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. Author manuscript; available in PMC: 2022 Jan 15.
Published in final edited form as: Chembiochem. 2020 Aug 28;22(2):288–297. doi: 10.1002/cbic.202000376

Figure 3. The chromophore binding site in photoactive yellow protein (PYP).

Figure 3.

A) A schematic of the PYP chromophore (pCA) binding site with the two types of SHBs indicated. R groups indicate continuation of the protein chain. B) The neutron crystal structure of the PYP chromophore active site with the two types of SHBs indicated.