[Isolation and purification of Lpm and alpha-2 M macroglobulins from mink serum].

A procedure for large-scale separation and purification of two mink serum macroglobulins, Lpm and alpha 2M, is described. Individual preparations of each of these macroglobulins were obtained in an immunologically pure state. After precipitation from the serum at 6.

[On the role of N7 atoms of guanosine in tRNA-Phe (E. coli) in interaction with ribosomes].

The influence of alkylation of phe-tRNAPhe (E. coli) with 2',3'-O-[4-(N-2-chloroethyl-N-methylamino)-benzylidene]-uridine - 5' - methylphosphate on its ability to participate in non-enzymatic complex formation with ribosomes and poly-U was investigated. Phe-tRNAsPhe, containing alkylated guanosines at different positions, including anticodone, are active in binding with ribosomes.