Related Experiment Videos
Crystallization and preliminary X-ray diffraction analysis of nuclear transport factor 2
H M Kent1, W D Clarkson, T L Bullock
1MRC Laboratory of Molecular Biology, Cambridge, England.
Journal of Structural Biology
|March 1, 1996
Summary
Researchers cloned and expressed rat nuclear transport factor 2 (NTF2) in bacteria. This NTF2 was crystallized for high-resolution X-ray diffraction, revealing its dimeric structure.
Area of Science:
- Molecular Biology
- Structural Biology
- Biochemistry
Background:
- Nuclear transport factor 2 (NTF2) is crucial for protein import into the nucleus.
- Understanding NTF2 structure is key to elucidating nuclear import mechanisms.
Purpose of the Study:
- To clone and express rat NTF2 in a bacterial system.
- To obtain high-resolution structural data of NTF2 through X-ray crystallography.
Main Methods:
- Gene cloning and expression of rat NTF2 in Escherichia coli.
- Crystallization of bacterially expressed NTF2.
- X-ray diffraction analysis of NTF2 crystals.
Main Results:
- Successfully cloned and expressed functional rat NTF2.
- Produced orthorhombic NTF2 crystals (P212121 symmetry, unit cell dimensions a=55.9 Å, b=56.7 Å, c=88.3 Å).
- Crystals diffracted X-rays to better than 2 Å resolution, confirming the dimeric NTF2 structure in the asymmetric unit.
Conclusions:
- Bacterial expression provides a viable source for NTF2 structural studies.
- The determined crystal structure is consistent with the known dimeric nature of NTF2.
- High-resolution structural data will aid in understanding NTF2's role in nuclear transport.