This is a very good video a saw on Entagma :
https://entagma.com/guest-tutorial-dr-jeroen-claus-rendering-the-corona-virus-spike-protein/ [entagma.com]
They are using scientific data bank and make the visualization. Amazing !
Presented by : Dr. Jeroen Claus of Phospho, a biologist and expert in visualizing molecular structures.
I'll be following this post.
This is a subject of interest to me.
I am still at the beginning of learning Houdini, but improving and I love this software and his elegant interface.