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Volume 62, Issue 4


Engineering two mutants of cDNA-encoding G2 subunit of soybean glycinin capable of self-assembly in vitro and rich in methionine

Reda Sammour
Published Online: 2007-08-01 | DOI: https://doi.org/10.2478/s11756-007-0097-1


The main goal of this work was to make the cDNA-encoding subunit G2 of soybean glycinin, capable of self-assembly in vitro and rich in methionine residues. Two mutants (pSP65/G4SacG2 and pSP65/G4SacG2HG4) were therefore constructed. The constructed mutants were successfully assembled in vitro into oligomers similar to those occurred in the seed. The successful self-assembly was due to the introduction of Sac fragment of Gy4 (the codons of the first 21 amino acid residues), which reported to be the key element in self-assembly into trimers. The mutant pSP65/G4SacG2HG4 included the acidic chain of Gy4 (HG4), which was previously molecularly modified to have three methionine residues. This mutant will be useful in the efforts to improve the seed quality.

Keywords: soybean; Gy2; glycinin; self-assembly; G2 subunit

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About the article

Published Online: 2007-08-01

Published in Print: 2007-08-01

Citation Information: Biologia, Volume 62, Issue 4, Pages 394–399, ISSN (Online) 1336-9563, ISSN (Print) 0006-3088, DOI: https://doi.org/10.2478/s11756-007-0097-1.

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© 2007 Institute of Molecular Biology, Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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