The propeptide form of the lectin from the garden pea (Pisum sativum agglutinin) has been expressed in Escherichia coli by attaching its cDNA to an inducible promoter. By a number of criteria, including the ability to form dimers, hemagglutination titer, Western blot, and enzyme-linked immunosorbent assay, the resulting propeptide molecule is virtually indistinguishable from the mature proteolytically processed lectin isolated from peas ...
The propeptide form of the lectin from the garden pea (Pisum sativum agglutinin) has been expressed in Escherichia coli by attaching its cDNA to an inducible promoter. By a number of criteria, including the ability to form dimers, hemagglutination titer, Western blot, and enzyme-linked immunosorbent assay, the resulting propeptide molecule is virtually indistinguishable from the mature proteolytically processed lectin isolated from peas. Preliminary crystallization experiments using the recombinant propeptide lectin yield crystals in space group P2(1)2(1)2(1) with a = 64.8 A, b = 73.8 A, and c = 109.0 A (1 A = 0.1 nm) that diffract to 2.8-A resolution. This unit cell size is quite similar to the unit cell determined for native pea lectin, suggesting that the overall structure of the recombinant prolectin is virtually identical.
Related Citations:
The Crystal Structure of Pea Lectin at 3.0-Angstroms Resolution Einspahr, H., Parks, E.H., Suguna, K., Subramanian, E., Suddath, F.L. (1986) J Biol Chem 261: 16518
The Location of Manganese and Calcium Ion Cofactors in Pea Lectin Crystals by Use of Anomalous Dispersion and Tuneable Synchrotron X-Radiation Einspahr, H., Suguna, K., Suddath, F.L., Ellis, G., Helliwell, J.R., Papiz, M.Z. (1985) Acta Crystallogr B 41: 336
The Crystal Structure of Pea Lectin at 6-Angstroms Resolution Meehanjunior, E.J., Mcduffie, J., Einspahr, H., Bugg, C.E., Suddath, F.L. (1982) J Biol Chem 257: 13278
Organizational Affiliation:
Department of Biochemistry, School of Medicine, University of Alabama, Birmingham 35294.
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