In the present study membrane fatty acids were analyzed to find a link between the biosynthesis inhibition of very-long-chain fatty acids and the phytotoxic effects of herbicidal chloroacetamides. Accordingly, we have isolated membranes of cucumber seedlings (Cucumis sativus) by two-phase partitioning and analyzed their fatty acid content. Saturated VLCFAs ranging from C20 to C26 were found in ...

background: many in vitro studies suggested that choline incorporation into many types of tumors is related to cell proliferation. whether in vivo choline incorporation is related also to cell proliferation or not was my question. therefore, the aim of this pilot study was to investigate the relationship of in vivo [methyl- 14c]-choline incorporation and in vivo [methyl-3h]- thymidine incorpora...

In the title compound, [Co(C(3)H(2)O(4))(C(14)H(12)N(2))](n), the Co(II) ion is in a distorted octa-hedral coordination being chelated by a 2,9-dimethyl-1,10-phenanthroline mol-ecule (dmphen) and two carboxyl-ate groups of two malonate ligands The malonate ligand acts in a bridging mode, forming coordination chains along [100]. π-π stacking inter-actions between dmphen ligands [inter-planar dis...

The biosynthetic pathways involved in the formation of four everninomicin antibiotics were studied. Carbon-14 labelled substrates added to liquid cultures of Micromonospora carbonacea var. aurantiaca revealed that acetate, malonate and glucose were good precursors. Degradation of the antibiotics revealed the primary importance of acetate and malonate for the synthesis of the dichloroisoevernini...

An agar medium combining dulcitol fermentation, malonate utilization, and phenylalanine deamination was evaluated with 229 isolates representing 19 genera. All reactions agreed with those obtained on conventional media.

Both diastereomers of 2-C-branched carbohydrates with various functional groups are selectively available from the same malonate precursor in good yields in only a few steps.

Oxalate and malonate have been found to bind to the flavoenzyme, lactate oxidase, in a two-step equilibrium process. The dissociation constant for the first step is of the order of lo-” M, and is independent of pH. The second step equilibrium is on the other hand directly proportional to [H+I due to the second forward step, which is a second order reaction involving proton uptake. The reverse o...