Molecular Visualization Resources
all free and open source,
collected by Eric Martz
including all Martz-authored/coauthored resources.

Free, Interactive Tutorials & Tools in

Atlas of Macromolecules
FirstGlance in Jmol   •   Site Map
What's ?

Coronavirus Priming
Coronavirus SARS-CoV-2 spike protein is primed by the lung protease furin to bind to the host cell receptor ACE2.

Coronavirus Fusion
Coronavirus SARS-CoV-2 spike protein fuses the virus membrane with the host cell membrane, releasing the virus RNA into the cell to start infection.

Influenza & Tamiflu
Influenza neuraminidase is the target of the drugs Tamiflu and Relenza. Right: Relenza induces fit of the neuraminidase active site.

DNA Structure
An introductory level, nonlinear self-paced tutorial.

(Español - Português - Deutsch - français - others)

Ramachandran Principle: Phi/Psi Angles
Explanations with dynamic display of clashes during dihedral angle rotation. Quiz

An introductory presentation suitable for lectures or individual study. New: morphs of the R↔T transition, views of 2,3-diphosphoglycerate and polymerized sickle hemoglobin. Quiz

A narrated YouTube Video capturing this tutorial is available while the interactive tutorial awaits upgrading for Java-independence. Quiz.

Major Histo- compatibility Complex
The Major Histocompatibility Complex presents peptides from foreign proteins to T lymphocytes, crucial to disease immunity. A narrated YouTube Video capturing this tutorial is available while the interactive tutorial awaits upgrading for Java-independence. Quiz.

Lipid Bilayers and Membrane Channel
Introduces cholesterol and phospholipids, then proceeds to lipid bilayer and the gramicidin membrane channel embedded within the bilayer. Includes molecular dynamics simulations of both gel and fluid membrane states. By Eric Martz and Angel Herráez.


The indispensible and inextensible fibers that hold you together, by Karl Oberholser. Collagen at Wikipedia has external links to animations of collagen assembly.
Lac Repressor
See how the repressor protein recognizes the DNA sequence of the lactose operator.
See 10 water molecules condense into a hydrogen-bonded droplet. Also liquid water and ice. Includes challenge questions for students. By Eric Martz and Angel Herráez.
• Would you like to teach your students easy-to-use, state-of-the-art interactive 3D molecular visualization tools that they can expect to use for years to come?

• Would you like to use such tools yourself in your research?

Check out the
MolviZ Top 5!

Jmol Tutorials Elsewhere:

Other Jmol Resources:

Author Your Own Jmol Tutorials Easily at Proteopedia.Org! The Scene Authoring Tool there makes it easy to customize molecular views in Jmol. You don't need to learn any script, HTML, or other languages. Your descriptions and molecular scenes will be online immediately! See Comparisons. Periodic Table of the Elements
Van der Waals, uncharged, and ionic radii. Atoms sizes proportional to relative abundance in humans.


What is MolviZ.Org?

MolviZ.Org brings together molecular visualization resources that Eric Martz has authored, coauthored, or recommends. These include interactive tutorials, software for molecular exploration, an Atlas with images and descriptions of selected macromolecules, physical teaching props, and more.

Types of Resources at MolviZ.Org

Site Map: MolviZ.Org

     What is MolviZ.Org?
     Types of Resources at MolviZ.Org
     What's at MolviZ.Org?

Interactive Molecular Tutorial Collections
     Tutorials at MolviZ.Org
     Tutorials at Proteopedia, Biomodel, etc.
     The High School Biology Collection
     The Atlas of Macromolecules

Molecular Exploration Tools
     ConSurf Server: see evolutionary conservation.

Fantastic Teaching Props
     Toobers - Model Any Type of Polymer
     Physical Molecular Models
     Physical Model Lending Library (Western MA only)

Related Resources
     Publication-Quality Figures/Animated Slides Made Easy
     Molecular Sculpture
     A History of Visualization of Macromolecules
     Knots in Proteins
     Thermal Motion of An Alpha Helix

Interactive Molecular Tutorial Collections

Ready-To-Use Tutorials

High School Teachers' Resources

HighSchool.MolviZ.Org includes interactive molecules selected for high school curricula, alphabet traits fingerprinting, instructions for making DNA earrings, instructions for making molecules from balloons, and much more.

BioMolecular Explorer 3D (Jmol) is a collection of 3D-interactive, biologically significant molecules relevant to a high school biology curriculum. Designed by Frieda S. Reichsman, the site simplifies finding, preparing for, and using molecular visualization resources at the high school level. Includes:

  • Pre-selected molecules with descriptions to place them in context.
  • DNA, antibody, HIV protease with inhibitor, hemoglobin, lipid bilayers and channels, and more.
  • Introductions to structures of carbohydrates, lipids, vitamins, proteins and nucleic acids from BioModel by Angel Herráez.
  • Resources for lesson planning.
  • Both English and español versions of guided tutorials on DNA, carbohydrates, lipids/bilayers/channels, vitamins, proteins, and nucleic acids.

Atlas of Macromolecules

DNA Recombination (Holliday Junction). Drill for puncturing bacteria used by T4 virus. The Atlas of Macromolecules is extensively illustrated. Every entry in the Atlas can be displayed in FirstGlance in Jmol, and many in Proteopedia.

Updated in February, 2016, with animations of the ribosome, proteasome, hepatitis B virus capsid, and new sections on intrinsically disordered/natively unstructured proteins, NMR ensembles, and amyloids.

Organized by categories including enzymes, structural proteins, calcium-binding proteins, lipid bilayers, integral membrane proteins, myristoylated proteins, DNA, RNA, virus capsids, toxins, carbohydrates, magnificent molecular machines, unusual tertiary/quaternary structures, etc.

Molecular Exploration Tools

FirstGlance in Jmol ( or google FirstGlance (as one word, no space).

Presentation-ready animations can can be saved from FirstGlance. Here are Examples.

FirstGlance in Jmol ( gives you a guided tour of your molecule, simply by following menus and buttons, without learning any commands, and with nothing to install. It works immediately with all popular browsers and computer types including recent iPads and smart phones. It offers extensive help and examples, while minimizing the use of technical terms.

Molecules: You can specify the Protein Data Bank's 4-character code of an experimentally-determined structure (how to find it), upload a model predicted by AlphaFold, or upload your own model.

FirstGlance in Jmol offers numerous one-click preset views with adjacent color keys, makes it easy to hide portions of the molecule, find residues by sequence or name, show all protein disulfide bonds, salt bridges and cation-pi orbital interactions. Its Contacts.. dialog shows non-covalent bonds to any target moiety that you select by clicking, dividing them into seven categories that you can hide or display with checkboxes.

ConSurf output: Conservation of the catalytic pocket of enolase (4enl), an enzyme in glycolysis.

ConSurf Server (

See evolutionary conservation! Introduction to Evolutionary Conservation.

ConSurf makes it easy for you to identify functional regions of proteins. Each amino acid is colored by evolutionary conservation, thereby revealing conserved or highly variable patches. Results may be displayed in FirstGlance in Jmol or other viewers.

Given a 3D model or PDB code this user-friendly tool finds related protein sequences, performs multiple sequence alignments, constructs a phylogenetic tree, and assigns a conservation level to each amino acid, all automatically!

Optionally, you can select the sequences and upload your own multiple sequence alignment, which will be used by ConSurf's state-of-the-art algorithms, all of which are published in peer-reviewed journals.

Fantastic Teaching Props

Toobers in Science Education: Model Your Favorite Polymer

Toobers are inexpensive, easy to bend, foam-covered rods that hold the shapes you give them, over and over again!

They are very useful in illustrating macromolecular structure concepts. Great for all levels of science from K-12 to undergraduate. We feature several examples and also short movies to illustrate their use.

Physical Models of Molecules

Colorful, accurate models featuring embedded magnets to simulate hydrogen bonding, at varying prices—kits for water, for assembling DNA from nucleotides (image at right), and other molecules. Available for purchase from, or for borrowing from the Lending Libraries of 3D Molecular Designs or the Center for Biomolecular Modeling. For information on how high-precision models are made, see the Rapid Prototyping section of History of Visualization of Biological Macromolecules.

Related Resources

Animation made with Polyview-3D. Larger samples and more information...

Make Publication-Quality Molecular Images and Rotating Powerpoint Slides Easily!

FirstGlance in Jmol is the easiest way to make high quality images and presentation-ready animations. See Examples. However, FirstGlance does not support customization of colors and rendering in the molecular view. Also the images generated by Jmol in FirstGlance are not quite as high quality as those generated by PyMOL.

Polyview-3D generates its images and animations at truly publication quality using PyMOL. Furthermore, it supports full customization of the molecular view.

Giant model of the monomer of nylon from Miramodus.Com. (Photo used with permission.)

Molecular Sculpture

Molecular Sculpture by scientists, artists, and artist-scientists are highlighted in this collection.

Julian Voss-Andreae's Alpha Helix for Linus Pauling (photo used with permission). The 10-foot (3 m) sculpture was created to honor the memory of Linus Pauling, who discovered the alpha helix in 1951. The sculpture is located in front of Linus Pauling's boyhood home in Portland, Oregon.

History of Visualization of Biological Macromolecules

The History of Visualization of Biological Macromolecules answers questions such as What Were Fred's Folly and Byron's Bender? See early computer images, physical models including the latest by computer-driven laser-powered rapid-prototype engineering, and the latest molecular sculpture.

Knots in Proteins!

Are protein chains ever knotted? It's rare but it does happen—
get a good look at some Knots in Proteins!.

Alpha Helix Thermal Motion

Raul E. Cachau provided this Demonstration of Alpha Helix Thermal Motion as an example of a molecular dynamic simulation of thermal motion.

Visitors since June 19, 2002. Stats.

Click the count above for graphs of visiting rates, browsers, operating systems, etc.

Thanks to Frieda S. Reichsman (MoleculesInMotion.Com) for improving the organization and design of this site in 2005, and for subsequent insightful feedback.

Feedback to Eric Martz