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MacMolecule 1

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[www].se [ftp].se [mirror].us
MacMolecule_1.7.sit (191.60 KB)
MD5: daca2d926b2d95e379dfc188579353bc
For System 6.x - Mac OS 9
Emulation
Guides on emulating older applications

MacMolecule is a program designed for creating 3D-images of molecules for use in teaching molecular structure to students of biology, chemistry, and allied fields.

Molecules have defined structures, determined by the types and numbers of atoms in the molecule, the size of the atoms, the orientation of the atoms in 3-dimensional space, and the covalent and non-covalent bonding between atoms. The structure of many molecules have been solved by X- ray crystallography. Databases have been established as repositories of known structures.

All students of biology and chemistry study molecular structure. In beginning biology courses, we begin with discussions of the structure of small biological molecules such as amino acids, lipids, nucleotides, sterols, sugars, and vitamins. This is followed by analysis of the structure of larger molecules, particularly proteins, DNA and RNA. Almost all chemistry and biology textbooks illustrate relevant chapters with molecular structure diagrams and space-filling models. Biochemistry texts include images of protein secondary structure features, including the alpha-helix, beta-sheet, and collagen helix. Protein and enzyme structure is illustrated with molecules like myoglobin, ferredoxin, or lysozyme. Molecular biology and genetics lessons begin with a consideration of the Watson-Crick structure for the DNA double helix. The problem with a textbook-based approach for students is the difficulty in learning 3-dimensional concepts. Students are limited to a single 2D-molecular perspective. Color usage to distinguish different atoms is often minimal, and relatively few molecules are illustrated due to publishing costs. The instructor in the classroom often must teach molecular structure by drawing on the chalkboard or using black and white overhead transparencies.

With MacMolecule 1.5/1.7, instructors and students can use data from molecular structure databases, and create color 3D-space models of the small and large molecules on the computer screen in one of three user-selectable formats, space-filling, ball-and-stick, and wire frame. Learning is self-paced and participatory. Users can use pre-existing image data files or create their own molecular models by writing simple ASCII files with data on atomic coordinates and identification of covalent bonds. Users are then able to interactively rotate the image in the X, Y, and Z coordinates on the computer screen. "What-if" questions are possible, since data files can be user modified with a text editor. Rotating the molecule on the screen is either via mouse movement, or automated by defined steps in the X, Y, and Z coordinates via a dialog box. With automated molecule movement, the images can be saved to disk as a sequence of PICS images that can be re-played from MacMolecule 1.7 as an animation sequence, or exported to run in other programs. The ability to create and play back animations of molecules rotating in 3-space is currently built into the software. Animated sequences created in MacMolecule 1.7 can now be converted to QuickTime files for use in other Macintosh applications that support the QuickTime file format.

Review of MacMolecule 1.7
Chemistry tutorial using MacMolecule 1

The download is MacMolecule 1.7.

See also: MacMolecule 2.

Compatibility
Architecture: 68k

Macintosh
68020 processor or higher (Macintosh SE/30, II, IIx, IIcx, IIci, or IIfx and Quadra)
FPU required
Macintosh System 6.05 or higher (32-bit Quickdraw required)

Comments

Kitchen2010's picture
by Kitchen2010 - 2015, August 18 - 4:14pm

I have added MacMolecule 1.7 from MacsRUS's archive.