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![](https://lemmy.world/pictrs/image/0943eca5-c4c2-4d65-acc2-7e220598f99e.png)
For example, here’s a protein called “myoglobin”, that carries oxygen within your blood:
Myoglobin is in the muscles. Hemogoblin is in the blood and is essentially 4 myoglobin molecules that can combine into one hemoglobin. IIRC, the combination of the 4 makes it easier to switch between accepting and donating oxygen, where myoglobin is better just at the taking oxygen.
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