David Goodsell says, These illustrations are provided for general use in oral presentations and classes. Please acknowledge me when you use the illustrations.
This illustration shows a cross-section of a small portion of an Escherichia coli cell.
These illustrations are also available for publication in print or on the internet. Please include an acknowledgement such as: "Illustration by David S. Goodsell, the Scripps Research Institute."
All of the illustrations presented through the Molecule of the Month are also available for public use. High quality versions are available. page 
Molecule of the Month illustrations are available under a CC-BY-4.0 license. Attribution should be given to David S. Goodsell and the RCSB PDB. Molecule of the Month articles are copyrighted by the RCSB PDB and the authors of the article. Text can only be reprinted with permission, with attribution, and without the right to manipulate or change its content. To request permission, please contact info@rcsb.org.
RCSB PDB Molecule of the Month articles may be referenced using a Digital Object Identifier (DOI) with format: 10.2210/rcsb_pdb/mom_YYYY_MM, where YYYY should be replaced with the year, and MM with the number of the month (one or two digits).
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Nice pictures. But does David really want me to use them?