Katre UV, Gaikwad SM, Bhagyawant SS, Deshpande UD, Khan MI, Suresh CG. Crystallization and preliminary X-ray characterization of a lectin from Cicer arietinum (chickpea).
Acta Crystallogr Sect F Struct Biol Cryst Commun 2005;
61:141-3. [PMID:
16508116 PMCID:
PMC1952404 DOI:
10.1107/s1744309104032166]
[Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2004] [Accepted: 12/06/2004] [Indexed: 11/10/2022]
Abstract
The lectin isolated from mature seeds of Cicer arietinum (CAL) agglutinates pronase-treated rabbit and human erythrocytes and its haemagglutination activity is inhibited by fetuin and desialated fetuin but not by simple monosaccharides or oligosaccharides. The purified lectin is a dimer of molecular weight 43,000 Da composed of two identical subunits (MW 21,500), as confirmed by SDS-PAGE. The lectin has been crystallized using the hanging-drop vapour-diffusion method at 295 K over a well solution containing 0.2 M sodium acetate, 0.1 M sodium phosphate buffer pH 6.5 and 14%(w/v) polyethylene glycol 8000. The triangular prism-shaped crystals belong to space group R3 and have unit-cell parameters a = b = 81.2, c = 69.4 A. The diffraction data are 93.8% complete to 2.3 A Bragg spacing with an Rmerge of 0.103.
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