On Earth, sulfur is usually found in sulfide minerals, where an atom with a positive charge binds with one or more negatively charged sulfur atoms. Examples include chalcocite (copper sulfide ...

Remarkably, the dissociation resulted in the formation of a neutral but excited sulfur atom, even though multiple electrons were ejected during the cascade. This phenomenon is at first surprising ...

Surprisingly, the biosynthesis of this simple derivative requires a minimum of four sulfur transfer reactions involving seven proteins. To identify genes required for tRNA modification ...

Iron is an element. It is made of only one type of atom: iron atoms. Sulfur is another element. It contains only sulfur atoms, and nothing else, so it is pure. When we mix two different pure ...