© 1994 Heron Publishing—Victoria, Canada
2S Arginine-rich proteins from Pinus pinaster seeds
I. Allona, C. Collada, R. Casado and C. Aragoncillo
Departamento de Bioquímica, E.T.S. Ingenieros de Montes, Ciudad Universitaria, Madrid 28040, Spain / Received May 26, 1993
Summary
Low molecular weight globulins, which are abundant proteins in the Pinus pinaster Ait. megagametophyte, were purified and characterized. They showed a dimeric structure formed of one large and one small
subunit linked by disulfide bridges. They were characterized by a high Arg and Glx content and by a relatively high Cys content.
A comparison of their characteristics with those of angiosperm 2S proteins suggests that there is homology between them.
Keywords:
2S proteins, seed globulins, storage proteins.
