![]() The package produces very good results for protein molecules of reasonable sizes, both in terms of graphics quality and speed of operations, on an 80486 IBM PC-compatible machine equipped with a 1 MByte VGA display card and a colour VGA monitor, which is a recommended configuration. CONVERT is a file converter, which is capable of converting files of atom coordinates of literally any format to Brookhaven Data Bank format files. RIBBON creates ribbon models of proteins and allows for a limited variety of interactive manipulations. Three types of models can be implemented to display molecules on the computer screen or the plotter: skeletal, solid space-filling and wireframe space-filling models. The OpenGL graphics system calls back display() in response to a window-paint request. All manipulations can be made with the use of an ordinary mouse, by choosing from a variety of pull-down menus. The function display() is meant to be the handler for window-paint event. ![]() SPHERE provides for an interactive manipulation of structures containing up to 2700 atoms which can belong up to six different molecules. CREATE includes commands to create or alter ('mutate') the primary and subsequently the tertiary structure of a given peptide or protein by defining phi and psi angles of residues at will, options to add, delete or alter atoms in a structure, utilities to choose easily between the most common rotamers of amino acid residue sidechains and options to analyse in various ways a protein conformation. ![]() It consists of four modules: CREATE, SPHERE, RIBBON and CONVERT. ![]() The PBM package was developed to create, display and conveniently manipulate protein and small molecule structures on IBM-compatible microcomputers. ![]()
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