Hemoglobin uses a change in shape to increase the efficiency of oxygen transport.
HEMOGLOBIN AND MYOGLOBIN BIOCHEMISTRY
Oxygen transport: association and dissociation & Factors that affect hemoglobin's saturation with O2
PDB-101: Learn: Videos
Hemoglobin: Structure, Function and Allostery. - Abstract - Europe PMC
PDB-101: Geis Archive: Hemoglobin (1000)
Getting Oxygen: Myoglobin vs. Hemoglobin
PDB-101: Learn: Videos
PDB-101: Learn: Videos
Hemoglobin and Oxygen Binding MCAT tutorial series
Binding of oxygen to haemoglobin
Understanding Hemoglobin Structure and Function: Exploring