BRAINCAKEMyoglobin
Myoglobin is an oxygen-binding protein found in muscle cells, particularly in skeletal and heart muscle. It gives red muscle its dark colour.
Its structure differs from haemoglobin:
• it is a single polypeptide chain with a tertiary structure, not a quaternary structure
• it has one haem group, so each molecule binds only one oxygen molecule
• because there is only one binding site, there is no cooperative binding
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More in Circulatory Systems
- Haemoglobin and Oxygen Transport
- Oxygen Dissociation Curve for Haemoglobin
- The Bohr Effect
- Fetal Haemoglobin
- Transport of Carbon Dioxide
- Blood Clotting
- The Blood Clotting Cascade
- Blood Vessels
All 33 lessons in Circulatory Systems · All Edexcel AS-level Biology topics