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. Author manuscript; available in PMC: 2020 Jul 23.
Published in final edited form as: Q Rev Biophys. 2019 Aug 19;52:e8. doi: 10.1017/S0033583519000064

Fig. 3.

Fig. 3.

Structure of two fluorescence activating proteins bound to biliverdin. (a) Cartoon representation of the infrared fluorescent protein IFP 2.0 (PDB ID: 4CQH). The biliverdin chromophore (green sticks) is shown with the covalent linkage to cystine 24 (yellow). (b) Cartoon representation of smURFP (PDB ID: 6FZN). The biliverdin chromophore (green sticks) is shown with the covalent linkage to cystine 52 (yellow sticks).