Strains from four different DNA relatedness groups of Bacillus circulans showed apparent alginate lyase activity; the activity of three strains examined had mannuronidase specificity. A representative strain of group 4 also produced apparent inducible unsulfated chrondroitin lyase activity.

In this lecture, we will construct constant degree D vertex-expanders with expansion of (1 − ε)D (a.k.a. constant degree lossless expanders). This beautiful construction is due to Capalbo-ReingoldVadhan-Wigderson. Concretely, for every constant ε > 0 and every N , we will construct a bipartite graph (L,R,E), |L| = N , |R| = M = poly(ε)N), with left degree D = poly(1ε ), such that every subset S...

We propose the Lie-algebraic interpretation of poly-analytic functions in $$L_2({{\mathbb {C}}},d\mu )$$ , with Gaussian measure $$d\mu $$ based on a flag structure formed by representation spaces $$\mathfrak {sl}(2)$$ -algebra realized differential operators z and $${\bar{z}}$$ . Following pattern one-dimensional situation, we define poly-Fock d complex variables way, as invariant for action g...

The conformation of the synthetic DNA, poly-[d(A-T)-d(A-T)], has been investigated both in the solid state and in dilute aqueous solutions at different temperatures below its melting point. The change of the circular dichroism (CD) spectra of poly[d(A-T)-d(A-T)] solutions with decreasing temperatures from just below the melting point to 0 degrees involves a specific decrease of the intensity of...

A 90-base-pair tract of a simple sequence composed of alternating guanosine and thymidine nucleotide residues (poly[d(GT) . d(CA)]) was inserted into the simian virus 40 genome at nucleotide 2666 (0.17 map units). The poly[d(GT) . d(CA)] insertion was stably maintained in the viral genome, but the variant virus grew more slowly than simian virus 40.

On the basis of circular dichroism (CD) data, we have now identified six different conformational states (other than the duplex) of poly[d(A-G).d(C-T)] at pH values between 8 and 2.5 (at 0.01M Na+; 20 degrees C). Three of these structural rearrangements were observed as the pH was lowered from 8 to 2.5, and three additional rearrangements were observed as the pH was raised from 2.5 back to neut...