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. Author manuscript; available in PMC: 2020 Jul 20.
Published in final edited form as: Subcell Biochem. 2020;94:345–382. doi: 10.1007/978-3-030-41769-7_14

Fig. 14.8.

Fig. 14.8

Binding of S1P (purple) on the surface of deoxygenated Hb. The α-subunits are colored in gray and the β-subunits are colored in tan. Note that S1P only binds to the surface of the protein when 2,3-BPG binds to the β-cleft