M|| Announcing Schulman Life Structures Sets of Courtauld Atomic Models. The Courtauld Atomic Models are uniquely suited for constructing various "life structures" including amino acids, peptide chains and alpha-helixes; and the nuclei structures, the purines and pyrimidines. Now in cooperation with Dr. Sidney Shulman, Associate Professor of Bio physics and Immunochemistry at the University of Buffalo, The Ealing Cor poration presents a series of five new Courtauld Atom model sets uniquely suited to the teaching of these structures. The Medical and Dental school at the University of Buffalo has equipped their laboratory with 50 of these sets, provid ing one per group of four students. Dr. Shulman's detailed instruction manual accompanies the sets. It pre sents for each of the 25 naturally occur ring amino acids the classical formula, the ionized form at pH 7, and the choice
of Courtauld atom for each position of the ionized form. The L configuration about the alpha carbon is used; instruc tions are given for the D configuration. The nucleic bases, nucleotides and re lated structures are also depicted in detail. The purines and pyrimidines are shown in both keto and enol forms. Instructions for hydrogen bonding of base pairs are given. A series of forty-five 2" X 2" color slides is being assembled showing all of the structures described in the manual. The slides are included in the larger sets as is an Angstrom caliper.
You can get the "feel" of Courtauld atoms with our $10 Basic Peptide Residue Set: 7 atoms, links, collars and spacers or our 85 Introductory Set: 4 assorted atoms, links, collars and spacers.
The principal differences among the sets lie in the number of things which can be built simultaneously. The sets are put up in sturdy boxes with the atoms organized in compartmented trays. As an aid in teaching, each set also contains offprints of several relevant articles by noted authors which have appeared in the Scientific American in recent years. A detailed list of contents of the vari ous sets and their capabilities is avail able. The color slides separately are $20.00: the Instruction Manual is $3.50. The sets range in price from $118. to $1250.
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