What does the yellow mean in this image of a SARS (coronavirus) protease from the Virus Pathogen resource database? It's from https://www.viprbrc.org/brc/
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Sulfur atoms are shown in yellow.
The molecular viewer that you use is JSMol (JMol ported to the web).
Atoms are colored by element: grey C, blue N, red O and yellow S.
If you wonder how other atoms would be colored, see JMol's Default element colors, by periodic table.
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$\begingroup$ Here's the direct link: viprbrc.org/brc/… $\endgroup$– AndyCommented Mar 9, 2020 at 11:21
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$\begingroup$ Another question I had was this: bioinformatics.stackexchange.com/questions/11612/… Thanks $\endgroup$– AndyCommented Mar 9, 2020 at 11:54
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1$\begingroup$ Looks like they're using the common CPK method of colouring, it's not unique for J(S)Mol. $\endgroup$– MastCommented Mar 9, 2020 at 12:07