structures by using the NMR-derived restraints. The protocol is described in detail and illustrated on a resonance assignment and structure determination of the FK506 binding protein (FKBP, 107 amino acids) complexed to the immunosuppressant, ascomycin. The 3D structures produced from this automated protocol attained backbone and heavy atom rmsd of 1.17 and 1.69 A, respectively. Although more highly resolved structures of the complex have been obtained by standard interpretation of NMR data (Meadows et al. (1993) Biochemistry, 32, 754-765), the structures generated with this automated protocol required minimal manual intervention during the spectral assignment and 3D structure calculations stages. Thus, the protocol may yield an approximate order of magnitude reduction in the time required for the generation of 3D structures of proteins from NMR data.
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