Crystallization and preliminary X-ray diffraction studies of soybean agglutinin

Area of Science:

• Biochemistry
• Structural Biology
• Crystallography

Background:

• Soybean agglutinin (SBA) is a lectin with potential applications in diagnostics and therapeutics.
• Understanding the three-dimensional structure of SBA is crucial for elucidating its function and interactions.

Purpose of the Study:

• To determine the crystal structure of soybean agglutinin.
• To characterize the crystallization properties of SBA for high-resolution structural studies.

Main Methods:

• X-ray diffraction analysis was performed on soybean agglutinin crystals.
• Unit cell dimensions and space group were determined.

Main Results:

• Soybean agglutinin crystallizes in the monoclinic space group C2.
• The unit cell parameters are a = 118.6 A, b = 88.9 A, c = 165.9 A, with a beta angle of 103.0 degrees.
• One tetramer of 120,000 Mr is present per asymmetric unit.

Conclusions:

• The determined crystal structure provides a foundation for further structural and functional investigations of soybean agglutinin.
• The suitability of the crystals for high-resolution work opens avenues for detailed atomic-level studies.