Proline is an important component of salt-stress responses of plants. In this study the role of proline as part of salt-stress signalling in the desert plant Pancratium maritimum L. was examined. The data showed that salt-stress brought about a reduction of the growth and protein content, particularly at 300 mM NaCl, that was significantly increased by exogenous proline. In the leaves, salt-str...

1. More than one mode of transport can be observed for concentrative uptake of a-aminoisobutyric acid (AIB) by rat kidney cortex slices when the initial concentration of AIB in the medium is varied between 0.2 and 16 mM. 2. The relative contribution from both systems to the total observed uptake at various concentrations of AIB was calculated. The K, values for the two systems were 3.87 rnM and...

Active methylene compounds such as acetone, butanone, cyclopentanone, nitromethane, malononitrile, ethyl 2-cyanoacetate, diethyl malonate, and ethyl acetylacetate react with the C3 position of N-confused porphyrin in the presence of L-proline in refluxing THF-EtOH affording a variety of N-confused porphyrin derivatives in moderate yield. L-Proline catalyzes the reaction facilitating the formati...

1. More than one mode of transport can be observed for concentrative uptake of a-aminoisobutyric acid (AIB) by rat kidney cortex slices when the initial concentration of AIB in the medium is varied between 0.2 and 16 mM. 2. The relative contribution from both systems to the total observed uptake at various concentrations of AIB was calculated. The K, values for the two systems were 3.87 rnM and...