A preliminary X-ray study of murine Tnfaip8/Oxi-α

Area of Science:

• Neuroscience
• Structural Biology
• Biochemistry

Background:

• Tnfaip8/oxidative stress regulated gene-alpha (Oxi-α) is a novel protein.
• It is specifically expressed in brain dopaminergic neurons.
• Over-expression of Oxi-α protects dopaminergic cells against oxidative stress (OS)-induced cell death.

Purpose of the Study:

• To crystallize a murine C165S mutant of Tnfaip8/Oxi-α.
• To collect X-ray diffraction data for structural determination.
• To gain insights into the structure-function relationships of Oxi-α.

Main Methods:

• Protein crystallization of murine C165S mutant Tnfaip8/Oxi-α.
• X-ray diffraction data collection using synchrotron radiation to 1.8 Å resolution.
• Identification of primitive orthorhombic space group P21212 and unit-cell parameters.

Main Results:

• Successful crystallization of the C165S mutant Tnfaip8/Oxi-α.
• X-ray data collected to 1.8 Å resolution.
• Crystal belongs to space group P21212 with specific unit-cell parameters (a=66.9, b=72.3, c=93.5 Å).

Conclusions:

• The structural determination of Tnfaip8/Oxi-α is underway.
• This structural information will elucidate the protein's protective mechanisms against oxidative stress.
• Understanding Oxi-α structure is crucial for dopaminergic neuron protection research.