Question: Crocodile hemoglobin does not bind 2, 3-BPG. Instead, it binds bicarbonate ion, which is a strong negative allosteric effector. Why might crocodiles have a hemoglobin

Crocodile hemoglobin does not bind 2, 3-BPG. Instead, it binds bicarbonate ion, which is a strong negative allosteric effector. Why might crocodiles have a hemoglobin that is responsive to HCO3- instead of 2, 3-BPG? Recall that crocodiles hold their prey underwater to kill them.

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