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. Author manuscript; available in PMC: 2013 Jan 11.
Published in final edited form as: J Am Chem Soc. 2011 Dec 15;134(1):130–133. doi: 10.1021/ja209533x

Figure 1.

Figure 1

Phycocyanobilin (PCB) chromophore and NpR6012g4’s photochemistry. Pr is the dark-stable state with 15Z conformation, which isomerizes via C15,16-double bond to the higher energy 15E conformer Pg that can convert back to Pr photochemically or thermally.