Dixon

Balint-Kurti G G, Dixon R N and Marston C C 1992 Grid methods for solving the Schrodinger equation and time-dependent quantum dynamics of molecular photofragmentation and reactive scattering processes/of. Rev. Phys. Chem. 11 317—44... 

Zhang, Z.-Y., Dixon, J. E. Active site labeling of the yersinia protein tyrosine phosphatase The determination of the pKa of active site cysteine and the function of the conserved histidine 402. Biochem. 32 (1993) 9340-9345. 

The concept of feature trees as molecular descriptors was introduced by Rarey and Dixon [12]. A similarity value for two molecules can be calculated, based on molecular profiles and a rough mapping. In this section only the basic concepts are described. More detailed information is available in Ref. [12]. 

A molecule is represented by a tree which Rarey and Dixon called a feature tree, within which the nodes are fragments of the molecule. The atoms belonging to one node are connected in the molecular graph. A node consists at least of one atom. 

Blaney J M and J. S Dixon 1994. Distance Geometry in Molecular Modeling, In Lipkowitz K B and D E Boyd (Editors) Reviews in Computational Chemistry Volume 5. New York, VCH Publishers, pp. 299-335. 

J M and J S Dixon 1993. A Good Ligand Is Hard to Find Automated Docking Methods. spectives in Drug Discovery and Design 1 301-319. 

Desjarlais R L, R P Sheridan, G L Seibel, J S Dixon, ID Kuntz and R Venkataraghavan 1988. Using Shap Complementarity as an Initial Screen in Designing Ligands for a Receptor Binding Site of Know Three-Dimensional Structure. Journal of Medicinal Chemistry 31 722-729. 

B and W J Howe 1991. Computer Design of Bioactive Molecules - A Method for Receptor-Based Novo Ligand Design. Proteins Structure, Function and Genetics 11 314-328. i H L 1965. The Generation of a Unique Machine Description for Chemical Structures - A hnique Developed at Chemical Abstracts Service. Journal of Chemical Documentation 5 107-113. J 1995. Computer-aided Estimation of Symthetic Accessibility. PhD thesis. University of Leeds, itan R, N Bauman, J S Dixon and R Venkataraghavan 1987. Topological Torsion A New )lecular Descriptor for SAR Applications. Comparison with Other Descriptors. Journal of emical Information and Computer Science 27 82-85. 

C M, 1D Kuntz and J S Dixon 1995. Flexible Ligand Docking Using a Genetic Algorithm. Journal Zomputer-Aided Molecular Design 9 113-130. 

Sheridan R P, R Ndakantan, J S Dixon and R Venkataraghavan 1986. The Ensemble Approach to Distanc Geometry Application to the Nicotinic Pharmacophore. Journal of Medicinal Chemistry 29 899-906. 

Enzymes may be described a organic catalysts of biological origin. The majority are obtained from the interior of cells, but some are obtained from natural secretions such as the digestive juices and milk. For a full discussion of the nature of enzymes and the mechanism of their reactions the student should consult a work such as Chemistry and Methods of Enzymes, by J. B. Sumner and G. F. Somers (Academic Press, New York), or Enzymes, by M. Dixon and E. C. Webb[(Longman Group Ltd.). The following points should however be noted ... 

An excellent but expensive packing for columns consists of Dixon gauze rings. They are small gauze rings of Lessing shape made of Staybrite (stainless steel) gauze. A useful size is X 5 one pound of these occupies about 750 ml. 

Caulcutt, R., and R. Boddy, Statistics for Analytical Chemists, Chapman and Hall, London, 1983. Dixon, W. J., and F. J. Massey, Introduction to Statistical Analysis, McGraw-Hill, New York, 1969. 

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