ibclogo XVI International Botanical Congess

Abstract Number: 2190
Poster No. = 2209


CHARACTERIZATIONS OF THE SIX SOYBEAN SEED GROUP 3 LATE EMBRYOGENESIS ABUNDANT (LEA) PROTEINS


Ter-yun Lin, Tao-yi Lin, Teh-yuan Chow, Su-mei Liu, Min-der Shih and Yue-ie C. Hsing*. Institute of Botany, Academia Sinica, Taipei, 115, Taiwan


We have selected several cDNA clones of soybean seed maturation proteins. These are designated GmPM clones, denoting for Glycine max physiologically mature. These proteins are also know as LEA proteins. Six of them belong to the group 3 LEA proteins. Like all this kind of proteins, there are tandemly-repeating 11-mers. The longest one consist of 32 11-mers and the shortest one consist of 5 11-mers. These proteins are highly hydrophilic, contain large amounts of charged residues, i.e. D, E, K and R, and small residues, i.e. A and G, and contain no C or W residues. pGmPM2 or pGmPM8 has been expressed in transgenic plants and their biological functions are studied. We get one of these proteins crystallized and the structure study is on the way.

HTML-Version made 7. July 1999 by Kurt Stüber